10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

T QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2013

OR

o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ______________ to ______________

Commission file number 001-34166

SunPower Corporation

(Exact Name of Registrant as Specified in Its Charter)

Delaware	94-3008969
(State or Other Jurisdiction of Incorporation or Organization)	(I.R.S. Employer Identification No.)

77 Rio Robles, San Jose, California 95134

(Address of Principal Executive Offices and Zip Code)

(408) 240-5500

(Registrant's Telephone Number, Including Area Code)

_________________________________________

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Sections 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes  T    No  o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes  T    No  o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer o	Accelerated filer x	Non-accelerated filer o	Smaller reporting company o
		(Do not check if a smaller reporting company)

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).  Yes  o    No  T

The total number of outstanding shares of the registrant’s common stock as of May 3, 2013 was 120,831,758.

d

TABLE OF CONTENTS
		Page
PART I. FINANCIAL INFORMATION		3
Item 1.	Financial Statements (unaudited)	3
	Condensed Consolidated Balance Sheets	3
	Condensed Consolidated Statements of Operations	4
	Condensed Consolidated Statements of Comprehensive Loss	5
	Condensed Consolidated Statements of Stockholders' Equity	6
	Condensed Consolidated Statements of Cash Flows	7
	Notes to Condensed Consolidated Financial Statements	8
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	42
Item 3.	Quantitative and Qualitative Disclosure About Market Risk	57
Item 4.	Controls and Procedures	59
PART II. OTHER INFORMATION		60
Item 1.	Legal Proceedings	60
Item 1A.	Risk Factors	60
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	60
Item 6.	Exhibits	61
Signatures		62
Index to Exhibits		63

2

PART I. FINANCIAL INFORMATION

ITEM 1. FINANCIAL STATEMENTS

SunPower Corporation

Condensed Consolidated Balance Sheets

(In thousands, except share data)

(unaudited)

	March 31, 2013			December 30, 2012
Assets
Current assets:
Cash and cash equivalents	$	505,587		$	457,487
Restricted cash and cash equivalents, current portion	11,061			15,568
Accounts receivable, net	303,009			398,150
Costs and estimated earnings in excess of billings	37,244			36,395
Inventories	281,367			291,386
Advances to suppliers, current portion	64,681			50,282
Project assets - plants and land, current portion	90,429			75,911
Prepaid expenses and other current assets (1)	432,337			613,053
Total current assets	1,725,715			1,938,232
Restricted cash and cash equivalents, net of current portion	18,106			31,396
Restricted long-term marketable securities	10,860			10,885
Property, plant and equipment, net	806,143			774,909
Project assets - plants and land, net of current portion	8,364			7,596
Other intangible assets, net	597			744
Advances to suppliers, net of current portion	291,043			301,123
Other long-term assets (1)	301,889			276,063
Total assets	$	3,162,717		$	3,340,948
Liabilities and Equity
Current liabilities:
Accounts payable (1)	$	333,684		$	414,335
Accrued liabilities	281,687			247,372
Billings in excess of costs and estimated earnings	222,853			225,550
Short-term debt	117,079			14,700
Customer advances, current portion (1)	70,127			59,648
Total current liabilities	1,025,430			961,605
Long-term debt	116,638			375,661
Convertible debt	442,710			438,629
Customer advances, net of current portion (1)	223,828			236,082
Other long-term liabilities	411,357			335,619
Total liabilities	2,219,963			2,347,596
Commitments and contingencies (Note 7)
Equity:
Preferred stock, $0.001 par value; 10,000,000 shares authorized; none issued and outstanding as of both March 31, 2013 and December 31, 2012	—			—
Common stock, $0.001 par value, 367,500,000 shares authorized; 125,804,792 shares issued, and 120,812,930 outstanding as of March 31, 2013; 123,315,990 shares issued, and 119,234,280 shares outstanding as of December 30, 2012	121			119
Additional paid-in capital	1,940,781			1,931,947
Accumulated deficit	(956,781		)	(902,085		)
Accumulated other comprehensive loss	(1,562		)	(2,521		)
Treasury stock, at cost; 4,991,862 shares of common stock as of March 31, 2013; 4,081,710 shares of common stock as of December 30, 2012	(44,847		)	(34,108		)
Total stockholders' equity	937,712			993,352
Noncontrolling interest in subsidiary	5,042			—
Total equity	942,754			993,352
Total liabilities and equity	$	3,162,717		$	3,340,948

(1) The Company has related party balances in connection with transactions made with unconsolidated entities in which the Company has a direct equity investment. These related party balances are recorded within the "Prepaid expenses and other current assets," "Other long-term assets," "Accounts payable," "Customer advances, current portion," and "Customer advances, net of current portion" financial statement line items in the Condensed Consolidated Balance Sheets (see Note 4, Note 7, and Note 8).

The accompanying notes are an integral part of these condensed consolidated financial statements.

3

SunPower Corporation

Condensed Consolidated Statements of Operations

(In thousands, except per share data)

(unaudited)

	Three Months Ended
	March 31, 2013			April 1, 2012
Revenue	$	635,433		$	494,131
Cost of revenue	576,120			448,883
Gross margin	59,313			45,248
Operating expenses:
Research and development	13,170			16,726
Sales, general and administrative	70,092			76,194
Restructuring charges	(337		)	3,046
Total operating expenses	82,925			95,966
Operating loss	(23,612		)	(50,718		)
Other income (expense), net:
Interest income	255			342
Interest expense	(27,034		)	(18,701		)
Other, net	(8,256		)	(672		)
Other income (expense), net	(35,035		)	(19,031		)
Loss before income taxes and equity in loss of unconsolidated investees	(58,647		)	(69,749		)
Provision for income taxes	(2,989		)	(1,356		)
Equity in loss of unconsolidated investees	(333		)	(3,425		)
Net loss	$	(61,969	)	$	(74,530	)
Net loss attributable to noncontrolling interest	7,273			—
Net loss attributable to stockholders	$	(54,696	)	$	(74,530	)
Net loss per share attributable to stockholders:
Basic and diluted	$	(0.46	)	$	(0.67	)
Weighted-average shares:
Basic and diluted	119,553			111,785

The accompanying notes are an integral part of these condensed consolidated financial statements.

4

SunPower Corporation

Condensed Consolidated Statements of Comprehensive Income (Loss)

(In thousands)

(unaudited)

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012
Net loss	$	(61,969	)	$	(74,530	)
Components of comprehensive loss:
Translation adjustment	(1,343		)	5,998
Net unrealized gain (loss) on derivatives (Note 10)	2,835			(5,750		)
Income taxes	(533		)	1,080
Net change in accumulated other comprehensive income (loss)	959			1,328
Total comprehensive loss	$	(61,010	)	$	(73,202	)
Comprehensive loss attributable to noncontrolling interest	7,273			—
Comprehensive loss attributable to stockholders	$	(53,737	)	$	(73,202	)

The accompanying notes are an integral part of these condensed consolidated financial statements.

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SunPower Corporation

Condensed Consolidated Statements of Stockholders' Equity

(In thousands, except share data)

(unaudited)

	Common Stock
	Shares		Value		Additional Paid-in Capital			Treasury Stock			Accumulated Other Comprehensive Income (Loss)			Retained Earnings (Accumulated Deficit)			Total Stockholders’ Equity			Noncontrolling Interest			Total Equity
Balances at December 30, 2012	119,234		$	119	$	1,931,947		$	(34,108	)	$	(2,521	)	$	(902,085	)	$	993,352		$	—		$	993,352
Net loss	—		—		—			—			—			(54,696		)	(54,696		)	(7,273		)	(61,969		)
Other comprehensive income	—		—		—			—			959			—			959			—			959
Issuance of common stock upon exercise of options	9		—		25			—			—			—			25			—			25
Issuance of restricted stock to employees, net of cancellations	2,480		2		(2		)	—			—			—			—			—			—
Stock-based compensation expense	—		—		8,811			—			—			—			8,811			—			8,811
Purchases of treasury stock	(910	)	—		—			(10,739		)	—			—			(10,739		)	—			(10,739		)
Contributions from noncontrolling interests	—		—		—			—			—			—			—			12,315			12,315
Balances at March 31, 2013	120,813		$	121	$	1,940,781		$	(44,847	)	$	(1,562	)	$	(956,781	)	$	937,712		$	5,042		$	942,754

The accompanying notes are an integral part of these condensed consolidated financial statements.

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SunPower Corporation

Condensed Consolidated Statements of Cash Flows

(In thousands)

(unaudited)

	Three Months Ended
	March 31, 2013			April 1, 2012 (1)
Cash flows from operating activities:
Net loss	$	(61,969	)	$	(74,530	)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Stock-based compensation	8,516			12,541
Depreciation	23,620			29,071
Amortization of other intangible assets	147			2,782
Gain on mark-to-market derivatives	—			(13		)
Non-cash interest expense	11,890			7,099
Amortization of debt issuance costs	1,094			1,019
Equity in loss of unconsolidated investees	333			3,425
Third-party inventories write-down	—			9,045
Deferred income taxes and other tax liabilities	4,724			(2,306		)
Changes in operating assets and liabilities, net of effect of acquisition:
Accounts receivable	60,340			87,672
Costs and estimated earnings in excess of billings	(849		)	2,784
Inventories	(5,606		)	(86,539		)
Project assets	(35,250		)	(39,027		)
Prepaid expenses and other assets	197,489			(67,498		)
Advances to suppliers	(4,319		)	(15,724		)
Accounts payable and other accrued liabilities	(28,825		)	9,140
Billings in excess of costs and estimated earnings	(2,697		)	(665		)
Customer advances	(1,775		)	1,016
Net cash provided by (used in) operating activities	166,863			(120,708		)
Cash flows from investing activities:
Decrease in restricted cash and cash equivalents	17,797			43,944
Purchase of property, plant and equipment	(12,042		)	(32,782		)
Cash paid for solar power systems, leased and to be leased	(41,688		)	(15,921		)
Proceeds from sale of equipment to third-party	11			416
Cash received for sale of investment in unconsolidated investees	—			17,403
Net cash provided by (used in) investing activities	(35,922		)	13,060
Cash flows from financing activities:
Proceeds from issuance of project loans, net of issuance costs	24,061			—
Proceeds from residential lease financing	39,090			—
Proceeds from sale-leaseback financing	33,850			—
Contributions from noncontrolling interest	12,315			—
Repayment of bank loans, project loans and other debt	(180,501		)	(100,592		)
Cash paid for repurchase of convertible debt	—			(198,608		)
Proceeds from private offering of common stock, net of issuance costs	—			163,681
Cash distributions to Parent in connection with the transfer of entities under common control	—			(178,290		)
Proceeds from exercise of stock options	25			8
Purchases of stock for tax withholding obligations on vested restricted stock	(10,739		)	(3,885		)
Net cash used in financing activities	(81,899		)	(317,686		)
Effect of exchange rate changes on cash and cash equivalents	(942		)	1,853
Net increase (decrease) in cash and cash equivalents	48,100			(423,481		)
Cash and cash equivalents at beginning of period	457,487			725,618
Cash and cash equivalents, end of period	$	505,587		$	302,137
Non-cash transactions:
Assignment of residential lease receivables to a third party financial institution	$	33,969		$	—
Property, plant and equipment acquisitions funded by liabilities	$	5,042		$	6,419
Costs of solar power systems, leased and to be leased, sourced from existing inventory	$	15,536		$	12,362
Costs of solar power systems, leased and to be leased, funded by liabilities	$	4,070		$	2,150
Costs of solar power systems under sale-leaseback financing arrangements, sourced by project assets	$	20,066		$	—
Non-cash interest expense capitalized and added to the cost of qualified assets	$	159		$	364
Issuance of warrants in connection with the Liquidity Support Agreement	$	—		$	50,327

(1) As adjusted to conform to the current period presentation for solar power systems leased and to be leased (see Note 1)

The accompanying notes are an integral part of these condensed consolidated financial statements.

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Note 1. THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

The Company

SunPower Corporation (together with its subsidiaries, the "Company" or "SunPower") is a vertically integrated solar products and solutions company that designs, manufactures and delivers high-performance solar systems worldwide, serving as a one-stop shop for residential, commercial, and utility-scale power plant customers.

The Company's President and Chief Executive Officer, as the chief operating decision maker ("CODM"), has organized the Company, manages resource allocations and measures performance of the Company's activities among three regional segments: (i) the Americas Segment, (ii) the EMEA Segment, and (iii) the APAC Segment. The Americas Segment includes both North and South America. The EMEA Segment includes European countries, as well as the Middle East and Africa. The APAC segment includes all Asia-Pacific countries.

On June 21, 2011, the Company became a majority owned subsidiary of Total Gas & Power USA, SAS("Total"), a subsidiary of Total S.A. ("Total S.A."), through a tender offer and Total's purchase of 60% of the outstanding former class A common stock and former class B common stock of the Company as of June 13, 2011. On January 31, 2012, Total purchased an additional 18.6 million shares of the Company's common stock in a private placement, thereby increasing Total's ownership to approximately 66% of the Company's outstanding common stock as of that date (see Note 2).

Basis of Presentation and Preparation

Principles of Consolidation

The condensed consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America ("United States" or "U.S.") and include the accounts of the Company, all of its subsidiaries and special purpose entities, as appropriate under consolidation accounting guidelines. Intercompany transactions and balances have been eliminated in consolidation. The assets of the special purpose entities that the Company sets up related to project financing for customers are not designed to be available to service the general liabilities and obligations of the Company in certain circumstances.

Reclassifications

Certain prior period balances have been reclassified to conform to the current period presentation in the Company's condensed consolidated financial statements and the accompanying notes. Such reclassifications had no effect on previously reported results of operations or retained earnings. As reflected in the Company's Annual Report on Form 10-K for the fiscal year ended December 30, 2012 ("2012 Form 10-K"), in connection with the growth of its residential lease program, during the fourth quarter of fiscal 2012 the Company began to separately classify both the cost of the leased assets and related investing cash flows based upon the nature of the lease entered into. The Company has reclassified prior period interim balances to conform to the current period presentation, which resulted in an increase in operating cash flows of $15.9 million for the three months ended April 1, 2012.

Fiscal Years

The Company has a 52-to-53-week fiscal year that ends on the Sunday closest to December 31. Accordingly, every fifth or sixth year will be a 53-week fiscal year. Both fiscal 2013 and 2012 are 52-week fiscal years. The first quarter of fiscal 2013 ended on March 31, 2013, while the first quarter of fiscal 2012 ended on April 1, 2012. Both the first quarter of fiscal 2013 and fiscal 2012 were 13-week quarters.

Management Estimates

The preparation of the condensed consolidated financial statements in conformity with U.S. generally accepted accounting principles ("U.S. GAAP") requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Significant estimates in these condensed consolidated financial statements include percentage-of-completion for construction projects; allowances for doubtful accounts receivable and sales returns; inventory and project asset write-downs; stock-based compensation; estimates for future cash flows and economic useful lives of property, plant and equipment and other long-term assets; fair value of financial instruments; valuation of certain accrued liabilities including accrued warranty, restructuring, and termination of supply

8

contracts reserves; valuation of debt without the conversion feature; and income taxes and tax valuation allowances. Actual results could materially differ from those estimates.

Summary of Significant Accounting Policies

Noncontrolling Interest

Noncontrolling interest represents the portion of net assets in a consolidated subsidiary that are not attributable, directly or indirectly, to the Company. In the first quarter of fiscal 2013, the Company entered into a facility with a third-party investor under which the investor was determined to hold a noncontrolling interest in an entity fully consolidated by the Company. The net assets of the shared entity are attributed to the controlling and noncontrolling interests based on the terms of the governing contractual arrangements. The Company further determined the hypothetical liquidation at book value method ("HLBV Method") to be the appropriate method for attributing net assets to the controlling and noncontrolling interests as this method most closely mirrors the economics of the governing contractual arrangements. Under the HLBV Method, the Company allocates recorded income (loss) to each investor based on the change, during the reporting period, of the amount of net assets each investor is entitled to under the governing contractual arrangements in a liquidation scenario.

Other than as described above, there have been no significant changes in the Company's significant accounting policies for the three months ended March 31, 2013, as compared to the significant accounting policies described in the 2012 Form 10-K.

Recent Accounting Pronouncements

In March 2013, the Financial Accounting Standards Board ("FASB") and International Accounting Standards Board ("IASB") issued common disclosure requirements that are intended to enhance comparability between financial statements prepared in accordance with U.S. GAAP and those prepared in accordance with International Financial Reporting Standards ("IFRS"). This new guidance is applicable to companies that have financial instruments or derivatives that are either offset in the balance sheet (presented on a net basis) or subject to an enforceable master netting arrangement or similar arrangement. The requirement does not change the existing offsetting eligibility criteria or the permitted balance sheet presentation for those instruments that meet the eligibility criteria. However, once this disclosure requirement becomes effective, companies will also be required to disclose information about financial instruments and derivatives instruments that have been offset and related arrangements and to provide both net (offset amounts) and gross information in the notes to the financial statements for relevant assets and liabilities that are offset. The disclosure requirement becomes effective retrospectively in the first quarter of the Company's fiscal year 2014. The Company does not expect that the requirement will have a material impact on its condensed consolidated financial statements as it is disclosure only in nature.

In March 2013, the FASB amended its guidance related to foreign currency matters requiring the release of the cumulative translation adjustment into net income when an entity ceases to have a controlling financial interest in a subsidiary or a group of assets within a foreign entity. The amendment will become effective for the Company in the first quarter of fiscal 2014. The Company does not expect that the requirement will have a material impact on its condensed consolidated financial statements.

In February 2013, the FASB amended its disclosure guidance related to the presentation of comprehensive income. The amendment requires reporting of the impact of significant reclassifications out of accumulated other comprehensive income or loss on the line items on the statement of operations, if a reclassification is required in its entirety in one reporting period. The amendment became effective for the Company in the first quarter of fiscal 2013 and did not have a significant impact on its condensed consolidated financial statements.

There has been no issued accounting guidance not yet adopted by the Company that it believes is material or potentially material to its condensed consolidated financial statements.

Note 2. TRANSACTIONS WITH TOTAL AND TOTAL S.A.

On April 28, 2011, the Company and Total entered into a Tender Offer Agreement (the "Tender Offer Agreement"), pursuant to which, on May 3, 2011, Total commenced a cash tender offer to acquire up to 60% of the Company's outstanding shares of former class A common stock and up to 60% of the Company's outstanding shares of former class B common stock (the "Tender Offer") at a price of $23.25 per share for each class. The offer expired on June 14, 2011 and Total accepted for payment on June 21, 2011 a total of 34,756,682 shares of the Company's former class A common stock and 25,220,000 shares

9

of the Company's former class B common stock, representing 60% of each class of its outstanding common stock as of June 13, 2011, for a total cost of approximately $1.4 billion.

On December 23, 2011, the Company entered into a Stock Purchase Agreement with Total, under which it agreed to acquire 100% of the equity interest of Tenesol S.A. from Total for $165.4 million in cash. The Tenesol acquisition was consummated on January 31, 2012. Contemporaneously with the execution of the Tenesol Stock Purchase Agreement, the Company entered into a Private Placement Agreement with Total, under which Total agreed to purchase, and the Company agreed to issue and sell, 18.6 million shares of the Company's common stock for a purchase price of $8.80 per share, thereby increasing Total's ownership to approximately 66% of the Company's outstanding common stock as of that date. The sale was completed contemporaneously with the closing of the Tenesol acquisition.

Credit Support Agreement

In connection with the Tender Offer, the Company and Total S.A. entered into a Credit Support Agreement (the "Credit Support Agreement") under which Total S.A. agreed to enter into one or more guarantee agreements (each a "Guaranty") with banks providing letter of credit facilities to the Company in support of certain Company businesses and other permitted purposes. Total S.A. will guarantee the payment to the applicable issuing bank of the Company's obligation to reimburse a draw on a letter of credit and pay interest thereon in accordance with the letter of credit facility between such bank and the Company. The Credit Support Agreement became effective on June 28, 2011 (the "CSA Effective Date"). Under the Credit Support Agreement, at any time from the CSA Effective Date until the fifth anniversary of the CSA Effective Date, the Company may request that Total S.A. provide a Guaranty in support of the Company's payment obligations with respect to a letter of credit facility. Total S.A. is required to issue and enter into the Guaranty requested by the Company, subject to certain terms and conditions that may be waived by Total S.A., and subject to certain other conditions.

In consideration for the commitments of Total S.A., under the Credit Support Agreement, the Company is required to pay Total S.A. a guarantee fee for each letter of credit that is the subject of a Guaranty and was outstanding for all or part of the preceding calendar quarter. The Company is also required to reimburse Total S.A. for payments made under any Guaranty and certain expenses of Total S.A., plus interest on both. In both the three months ended March 31, 2013 and April 1, 2012, the Company incurred guaranty fees of $1.8 million, to Total S.A.

The Company has agreed to undertake certain actions, including, but not limited to, ensuring that the payment obligations of the Company to Total S.A. rank at least equal in right of payment with all of the Company's other present and future indebtedness, other than certain permitted secured indebtedness. The Company has also agreed to refrain from taking certain actions, including refraining from making any equity distributions so long as it has any outstanding repayment obligation to Total S.A. resulting from a draw on a guaranteed letter of credit.

The Credit Support Agreement will terminate following the fifth anniversary of the CSA Effective Date, after the later of the payment in full of all obligations thereunder and the termination or expiration of each Guaranty provided thereunder.

Affiliation Agreement

In connection with the Tender Offer, the Company and Total entered into an Affiliation Agreement that governs the relationship between Total and the Company following the close of the Tender Offer (the "Affiliation Agreement"). Until the expiration of a standstill period (the "Standstill Period"), Total, Total S.A., any of their respective affiliates and certain other related parties (the "Total Group") may not effect, seek, or enter into discussions with any third-party regarding any transaction that would result in the Total Group beneficially owning shares of the Company in excess of certain thresholds, or request the Company or the Company's independent directors, officers or employees, to amend or waive any of the standstill restrictions applicable to the Total Group. The standstill provisions of the Affiliation Agreement do not apply to securities issued in connection with the Liquidity Support Agreement described below.

The Affiliation Agreement imposes certain limitations on the Total Group's ability to seek to effect a tender offer or merger to acquire 100% of the outstanding voting power of the Company and imposes certain limitations on the Total Group's ability to transfer 40% or more of outstanding shares or voting power of the Company to a single person or group that is not a direct or indirect subsidiary of Total S.A. During the Standstill Period, no member of the Total Group may, among other things, solicit proxies or become a participant in an election contest relating to the election of directors to the Company's Board of Directors.

10

The Affiliation Agreement provides Total with the right to maintain its percentage ownership in connection with any new securities issued by the Company, and Total may also purchase shares on the open market or in private transactions with disinterested stockholders, subject in each case to certain restrictions.

In accordance with the terms of the Affiliation Agreement, on July 1, 2011, the Company's Board of Directors expanded the size of the Board of Directors to eleven members and elected six nominees from Total as directors, following which the Board of Directors was composed of the Chief Executive Officer of the Company (who also serves as the chairman of the Company's Board of Directors), four existing non-Total designated members of the Company's Board of Directors, and six directors designated by Total. Directors designated by Total also serve on certain committees of the Company's Board of Directors. On the first anniversary of the consummation of the Tender Offer on June 21, 2012, the size of the Company's Board of Directors was reduced to nine members and one non-Total designated director and one director designated by Total resigned from the Company's Board of Directors. If the Total Group's ownership percentage of Company common stock declines, the number of members of the Company's Board of Directors that Total is entitled to nominate to the Company's Board of Directors will be further reduced as set forth in the Affiliation Agreement.

The Affiliation Agreement also imposes certain restrictions with respect to the Company's and the Company's Board of Directors' ability to take certain actions, including specifying certain actions that require approval by the directors other than the directors appointed by Total and other actions that require stockholder approval by Total.

Affiliation Agreement Guaranty

Total S.A. has entered into a guaranty (the "Affiliation Agreement Guaranty") pursuant to which Total S.A. unconditionally guarantees the full and prompt payment of Total S.A.'s, Total's and each of Total S.A.'s direct and indirect subsidiaries' payment obligations under the Affiliation Agreement and the full and prompt performance of Total S.A.'s, Total's and each of Total S.A.'s direct and indirect subsidiaries' representations, warranties, covenants, duties, and agreements contained in the Affiliation Agreement.

Research & Collaboration Agreement

In connection with the Tender Offer, Total and the Company have entered into a Research & Collaboration Agreement (the "R&D Agreement") that establishes a framework under which the parties engage in long-term research and development collaboration ("R&D Collaboration"). The R&D Collaboration encompasses a number of different projects ("R&D Projects"), with a focus on advancing technology in the area of photovoltaics. The primary purpose of the R&D Collaboration is to: (i) maintain and expand the Company's technology position in the crystalline silicon domain; (ii) ensure the Company's industrial competitiveness; and (iii) guarantee a sustainable position for both the Company and Total to be best-in-class industry players.

The R&D Agreement enables a joint committee (the "R&D Strategic Committee") to identify, plan and manage the R&D Collaboration. Due to the impracticability of anticipating and establishing all of the legal and business terms that are and will be applicable to the R&D Collaboration or to each R&D Project, the R&D Agreement sets forth broad principles applicable to the parties' potential R&D Collaboration, and the R&D Collaboration Committee establishes the particular terms governing each particular R&D Project consistent with the terms set forth in the R&D Agreement.

Registration Rights Agreement

In connection with the Tender Offer, Total and the Company entered into a customary registration rights agreement (the "Registration Rights Agreement") related to Total's ownership of Company shares. The Registration Rights Agreement provides Total with shelf registration rights, subject to certain customary exceptions, and up to two demand registration rights in any 12-month period, also subject to certain customary exceptions. Total also has certain rights to participate in any registrations of securities initiated by the Company. The Company will generally pay all costs and expenses incurred by the Company and Total in connection with any shelf or demand registration (other than selling expenses incurred by Total). The Company and Total have also agreed to certain indemnification rights. The Registration Rights Agreement terminates on the first date on which: (i) the shares held by Total constitute less than 5% of the then-outstanding common stock; (ii) all securities held by Total may be immediately resold pursuant to Rule 144 promulgated under the Securities and Exchange Act of 1934 (the "Exchange Act") during any 90-day period without any volume limitation or other restriction; or (iii) the Company ceases to be subject to the reporting requirements of the Exchange Act.

Stockholder Rights Plan

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On April 28, 2011, prior to the execution of the Tender Offer Agreement, the Company entered into an amendment (the "Rights Agreement Amendment") to the Rights Agreement, dated August 12, 2008, by and between the Company and Computershare Trust Company, N.A., as Rights Agent (the "Rights Agreement"), in order to, among other things, render the rights therein inapplicable to each of: (i) the approval, execution or delivery of the Tender Offer Agreement; (ii) the commencement or consummation of the Tender Offer; (iii) the consummation of the other transactions contemplated by the Tender Offer Agreement and the related agreements; and (iv) the public or other announcement of any of the foregoing.

On June 14, 2011, the Company entered into a second amendment to the Rights Agreement (the "Second Rights Agreement Amendment"), in order to, among other things, exempt Total, Total S.A. and certain of their affiliates and certain members of a group of which they may become members from the definition of "Acquiring Person" such that the rights issuable pursuant to the Rights Agreement will not become issuable in connection with the completion of the Tender Offer.

By-laws Amendment

On June 14, 2011, the Board of Directors approved the amendment of the Company's By-laws (the "By-laws"). The changes are required under the Affiliation Agreement. The amendments: (i) allow any member of the Total Group to call a meeting of stockholders for the sole purpose of considering and voting on a proposal to effect a Terra Merger (as defined in the Affiliation Agreement) or a Transferee Merger (as defined in the Affiliation Agreement); (ii) provide that the number of directors of the Board shall be determined from time to time by resolution adopted by the affirmative vote of a majority of the entire Board at any regular or special meeting; (iii) require, prior to the termination of the Affiliation Agreement, a majority of independent directors' approval to amend the By-laws so long as Total, together with Total S.A.'s subsidiaries collectively own at least 30% of the voting securities of the Company as well as require, prior to the termination of the Affiliation Agreement, Total's written consent during the Terra Stockholder Approval Period (as defined in the Affiliation Agreement) to amend the By-laws; and (iv) make certain other conforming changes to the By-laws. In addition, in November 2011, the By-laws were amended to remove restrictions prohibiting stockholder consents in writing.

Liquidity Support Agreement with Total S.A.

The Company is party to an agreement with a customer to construct the California Valley Solar Ranch, a solar park. Part of the debt financing necessary for the customer to pay for the construction of this solar park is being provided by the Federal Financing Bank in reliance on a guarantee of repayment provided by the Department of Energy (the "DOE") under a loan guarantee program. On February 28, 2012, the Company entered into a Liquidity Support Agreement with Total S.A. and the DOE, and a series of related agreements with Total S.A. and Total, under which Total S.A. has agreed to provide the Company, or cause to be provided, additional liquidity under certain circumstances to a maximum amount of $600.0 million ("Liquidity Support Facility"). Total S.A. is required to provide liquidity support to the Company under the facility, and the Company is required to accept such liquidity support from Total S.A., if either the Company's actual or projected unrestricted cash, cash equivalents, and unused borrowing capacity are reduced below $100.0 million, or the Company fails to satisfy any financial covenant under its indebtedness. In either such event, subject to a $600.0 million aggregate limit, Total S.A. is required to provide the Company with sufficient liquidity support to increase the amount of its unrestricted cash, cash equivalents and unused borrowing capacity to above $100.0 million, and to restore compliance with its financial covenants. On December 24, 2012, Total S.A. agreed to guarantee the Company's revolving credit facility with Credit Agricole, which reduced the capacity available under the Liquidity Support Facility by $275.0 million. The Liquidity Support Facility is available until the completion of the solar park, expected to be completed before the end of fiscal 2013, and, under certain conditions, up to December 31, 2016, at which time all outstanding guarantees will expire (except for the Total S.A. guarantee of the Credit Agricole facility which extends through maturity) and all outstanding debt under the facility will become due. The use of the Liquidity Support Facility is not limited to direct obligations related to the solar park, and is available for general corporate purposes, but the Company has agreed to conduct its operations, and use any proceeds from such facility, in ways that minimize the likelihood of Total S.A. being required to provide further support. In connection with the Liquidity Support Agreement, the Company also entered into a Compensation and Funding Agreement with Total S.A., and a Private Placement Agreement and a Revolving Credit and Convertible Loan Agreement with Total, which implement the terms of the Liquidity Support Agreement and Compensation Funding Agreement.

Compensation and Funding Agreement

In connection with the Liquidity Support Agreement, on February 28, 2012, the Company entered into a Compensation and Funding Agreement (the "Compensation and Funding Agreement") with Total S.A., pursuant to which, among other things, the Company and Total S.A. established the parameters for the terms of the Liquidity Support Facility and any liquidity injections that may be required to be provided by Total S.A. to the Company pursuant to the Liquidity Support Agreement. The Company has agreed in the Compensation and Funding Agreement to use commercially reasonable efforts to assist Total S.A.

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in the performance of its obligations under the Liquidity Support Agreement and to conduct, and to act in good faith in conducting, its affairs in a manner such that Total S.A.'s obligation under the Liquidity Support Agreement to provide liquidity injections will not be triggered or, if triggered, will be minimized. The Company has also agreed to use any cash provided under the facility in such a way as to minimize the need for further liquidity support. The Compensation and Funding Agreement required the Company to issue, in consideration for Total S.A.'s agreement to provide the Liquidity Support Facility, a warrant ("the Upfront Warrant") to Total that is exercisable to purchase a number of shares of the Company's common stock equal to $75.0 million, divided by the volume-weighted average price for the Company's common stock for the 30 trading-day period ending on the trading day immediately preceding the date of the calculation. The Upfront Warrant will be exercisable at any time for seven years after its issuance, provided that, so long as at least $25.0 million of the Company's convertible debt remains outstanding, such exercise will not cause "any person," including Total S.A., to, directly or indirectly, including through one or more wholly-owned subsidiaries, become the "beneficial owner" (as such terms are defined in Rule 13d-3 and Rule 13d-5 under the Securities and Exchange Act of 1934, as amended), of more than 74.99% of the voting power of the Company's common stock at such time, a circumstance which would trigger the repurchase or conversion of the Company's existing convertible debt. On February 28, 2012, the Company issued to Total the Upfront Warrant to purchase 9,531,677 shares of the Company's common stock with an exercise price of $7.8685, subject to adjustment for customary anti-dilution and other events.

Liquidity support may be provided by Total S.A. or through its affiliates in the form of revolving non-convertible debt, convertible debt, equity, guarantees of Company indebtedness or other forms of liquidity support agreed to by the Company, depending on the amount outstanding under the facility immediately prior to provision of the applicable support among other factors. The Company is required to compensate Total S.A. for any liquidity support actually provided, and the form and amount of such compensation depends on the form and amount of support provided, with the amount of compensation generally increasing with the amount of support provided over time. Such compensation is to be provided in a variety of forms including guarantee fees, warrants to purchase common stock, interest on amounts borrowed, and discounts on equity issued.

During the term of the Compensation and Funding Agreement, the Company will make certain cash payments to Total S.A. within 30 days after the end of each calendar quarter during for the term of the agreement as follows: (i) quarterly payment of a commitment fee in an amount equal to 0.25% of the unused portion of the $600.0 million Liquidity Support Facility as of the end of such quarter; and (ii) quarterly payment of a guarantee fee in an amount equal to 2.75% per annum of the average amount of the Company's indebtedness that is guaranteed by Total S.A. pursuant to any guaranty issued in accordance with the terms of the Compensation and Funding Agreement during such quarter. Any payment obligations of the Company to Total S.A. under the Compensation and Funding Agreement that are not paid when due shall accrue interest until paid in full at a rate equal to 6-month U.S. LIBOR as in effect from time to time plus 5.00% per annum.

On December 24, 2012 Total S.A. issued a guarantee for the Company's obligations under the revolving credit facility with Credit Agricole. The issuance of the guarantee reduced the capacity available under the Liquidity Support Facility from $600.0 million to $325.0 million. The Company is required to pay Total S.A. an annual guarantee fee of 2.75% of the outstanding amount under the Credit Agricole facility. The guarantee reduced interest rates payable under, and removed certain financial and restrictive covenants in the Credit Agricole facility (see Note 9).

In the three months ended March 31, 2013 and April 1, 2012, the Company incurred commitment fees of $1.7 million and $0.6 million, respectively, to Total S.A.

Master Agreement

On December 23, 2011, the Company also entered into a Master Agreement with Total, under which the Company and Total agreed to a framework of transactions related to the Tenesol acquisition and Private Placement Agreement. Additionally, Total has agreed to pursue several negotiations on additional agreements related to directly investing in the Company's R&D program over a multi-year period, purchase of modules and develop a multi-megawatt project using the Company's products. The Company and Total amended the Master Agreement on February 20, 2013 to clarify that the development of the multi-megawatt project using the Company's products shall mean development of up to 10 C-7 Tracker demonstration projects at a total cost to Total of not more than $2.5 million provided agreements for such projects are entered into before December 31, 2013.

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Note 3. OTHER INTANGIBLE ASSETS

The following tables present details of the Company's acquired other intangible assets:

(In thousands)	Gross		Accumulated Amortization			Net
As of March 31, 2013
Patents, trade names and purchased technology	$	49,892	$	(49,892	)	$	—
Purchased in-process research and development	1,000		(403		)	597
Customer relationships and other	28,360		(28,360		)	—
	$	79,252	$	(78,655	)	$	597
As of December 30, 2012
Patents, trade names and purchased technology	$	49,892	$	(49,892	)	$	—
Purchased in-process research and development	1,000		(361		)	639
Customer relationships and other	28,426		(28,321		)	105
	$	79,318	$	(78,574	)	$	744

All of the Company's acquired other intangible assets are subject to amortization. Aggregate amortization expense for other intangible assets totaled $0.1 million and $2.8 million in the three months ended March 31, 2013 and April 1, 2012, respectively.

The Company reviews intangible assets for impairment whenever events or changes in circumstances indicate that the carrying value of such assets may not be recoverable.

Note 4. BALANCE SHEET COMPONENTS

	As of
(In thousands)	March 31, 2013			December 30, 2012
Accounts receivable, net:
Accounts receivable, gross (1)	$	338,147		$	429,977
Less: allowance for doubtful accounts	(31,009		)	(26,773		)
Less: allowance for sales returns	(4,129		)	(5,054		)
	$	303,009		$	398,150

(1) Includes short-term finance receivables associated with solar power systems leased of $4.5 million as of both March 31, 2013 and December 30, 2012, respectively.

Inventories:
Raw materials	$	88,179	$	89,331
Work-in-process	55,668		50,627
Finished goods	137,520		151,428
	$	281,367	$	291,386

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	As of
(In thousands)	March 31, 2013		December 30, 2012
Prepaid expenses and other current assets:
VAT receivables, current portion	$	102,592	$	97,041
Foreign currency derivatives	7,652		1,275
Deferred project costs	135,695		305,980
Deferred costs for solar power systems to be leased	24,148		31,419
Other receivables (2)	63,795		104,640
Other prepaid expenses	40,076		25,230
Other current assets	58,379		47,468
	$	432,337	$	613,053

(2) Includes tolling agreements with suppliers in which the Company provides polysilicon required for silicon ingot manufacturing and procures the manufactured silicon ingots from the suppliers (see Notes 7 and 8).

Project assets - plants and land:
Project assets — plants	$	80,645	$	61,862
Project assets — land	18,148		21,645
	$	98,793	$	83,507
Project assets - plants and land, current portion	$	90,429	$	75,911
Project assets - plants and land, net of current portion	$	8,364	$	7,596

Property, plant and equipment, net:
Land and buildings	$	20,109		$	20,109
Leasehold improvements	226,987			221,378
Manufacturing equipment (3)	545,970			531,289
Computer equipment	75,557			75,438
Furniture and fixtures	8,274			8,178
Solar power systems (4)	34,621			12,501
Solar power systems leased	212,572			163,003
Solar power systems to be leased	65,290			89,423
Construction-in-process	17,719			34,110
	1,207,099			1,155,429
Less: accumulated depreciation (5)	(400,956		)	(380,520		)
	$	806,143		$	774,909

(3) The Company's mortgage loan agreement with International Finance Corporation ("IFC") is collateralized by certain manufacturing equipment with a net book value of $168.1 million and $152.9 million as of March 31, 2013 and December 30, 2012, respectively. The Company also provided security for advance payments received from a third party in the form of collateralized manufacturing equipment with a net book value of $19.1 million and $16.5 million as of March 31, 2013 and December 30, 2012, respectively.

(4) Includes $20.1 million of solar power systems associated with sale-leaseback transactions under the financing method (see Note 7).

(5) Total depreciation expense was $23.6 million and $29.1 million for the three months ended March 31, 2013 and April 1, 2012, respectively.

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	As of
(In thousands)	March 31, 2013		December 30, 2012
Property, plant and equipment, net by geography (6):
Philippines	$	359,171	$	367,708
United States	385,687		343,710
Mexico	32,158		32,409
Europe	28,411		29,292
Other	716		1,790
	$	806,143	$	774,909

(6) Property, plant and equipment, net are based on the physical location of the assets.

The below table presents the cash and non-cash interest expense capitalized to property, plant and equipment and project assets during the three months ended March 31, 2013 and April 1, 2012, respectively.

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012
Interest expense:
Interest cost incurred	$	(27,544	)	$	(19,631	)
Cash interest cost capitalized - property, plant and equipment	228			288
Non-cash interest cost capitalized - property, plant and equipment	57			133
Cash interest cost capitalized - project assets - plant and land	123			278
Non-cash interest cost capitalized - project assets - plant and land	102			231
Interest expense	$	(27,034	)	$	(18,701	)

	As of
(In thousands)	March 31, 2013		December 30, 2012
Other long-term assets:
Equity method investments	$	111,184	$	111,516
Bond hedge derivative	13,946		2,327
Cost method investments	10,240		14,918
Long-term financing receivables	93,540		67,742
Long-term debt issuance costs	29,870		38,185
Other	43,109		41,375
	$	301,889	$	276,063

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	As of
(In thousands)	March 31, 2013		December 30, 2012
Accrued liabilities:
VAT payables	$	6,447	$	2,049
Foreign currency derivatives	6,346		4,891
Short-term warranty reserves	9,254		9,054
Interest payable	8,926		9,672
Deferred revenue	37,197		32,507
Employee compensation and employee benefits	42,491		40,750
Restructuring reserve	21,723		29,477
Short-term residential lease financing	26,581		25,153
Short-term sale-leaseback financing (Note 7)	6,423		—
Other	116,299		93,819
	$	281,687	$	247,372

Other long-term liabilities:
Embedded conversion option derivatives	$	13,946	$	2,327
Long-term warranty reserves	110,295		107,803
Deferred revenue	147,665		128,936
Unrecognized tax benefits	35,551		35,022
Long-term residential lease financing	17,364		11,411
Long-term sale-leaseback financing (Note 7)	27,427		—
Other	59,109		50,120
	$	411,357	$	335,619

Accumulated other comprehensive loss:
Cumulative translation adjustment	$	(3,662	)	$	(2,319	)
Net unrealized gain on derivatives	2,592			(243		)
Deferred taxes	(492		)	41
	$	(1,562	)	$	(2,521	)

Solar Power Systems Leased and to be Leased

The Company leases solar systems to residential customers under both operating and sales-type leases. As of March 31, 2013 and December 30, 2012, solar power systems leased out under operating leases, presented in "Property, plant and equipment, net" in the Company's Condensed Consolidated Balance Sheets was $212.6 million and $163.0 million, respectively, and solar power systems to be leased under operating leases, presented in "Property, plant and equipment, net" in the Company's Condensed Consolidated Balance Sheets was $65.3 million and $89.4 million, respectively. As of March 31, 2013, financing receivables for sales-type leases, presented in "Accounts receivable, net" and "Other long-term assets" in the Company's Condensed Consolidated Balance Sheets was $4.5 million and $93.5 million, respectively. As of December 30, 2012, financing receivables for sales-type leases, presented in "Accounts receivable, net" and "Other long-term assets" in the Company's Condensed Consolidated Balance Sheets was $4.5 million and $67.7 million, respectively. Amounts recognized in the Company's Condensed Consolidated Statement of Operations are not significant in any period presented.

The Company has entered into multiple facilities under which solar power systems are financed with third-party investors. Under the terms of certain programs the investors make upfront payments to the Company, which the Company recognizes as a non-recourse liability that will be reduced over the specified term of the program as customer receivables and government incentives are received by the third party investors. As the non-recourse liability is reduced over time, the Company makes a corresponding reduction in customer and government incentive receivables on its balance sheet. Under this

17

approach, for both operating and sales-type leases the Company continues to account for these arrangements with its residential lease customers in the condensed consolidated financial statements.

As of March 31, 2013 and December 30, 2012, the remaining liability to the third-party investors, presented in Accrued liabilities and Other long-term liabilities on the Company's Condensed Consolidated Balance Sheets, was $43.9 million and $36.6 million, respectively. As of March 31, 2013 and December 30, 2012, the Company has pledged solar assets with an aggregate book value of $327.1 million and $280.8 million, respectively, to the third-party investors as security for its obligations under the contractual arrangements.

In the first quarter of fiscal 2013, the Company entered into a facility with a third-party investor under which both parties will invest in an entity which holds SunPower solar power systems and leases with residential customers. The Company was determined to hold a controlling interest in the less than wholly owned entity and has fully consolidated this entity as a result. The Company accounts for the portion of net assets in this consolidated entity attributable to the investor as Noncontrolling interest in its condensed consolidated financial statements (see Note 1).

Note 5. FAIR VALUE MEASUREMENTS

Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement (observable inputs are the preferred basis of valuation):

• Level 1 — Quoted prices in active markets for identical assets or liabilities.

• Level 2 — Measurements are inputs that are observable for assets or liabilities, either directly or indirectly, other than quoted prices included within Level 1.

• Level 3 — Prices or valuations that require management inputs that are both significant to the fair value measurement and unobservable.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The Company measures certain assets and liabilities at fair value on a recurring basis. There were no transfers between fair value measurement levels during the three months ended March 31, 2013 or April 1, 2012. The Company did not have any assets or liabilities measured at fair value on a recurring basis requiring Level 3 inputs as of March 31, 2013 or December 30, 2012.

The following table summarizes the Company's assets and liabilities measured and recorded at fair value on a recurring basis as of March 31, 2013 and December 30, 2012, respectively:

	March 31, 2013						December 30, 2012
(In thousands)	Total		Level 1		Level 2		Total		Level 1		Level 2
Assets
Cash and cash equivalents:
Money market funds (1)	$	97,000	$	97,000	$	—	$	117,254	$	117,254	$	—
Prepaid expenses and other current assets:
Foreign currency derivatives (Note 10)	7,652		—		7,652		1,275		—		1,275
Other long-term assets:
Debt derivatives (Note 9)	13,946		—		13,946		2,327		—		2,327
Total assets	$	118,598	$	97,000	$	21,598	$	120,856	$	117,254	$	3,602
Liabilities
Accrued liabilities:
Foreign currency derivatives (Note 10)	$	6,346	$	—	$	6,346	$	4,891	$	—	$	4,891
Other long-term liabilities:
Debt derivatives (Note 9)	13,946		—		13,946		2,327		—		2,327
Total liabilities	$	20,292	$	—	$	20,292	$	7,218	$	—	$	7,218

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(1) The Company's cash equivalents consist of money market fund instruments which are classified as available-for-sale and within Level 1 of the fair value hierarchy because they are valued using quoted market prices for identical instruments in active markets.

Other financial instruments, including the Company's accounts receivable, accounts payable and accrued liabilities, are carried at cost, which generally approximates fair value due to the short-term nature of these instruments.

Debt Derivatives

The 4.50% Bond Hedge (as defined in Note 9) and the embedded cash conversion option within the 4.50% debentures (as defined in Note 9) are classified as derivative instruments that require mark-to-market treatment with changes in fair value reported in the Company's Condensed Consolidated Statements of Operations. The fair values of these derivative instruments were determined utilizing the following Level 1 and Level 2 inputs:

	As of (1)
	March 31, 2013			December 30, 2012
Stock price	$	11.54		$	5.49
Exercise price	$	22.53		$	22.53
Interest rate	0.41		%	0.40		%
Stock volatility	55.6		%	59.9		%
Credit risk adjustment	1.13		%	1.07		%
Maturity date	February 18, 2015			February 18, 2015

(1) The valuation model utilizes these inputs to value the right but not the obligation to purchase one share at $22.53. The Company utilized a Black-Scholes valuation model to value the 4.50% Bond Hedge and embedded cash conversion option. The underlying input assumptions were determined as follows:

(i) Stock price. The closing price of the Company's common stock on the last trading day of the quarter.

(ii) Exercise price. The exercise price of the 4.50% Bond Hedge and the embedded cash conversion option.

(iii) Interest rate. The Treasury Strip rate associated with the life of the 4.50% Bond Hedge and the embedded cash conversion option.

(iv) Stock volatility. The volatility of the Company's common stock over the life of the 4.50% Bond Hedge and the embedded cash conversion option.

(v) Credit risk adjustment. Represents the weighted average of the credit default swap rate of the counterparties.

Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis

The Company measures certain investments and non-financial assets (including project assets, property, plant and equipment, and other intangible assets) at fair value on a non-recurring basis in periods after initial measurement in circumstances when the fair value of such asset is impaired below its recorded cost. Information regarding the Company's other intangible asset balances are disclosed in Note 3.

Debt Securities

The Company's debt securities consist of Philippine government bonds, classified as held-to-maturity, which are maintained as collateral for present and future business transactions within the country. These bonds have maturity dates of up to 5 years with a carrying value of $10.9 million as of both March 31, 2013 and December 30, 2012 which are classified as "Restricted long-term marketable securities" on the Company's Condensed Consolidated Balance Sheets. The Company records such held-to-maturity investments at amortized cost based on its ability and intent to hold the securities until maturity. The Company monitors for changes in circumstances and events that would impact its ability and intent to hold such securities until the recorded amortized costs are recovered. The Company incurred no other-than-temporary impairment loss in the three months ended March 31, 2013 and December 30, 2012. The debt securities were categorized in Level 2 of the fair value hierarchy.

Equity and Cost Method Investments

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The Company's equity and cost method investments in non-consolidated entities are comprised of convertible promissory notes, common and preferred stock. The Company monitors these investments, which are included in "Other long-term assets" in its Condensed Consolidated Balance Sheets, for impairment and records reductions in the carrying values when necessary. Circumstances that indicate an other-than-temporary decline include Level 2 and Level 3 measurements such as the valuation ascribed to the issuing company in subsequent financing rounds, decreases in quoted market prices, and declines in operations of the issuer. As of March 31, 2013 and December 30, 2012, the Company had $111.2 million and $111.5 million, respectively, in investments accounted for under the equity method and $10.2 million and $14.9 million, respectively, in investments accounted for under the cost method (see Note 8).

Note 6. RESTRUCTURING

October 2012 Restructuring Plan

On October 12, 2012, the Company's Board of Directors approved a reorganization (the "October 2012 Plan") to accelerate operating cost reduction and improve overall operating efficiency. In connection with the October 2012 Plan, which is expected to be completed within the twelve months following approval, the Company expects to eliminate approximately 900 positions primarily in the Philippines, representing approximately 15% of the Company's global workforce. As a result, the Company expects to record restructuring charges totaling $33.0 million to $40.0 million, related to all segments. Such charges are composed of severance benefits, lease and related termination costs, and other associated costs, $30.2 million of which was recorded in the fourth quarter of fiscal 2012. The Company expects greater than 90% of these charges to be cash.

Legacy Restructuring Plans

During fiscal 2012 and 2011, the Company implemented approved restructuring plans, related to all segments, to align with changes in the global solar market which included the consolidation of the Company's Philippine manufacturing operations as well as actions to accelerate operating cost reduction and improve overall operating efficiency. These restructuring activities were substantially complete as of March 31, 2013, as the remaining accrual is primarily attributable to ongoing facility lease obligations. The Company expects to continue to incur restructuring costs as it revises previous estimates in connection with these plans. Revisions to estimates will primarily be due to changes in assumptions associated with lease and related termination costs.

The following table summarizes the restructuring charges recognized in the Company's Condensed Consolidated Statements of Operations:

	Three Months Ended					Cumulative To Date
	March 31, 2013			April 1, 2012
October 2012 Plan:
Severance and benefits	$	(1,083	)	$	—	$	27,970
Lease and related termination costs	70			—		784
Other costs	435			—		895
	(578		)	—		29,649
Legacy Restructuring Plans:
Non-cash impairment charges	—			—		60,153
Severance and benefits	—			944		19,836
Lease and related termination costs	217			1,770		4,423
Other costs	24			332		7,828
	241			3,046		92,240
Total restructuring charges	$	(337	)	$	3,046	$	121,889

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The following table summarizes the restructuring reserve activity during the three months ended March 31, 2013:

	Three Months Ended
(In thousands)	December 30, 2012		Charges (Benefits)			Payments			March 31, 2013
October 2012 Plan:
Severance and benefits	$	24,439	$	(1,083	)	$	(5,606	)	$	17,750
Lease and related termination costs	714		70			(135		)	649
Other costs (1)	358		435			(482		)	311
Legacy Restructuring Plans:
Severance and benefits	60		—			(41		)	19
Lease and related termination costs	2,436		217			(510		)	2,143
Other costs (1)	1,470		24			(643		)	851
Total restructuring liabilities	$	29,477	$	(337	)	$	(7,417	)	$	21,723

(1) Other costs primarily represent associated legal services and costs associated with the decommissioning of Fab 1 assets.

Note 7. COMMITMENTS AND CONTINGENCIES

Lease Commitments

As of March 31, 2013, future minimum obligations under non-cancellable capital and operating leases are as follows:

	Capital Lease		Operating Lease
(In thousands)	Amount		Amount
Year
2013 (remaining nine months)	$	1,475	$	17,355
2014	1,379		17,479
2015	1,181		15,966
2016	941		15,249
2017	1,330		12,749
Thereafter	1,885		85,502
	$	8,191	$	164,300

Facilities and Equipment

The Company leases its corporate headquarters in San Jose, California and its Richmond, California facility under non-cancellable operating leases from unaffiliated third parties. The Company also has various other lease arrangements, including its European headquarters located in Geneva, Switzerland as well as sales and support offices throughout the United States and Europe including locations in Austin, Texas and La Tour de Salvagny, France. In August 2011, the Company entered into a non-cancellable operating lease agreement for its solar module facility in Mexicali, Mexico from an unaffiliated third party.

The Company additionally leases certain buildings, machinery and equipment under capital leases for terms up to 12 years.

Sale-Leaseback Arrangements

The Company enters into sale-leaseback arrangements under which solar power systems are sold to third parties and subsequently leased back over minimum lease terms of up to 20 years. Separately, the Company enters into power purchase agreements ("PPAs") with end customers, who host the leased solar power systems and buy the electricity directly from the Company under PPAs with durations of up to 20 years. At the end of the lease term, the Company has the option to purchase the systems at fair value or may be required to remove the systems and return them to the third parties.

The Company has classified its sale-leaseback arrangements of solar power systems not involving integral equipment as operating leases. The deferred profit on the sale of these systems is recognized over the term of the lease. Future minimum lease obligations associated with these systems is included in the table above. As of March 31, 2013, future minimum payments

21

to be received from customers under PPAs associated with the solar power systems under sale-leaseback arrangements classified as operating leases was $79.1 million, which will be recognized over the lease term of up to 20 years.

In the first quarter of fiscal 2013, the Company entered into a sale-leaseback arrangement under which the system under the sale-leaseback arrangement was determined to be integral equipment as defined under the accounting guidance for such transactions. The Company was further determined to have continuing involvement with the solar power system throughout the lease due to purchase option rights. As a result of such continuing involvement, the Company accounts for the transaction as a financing. Under the financing method, the proceeds received from the sale of the solar power system are recorded by the Company as a financing liability and presented within "Accrued liabilities" and "Other long-term liabilities" within the Company's Condensed Consolidated Balance Sheets (see Note 4). The financing liability is subsequently reduced by the Company's payments to lease back the solar power system, less interest expense calculated under the interest method. The solar power system under the sale-leaseback arrangement remains on the Company's balance sheet and is classified within "Property, plant and equipment, net" (see Note 4). As of March 31, 2013, future minimum lease obligations for the sale-leaseback arrangement accounted for under the financing method was $37.0 million, which will be recognized over the lease term of 20 years.

Purchase Commitments

The Company purchases raw materials for inventory and manufacturing equipment from a variety of vendors. During the normal course of business, in order to manage manufacturing lead times and help assure adequate supply, the Company enters into agreements with contract manufacturers and suppliers that either allow them to procure goods and services based on specifications defined by the Company, or that establish parameters defining the Company's requirements. In certain instances, these agreements allow the Company the option to cancel, reschedule or adjust the Company's requirements based on its business needs prior to firm orders being placed. Consequently, only a portion of the Company's disclosed purchase commitments arising from these agreements are firm, non-cancellable, and unconditional commitments.

The Company also has agreements with several suppliers, including some of its non-consolidated investees, for the procurement of polysilicon, ingots, wafers, solar cells, solar panels, and Solar Renewable Energy Credits ("SRECs") which specify future quantities and pricing of products to be supplied by the vendors for periods up to 10 years and provide for certain consequences, such as forfeiture of advanced deposits and liquidated damages relating to previous purchases, in the event that the Company terminates the arrangements.

Future purchase obligations under non-cancellable purchase orders and long-term supply agreements as of March 31, 2013 are as follows:

(In thousands)	Amount
Year
2013 (remaining nine months)	$	716,696
2014	451,338
2015	360,508
2016	326,726
2017	194,845
Thereafter	517,095
	$	2,567,208

As of March 31, 2013, total obligations related to non-cancellable purchase orders totaled $0.2 billion and long-term supply agreements with suppliers totaled $2.4 billion. Of the total future purchase commitments of $2.6 billion as of March 31, 2013, $101.7 million are for commitments to related parties.

The Company has tolling agreements with suppliers in which the Company provides polysilicon required for silicon ingot manufacturing and procures the manufactured silicon ingots from the supplier. Annual future purchase commitments in the table above are calculated using the gross future purchase obligations of the Company and are not reduced by tolling agreements and non-cancellable SREC sales arrangements. Total future purchase commitments as of March 31, 2013 would be reduced by $248.6 million had the Company's obligations under such agreements been disclosed using net cash outflows.

The Company expects that all obligations related to non-cancellable purchase orders for manufacturing equipment will be recovered through future cash flows of the solar cell manufacturing lines and solar panel assembly lines when such long-

22

lived assets are placed in service. Factors considered important that could result in an impairment review include significant under-performance relative to expected historical or projected future operating results, significant changes in the manner of use of acquired assets, and significant negative industry or economic trends. Obligations related to non-cancellable purchase orders for inventories match current and forecasted sales orders that will consume these ordered materials and actual consumption of these ordered materials are compared to expected demand regularly. The Company anticipates total obligations related to long-term supply agreements for inventories will be recovered because quantities are less than management's expected demand for its solar power products. The terms of the long-term supply agreements are reviewed by management and the Company assesses the need for any accruals for estimated losses on adverse purchase commitments, such as lower of cost or market value adjustments that will not be recovered by future sales prices, forfeiture of advanced deposits and liquidated damages, as necessary.

Advances to Suppliers

As noted above, the Company has entered into agreements with various polysilicon, ingot, wafer, solar cell, and solar panel vendors that specify future quantities and pricing of products to be supplied by the vendors for periods up to 10 years. Certain agreements also provide for penalties or forfeiture of advanced deposits in the event the Company terminates the arrangements. Under certain agreements, the Company is required to make prepayments to the vendors over the terms of the arrangements. During the three months ended March 31, 2013, the Company paid advances totaling $8.3 million, in accordance with the terms of existing long-term supply agreements. As of March 31, 2013 and December 30, 2012, advances to suppliers totaled $355.7 million and $351.4 million, respectively, the current portion of which is $64.7 million and $50.3 million, respectively. Two suppliers accounted for 75% and 25% of total advances to suppliers as of March 31, 2013, and 76% and 23% as of December 30, 2012.

The Company's future prepayment obligations related to these agreements as of March 31, 2013 are as follows:

(In thousands)	Amount
Year
2013 (remaining nine months)	$	72,813
2014	65,791
	$	138,604

Advances from Customers

In fiscal 2010, the Company and its joint venture, AUO SunPower Sdn. Bhd. ("AUOSP") entered into an agreement under which the Company will resell to AUOSP polysilicon purchased from a third-party supplier and AUOSP will provide prepayments to the Company related to such polysilicon, which prepayments will then be made by the Company to the third-party supplier. These advance payments will be applied as a credit against AUOSP’s polysilicon purchases from the Company. Such polysilicon is used by AUOSP to manufacture solar cells which are sold to the Company on a "cost-plus" basis. As of March 31, 2013 and December 30, 2012, the outstanding advance was $188.6 million and $190.1 million, respectively, of which $10.8 million and $8.8 million, respectively, has been classified in short-term customer advances and $177.8 million and $181.3 million, respectively, in long-term customer advances in the Condensed Consolidated Balance Sheet, based on projected product shipment dates.

In fiscal 2007, the Company entered into an agreement with a third party to supply polysilicon. Under the polysilicon agreement, the Company received advances of $40.0 million in each of fiscal 2008 and 2007 from this third party. These advance payments are applied as a credit against the third party’s polysilicon purchases from the Company. Such polysilicon is used by the third party to manufacture ingots and wafers, which can be sold to the Company or other customers. As of March 31, 2013 and December 30, 2012, the outstanding advance was $55.3 million and $56.1 million, respectively, of which $9.3 million and $8.1 million, respectively, has been classified in short-term customer advances and $46.0 million and $48.0 million, respectively, in long-term customer advances in the Condensed Consolidated Balance Sheet. As of both March 31, 2013 and December 30, 2012, the advances were collateralized by $32.0 million in letters of credit issued under the Company's letter of credit facility with Deutsche Bank, which is fully guaranteed by Total S.A. The Company additionally provided security for the advances in the form of collateralized manufacturing equipment (see Note 4).

The Company has also entered into other agreements with customers who have made advance payments for solar power products. These advances will be applied as shipments of product occur or upon completion of certain project milestones. As of March 31, 2013 and December 30, 2012, such customers had made advances of $50.0 million and $49.5 million, respectively, in the aggregate.

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The estimated utilization of advances from customers as of March 31, 2013 is as follows:

(In thousands)	Amount
Year
2013 (remaining nine months)	$	64,612
2014	22,060
2015	26,387
2016	30,713
2017	35,039
Thereafter	115,144
	$	293,955

Product Warranties

The Company generally warrants or guarantees the performance of the solar panels that it manufactures at certain levels of power output for 25 years. In addition, the Company passes through to customers long-term warranties from OEMs of certain system components, such as inverters. Warranties of 25 years from solar panels suppliers are standard in the solar industry, while inverters typically carry warranty periods ranging from 5 to 10 years. In addition, the Company generally warrants its workmanship on installed systems for periods ranging up to 10 years. The Company maintains reserves to cover the expected costs that could result from these warranties. The Company's expected costs are generally in the form of product replacement or repair. Warranty reserves are based on the Company's best estimate of such costs and are recognized as a cost of revenue. The Company continuously monitors product returns for warranty failures and maintains a reserve for the related warranty expenses based on various factors including historical warranty claims, results of accelerated lab testing, field monitoring, vendor reliability estimates, and data on industry averages for similar products. Historically, warranty costs have been within management's expectations.

Provisions for warranty reserves charged to cost of revenue were $4.5 million and $9.4 million in the three months ended March 31, 2013 and April 1, 2012, respectively:

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012
Balance at the beginning of the period	$	117,172		$	94,323
Accruals for warranties issued during the period	4,455			9,448
Settlements made during the period	(2,078		)	(932		)
Balance at the end of the period	$	119,549		$	102,839

Contingent Obligations

Projects often require the Company to undertake obligations including: (i) system output performance guarantees; (ii) system maintenance; (iii) penalty payments or customer termination rights if the system the Company is constructing is not commissioned within specified timeframes or other milestones are not achieved; and (iv) system put-rights whereby the Company could be required to buy-back a customer's system at fair value on specified future dates if certain minimum performance thresholds are not met for periods of up to two years. Historically the systems have performed significantly above the performance guarantee thresholds, and there have been no cases in which the Company had to buy back a system.

Future Financing Commitments

The Company is required to provide certain funding under the joint venture agreement with AU Optronics Singapore Pte. Ltd. ("AUO") and another financing agreement with a third party, subject to certain conditions (see Note 8).

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The Company's future financing obligations related to these agreements as of March 31, 2013 are as follows:

(In thousands)	Amount
Year
2013 (remaining nine months)	$	150,211
2014	96,770
	$	246,981

Liabilities Associated with Uncertain Tax Positions

Total liabilities associated with uncertain tax positions were $35.6 million and $35.0 million as of March 31, 2013 and December 30, 2012, respectively, and are included in "Other long-term liabilities" in the Company's Condensed Consolidated Balance Sheets as they are not expected to be paid within the next twelve months. Due to the complexity and uncertainty associated with its tax positions, the Company cannot make a reasonably reliable estimate of the period in which cash settlement, if any, would be made for its liabilities associated with uncertain tax positions in other long-term liabilities.

Indemnifications

The Company is a party to a variety of agreements under which it may be obligated to indemnify the other party with respect to certain matters. Typically, these obligations arise in connection with contracts and license agreements or the sale of assets, under which the Company customarily agrees to hold the other party harmless against losses arising from a breach of warranties, representations and covenants related to such matters as title to assets sold, negligent acts, damage to property, validity of certain intellectual property rights, non-infringement of third-party rights, and certain tax related matters including indemnification to customers under §48(c) solar commercial investment tax credit and Treasury Grant payments under Section 1603 of the American Recovery and Reinvestment Act. In each of these circumstances, payment by the Company is typically subject to the other party making a claim to the Company under the procedures specified in the particular contract. These procedures usually allow the Company to challenge the other party's claims or, in case of breach of intellectual property representations or covenants, to control the defense or settlement of any third party claims brought against the other party. Further, the Company's obligations under these agreements may be limited in terms of activity (typically to replace or correct the products or terminate the agreement with a refund to the other party), duration and/or amounts. In some instances, the Company may have recourse against third parties and/or insurance covering certain payments made by the Company.

Legal Matters

Three securities class action lawsuits were filed against the Company and certain of its current and former officers and directors in the United States District Court for the Northern District of California on behalf of a class consisting of those who acquired the Company's securities from April 17, 2008 through November 16, 2009. The cases were consolidated as In re SunPower Securities Litigation, Case No. CV-09-5473-RS (N.D. Cal.), and lead plaintiffs and lead counsel were appointed on March 5, 2010. Lead plaintiffs filed a consolidated complaint on May 28, 2010. The actions arise from the Audit Committee's investigation announcement on November 16, 2009 regarding certain unsubstantiated accounting entries. The consolidated complaint alleges that the defendants made material misstatements and omissions concerning the Company's financial results for 2008 and 2009, seeks an unspecified amount of damages, and alleges violations of sections 10(b) and 20(a) of the Securities Exchange Act of 1934, and sections 11 and 15 of the Securities Act of 1933. The court held a hearing on the defendants' motions to dismiss the consolidated complaint on November 4, 2010. The court dismissed the consolidated complaint with leave to amend on March 1, 2011. An amended complaint was filed on April 18, 2011. The amended complaint added two former employees of the Company as defendants. Defendants filed motions to dismiss the amended complaint on May 23, 2011. The motions to dismiss the amended complaint were heard by the court on August 11, 2011. On December 19, 2011, the court granted in part and denied in part the motions to dismiss, dismissing the claims brought pursuant to sections 11 and 15 of the Securities Act of 1933 and the claims brought against the two newly added former employees. On December 14, 2012, the Company announced that it reached an agreement in principle to settle the consolidated securities class action lawsuit for $19.7 million. The Company recorded a charge in its fiscal fourth quarter of 2012 in the same amount which is further classified within "Accrued liabilities" on the Company's Condensed Consolidated Balance Sheets as of December 30, 2012. On February 1, 2013, the parties filed a stipulation of settlement and a motion for preliminary approval of the settlement. The court entered an order preliminarily approving the settlement on March 25, 2013. The settlement is subject to certain conditions, including final approval by the court after members of the proposed settlement class receive notice and an opportunity to be heard. The final approval hearing is currently scheduled to take place on July 3, 2013. Until the conditions to the settlement have been

25

satisfied, there can be no assurance that the settlement will become final. If the settlement does not become final, the Company believes it has meritorious defenses to these allegations and will vigorously defend itself in these matters.

Derivative actions purporting to be brought on the Company's behalf have also been filed in state and federal courts against several of the Company's current and former officers and directors based on the same events alleged in the securities class action lawsuits described above. The California state derivative cases were consolidated as In re SunPower Corp. S'holder Derivative Litig., Lead Case No. 1-09-CV-158522 (Santa Clara Sup. Ct.), and co-lead counsel for plaintiffs have been appointed. The complaints assert state-law claims for breach of fiduciary duty, abuse of control, unjust enrichment, gross mismanagement, and waste of corporate assets. Plaintiffs filed a consolidated amended complaint on March 5, 2012. The federal derivative complaints were consolidated as In re SunPower Corp. S'holder Derivative Litig., Master File No. CV-09-05731-RS (N.D. Cal.), and lead plaintiffs and co-lead counsel were appointed on January 4, 2010. The federal complaints assert state-law claims for breach of fiduciary duty, waste of corporate assets, and unjust enrichment, and seek an unspecified amount of damages. Plaintiffs filed a consolidated complaint on May 13, 2011. A Delaware state derivative case, Brenner v. Albrecht, et al., C.A. No. 6514-VCP (Del Ch.), was filed on May 23, 2011 in the Delaware Court of Chancery. The complaint asserts state-law claims for breach of fiduciary duty and contribution and indemnification, and seeks an unspecified amount of damages. The Company intends to oppose all the derivative plaintiffs' efforts to pursue this litigation on the Company's behalf. Defendants moved to stay or dismiss the Delaware derivative action on July 5, 2011. The motion to stay was heard by the court on October 27, 2011, and on January 27, 2012 the court granted the Company's motion and stayed the case indefinitely subject to the plaintiffs seeking to lift the stay under specified conditions. The Company is currently unable to determine if the resolution of these matters will have an adverse effect on the Company's financial position, liquidity or results of operations.

The Company is also a party to various other litigation matters and claims that arise from time to time in the ordinary course of its business. While the Company believes that the ultimate outcome of such matters will not have a material adverse effect on the Company, their outcomes are not determinable and negative outcomes may adversely affect the Company's financial position, liquidity or results of operations.

Note 8. EQUITY METHOD INVESTMENTS

The Company accounts for its equity interests in its unconsolidated investees described below under the equity method of accounting as it has the ability to exercise significant influence, but does not own a majority equity interest in, or otherwise control, the investees. As of March 31, 2013 and December 30, 2012, the Company's carrying value of its equity method investments totaled $111.2 million and $111.5 million, respectively, and is classified as “Other long-term assets” in its Condensed Consolidated Balance Sheets. The Company's share of its earnings (loss) from equity method investments is reflected as "Equity in loss of unconsolidated investees" in its Condensed Consolidated Statement of Operations.

Related Party Transactions with Equity Method Investees:

	As of
(In thousands)	March 31, 2013		December 30, 2012
Accounts receivable	$	6,958	$	17,847
Accounts payable	37,841		63,469
Other long-term assets:
Long-term note receivable	1,040		1,040

	Three Months Ended
(In thousands)	March 31, 2013		April 1, 2012
Payments made to equity method investees for products/services	$	118,943	$	179,988

Equity Investment in Huaxia CPV (Inner Mongolia) Power Co., Ltd. ("CCPV")

In December 2012, the Company entered into an agreement with Tianjin Zhonghuan Semiconductor Co. Ltd. ("TZS"), Inner Mongolia Power Group Co. Ltd. ("IMP") and Hohhot Jinqiao City Development Company Co., Ltd. ("HJCD") to form CCPV, a jointly owned entity to manufacture and deploy the Company's C-7 Tracker concentrator technology in Inner Mongolia and other regions in China. Huaxia CPV will be based in Hohhot, Inner Mongolia. Under the terms of the

26

agreement, the Company will invest RMB 100,000,000 (or approximately $16.0 million based on the exchange rate as of March 31, 2013), for a 25% equity ownership in CCPV, with the investment to be made over a period of two years subsequent to the establishment of the entity. The establishment of the entity is subject to approval of the Chinese government. No contributions have been made to date.

Equity Investment in Diamond Energy Pty Ltd. ("Diamond Energy")

In October 2012, the Company made a $3.0 million equity investment in Diamond Energy, an alternative energy project developer and clean electricity retailer headquartered in Melbourne, Australia, in exchange for a 25% equity ownership. The Company additionally provided Diamond Energy $1.0 million under a five year convertible note agreement. The Company will lend an additional $1.0 million under the convertible note agreement during fiscal 2013 and will receive interest of 1% per annum on the amounts lent to Diamond Energy, to be paid upon conversion or maturity.

The Company has concluded that it is not the primary beneficiary of Diamond Energy since, although the Company is obligated to absorb losses and has the right to receive benefits, the Company alone does not have the power to direct the activities of Diamond that most significantly impact its economic performance. The Company accounts for its investment in Diamond using the equity method since the Company is able to exercise significant influence over Diamond due to its board position.

Equity Investment and Joint Venture with AUOSP

In fiscal 2010, the Company, AUO and AU Optronics Corporation, the ultimate parent company of AUO ("AUO Taiwan") formed the joint venture AUOSP. The Company and AUO each own 50% of the joint venture AUOSP. AUOSP owns a solar cell manufacturing facility ("FAB 3") in Malaysia and manufactures solar cells and sells them on a "cost-plus" basis to the Company and AUO.

In connection with the joint venture agreement, the Company and AUO also entered into licensing and joint development, supply, and other ancillary transaction agreements. Through the licensing agreement, the Company and AUO licensed to AUOSP, on a non-exclusive, royalty-free basis, certain background intellectual property related to solar cell manufacturing (in the case of the Company), and manufacturing processes (in the case of AUO). Under the seven-year supply agreement with AUOSP, renewable by the Company for one-year periods thereafter, the Company is committed to purchase 80% of AUOSP's total annual output allocated on a monthly basis to the Company, in fiscal year 2013 and thereafter. The Company and AUO have the right to reallocate supplies from time to time under a written agreement. As required under the joint venture agreement, in fiscal 2010, the Company and AUOSP entered into an agreement under which the Company will resell to AUOSP polysilicon purchased from a third-party supplier and AUOSP will provide prepayments to the Company related to such polysilicon, which prepayment will then be made by the Company to the third-party supplier.

The Company and AUO are not permitted to transfer any of AUOSP's shares held by them, except to each other and to their direct or indirect wholly-owned subsidiaries. In the joint venture agreement, the Company and AUO agreed to each contribute additional amounts through 2014 amounting to $241.0 million, or such lesser amount as the parties may mutually agree. In addition, if AUOSP, the Company or AUO requests additional equity financing to AUOSP, then the Company and AUO will each be required to make additional cash contributions of up to $50.0 million in the aggregate (See Note 7).

The Company has concluded that it is not the primary beneficiary of AUOSP since, although the Company and AUO are both obligated to absorb losses or have the right to receive benefits, the Company alone does not have the power to direct the activities of AUOSP that most significantly impact its economic performance. In making this determination the Company considered the shared power arrangement, including equal board governance for significant decisions, elective appointment, and the fact that both parties contribute to the activities that most significantly impact the joint venture's economic performance. The Company accounts for its investment in AUOSP using the equity method as a result of the shared power arrangement. As of March 31, 2013, the Company's maximum exposure to loss as a result of its involvement with AUOSP is limited to the carrying value of its investment.

Equity Investment in First Philec Solar Corporation ("First Philec Solar")

In fiscal 2007, the Company and First Philippine Electric Corporation ("First Philec") formed First Philec Solar, a jointly owned entity to provide wafer slicing services of silicon ingots to the Company in the Philippines. The Company supplied to First Philec Solar silicon ingots and technology required for slicing silicon. Once manufactured, the Company purchased the completed silicon wafers from First Philec Solar under a six-year wafering supply and sales agreement, which the Company

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terminated in the third quarter of fiscal 2012. There is no obligation or expectation for the Company to provide additional funding to First Philec Solar.

The Company has concluded that it is not the primary beneficiary of First Philec Solar since, although the Company and First Philec are both obligated to absorb losses or have the right to receive benefits from First Philec Solar, such variable interests held by the Company do not empower it to direct the activities that most significantly impact First Philec Solar's economic performance. In reaching this determination, the Company considered the significant control exercised by First Philec over the joint venture's Board of Directors, management and daily operations. The Company accounts for its investment in First Philec Solar using the equity method since the Company is able to exercise significant influence over First Philec Solar due to its board positions.

Equity Investment in Woongjin Energy Co., Ltd ("Woongjin Energy")

In fiscal 2006, the Company and Woongjin Holdings Co., Ltd. ("Woongjin") formed Woongjin Energy, a jointly owned entity to manufacture monocrystalline silicon ingots in Korea. The Company may supply polysilicon, services, and technical support required for silicon ingot manufacturing to Woongjin Energy. Once manufactured, the Company may purchase the silicon ingots from Woongjin Energy under a nine-year agreement through 2016. There is no obligation or expectation for the Company to provide additional funding to Woongjin Energy.

During fiscal 2010, Woongjin Energy completed its initial public offering ("IPO") and the sale of 15.9 million new shares of common stock. As a result of the IPO, the Company concluded that Woongjin Energy was no longer a variable interest entity. During fiscal 2011, the Company sold 15.5 million shares of Woongjin Energy on the open market, reducing the Company's percentage equity ownership in Woongjin Energy from 31% to 6%. During the first quarter of fiscal 2012, the Company sold its remaining shares of Woongjin Energy on the open market for total proceeds which equaled the remaining investment carrying balance. As a result, the Company's percentage equity ownership and investment carrying balance was reduced to zero.

The Company accounted for its former investment in Woongjin Energy using the equity method as the Company was able to exercise significant influence over Woongjin Energy due to its board position and its consumption of a significant portion of their output.

Note 9. DEBT AND CREDIT SOURCES

The following table summarizes the Company's outstanding debt as of March 31, 2013 and the related maturity dates:

			Payments Due by Period
(In thousands)	Face Value		2013 (remaining nine months)		2014		2015		2016		2017		Beyond 2017
Convertible debt:
4.50% debentures	$	250,000	$	—	$	—	$	250,000	$	—	$	—	$	—
4.75% debentures	230,000		—		230,000		—		—		—		—
0.75% debentures	79		—		—		79		—		—		—
IFC mortgage loan	70,000		7,500		15,000		15,000		15,000		15,000		2,500
CEDA loan	30,000		—		—		—		—		—		30,000
Credit Agricole revolving credit facility	100,000		—		100,000		—		—		—		—
Other debt (1)	25,355		74		1,137		1,075		975		952		21,142
	$	705,434	$	7,574	$	346,137	$	266,154	$	15,975	$	15,952	$	53,642

(1) The balance of Other debt excludes payments related to capital leases which are disclosed in Note 7. "Commitments and Contingencies" to these condensed consolidated financial statements.

Convertible Debt

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The following table summarizes the Company's outstanding convertible debt:

	March 31, 2013						December 30, 2012
(In thousands)	Carrying Value		Face Value		Fair Value (1)		Carrying Value		Face Value		Fair Value (1)
Convertible debt:
4.50% debentures	$	212,631	$	250,000	$	250,823	$	208,550	$	250,000	$	228,750
4.75% debentures	230,000		230,000		229,425		230,000		230,000		218,960
0.75% debentures	79		79		79		79		79		79
	$	442,710	$	480,079	$	480,327	$	438,629	$	480,079	$	447,789

(1) The fair value of the convertible debt was determined using Level 1 inputs based on quarterly market prices as reported by an independent pricing source.

4.50% Debentures

In fiscal 2010, the Company issued $250.0 million in principal amount of its 4.50% senior cash convertible debentures ("4.50% debentures"). Interest is payable semi-annually, on March 15 and September 15 of each year, at a rate of 4.50% per annum which commenced on September 15, 2010. The 4.50% debentures mature on March 15, 2015 unless repurchased or converted in accordance with their terms prior to such date.

The 4.50% debentures are convertible only into cash, and not into shares of the Company's common stock (or any other securities). Prior to December 15, 2014, if the weighted average price of the Company's common stock is more than 130% of the then current conversion price for at least 20 out of 30 consecutive trade days in the last month of the fiscal quarter, then holders of the 4.50% debentures have the right to convert the debentures any day in the following fiscal quarter and, thereafter, they will be convertible at any time, based on an initial conversion price of $22.53 per share of the Company's common stock. The conversion price will be subject to adjustment in certain events, such as distributions of dividends or stock splits. Upon conversion, the Company will deliver an amount of cash calculated by reference to the price of its common stock over the applicable observation period. The Company may not redeem the 4.50% debentures prior to maturity. Holders may also require the Company to repurchase all or a portion of their 4.50% debentures upon a fundamental change, as defined in the debenture agreement, at a cash repurchase price equal to 100% of the principal amount plus accrued and unpaid interest. In the event of certain events of default, such as the Company's failure to make certain payments or perform or observe certain obligations thereunder, Wells Fargo, the trustee, or holders of a specified amount of then-outstanding 4.50% debentures will have the right to declare all amounts then outstanding due and payable.

The embedded cash conversion option within the 4.50% debentures is a derivative instrument that is required to be separated from the 4.50% debentures and accounted for separately as a derivative instrument (derivative liability) with changes in fair value reported in the Company's Condensed Consolidated Statements of Operations until such transaction settles or expires. The initial fair value liability of the embedded cash conversion option was classified within "Other long-term liabilities" and simultaneously reduced the carrying value of "Convertible debt, net of current portion" in the Company's Condensed Consolidated Balance Sheet.

During the three months ended March 31, 2013 and April 1, 2012, the Company recognized a non-cash loss of $11.6 million and $1.6 million, respectively, recorded in "Other, net" in the Company's Condensed Consolidated Statement of Operations related to the change in fair value of the embedded cash conversion option.

Call Spread Overlay with Respect to 4.50% Debentures ("CSO2015")

Concurrent with the issuance of the 4.50% debentures, the Company entered into privately negotiated convertible debenture hedge transactions (collectively, the "4.50% Bond Hedge") and warrant transactions (collectively, the "4.50% Warrants" and together with the 4.50% Bond Hedge, the “CSO2015”), with certain of the initial purchasers of the 4.50% cash convertible debentures or their affiliates. The CSO2015 transactions represent a call spread overlay with respect to the 4.50% debentures, whereby the cost of the 4.50% Bond Hedge purchased by the Company to cover the cash outlay upon conversion of the debentures is reduced by the sales prices of the 4.50% Warrants. Assuming full performance by the counterparties (and 4.50% Warrants strike prices in excess of the conversion price of the 4.50% debentures), the transactions effectively reduce the Company's potential payout over the principal amount on the 4.50% debentures upon conversion of the 4.50% debentures.

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Under the terms of the 4.50% Bond Hedge, the Company bought from affiliates of certain of the initial purchasers options to acquire, at an exercise price of $22.53 per share, subject to customary adjustments for anti-dilution and other events, cash in an amount equal to the market value of up to 11.1 million shares of the Company's common stock. Under the terms of the amended 4.50% Warrants the Company sold to affiliates of certain of the initial purchasers of the 4.50% cash convertible debentures warrants to acquire, at an exercise price of $24.00 per share, up to 11.1 million shares of the Company's common stock. Each 4.50% Bond Hedge and 4.50% Warrant transaction is a separate transaction, entered into by the Company with each counterparty, and is not part of the terms of the 4.50% debentures.

The 4.50% Bond Hedge, which is indexed to the Company's common stock, is a derivative instrument that requires mark-to-market accounting treatment due to the cash settlement features until such transactions settle or expire. The initial fair value of the 4.50% Bond Hedge was classified as "Other long-term assets" in the Company's Condensed Consolidated Balance Sheets.

During the three months ended March 31, 2013 and April 1, 2012, the Company recognized a non-cash gain of $11.6 million and $1.6 million, respectively, in "Other, net" in the Company's Condensed Consolidated Statement of Operations in the Company's Condensed Consolidated Statement of Operations related to the change in fair value of the 4.50% Bond Hedge.

4.75% Debentures

In May 2009, the Company issued $230.0 million in principal amount of its 4.75% senior convertible debentures ("4.75% debentures"). Interest on the 4.75% debentures is payable on April 15 and October 15 of each year. Holders of the 4.75% debentures are able to exercise their right to convert the debentures at any time into shares of the Company's common stock at a conversion price equal to $26.40 per share. The applicable conversion rate may adjust in certain circumstances, including upon a fundamental change, as described in the indenture governing the 4.75% debentures. If not earlier converted, the 4.75% debentures mature on April 15, 2014. Holders may also require the Company to repurchase all or a portion of their 4.75% debentures upon a fundamental change at a cash repurchase price equal to 100% of the principal amount plus accrued and unpaid interest. In the event of certain events of default, such as the Company's failure to make certain payments or perform or observe certain obligations thereunder, Wells Fargo, the trustee, or holders of a specified amount of then-outstanding 4.75% debentures will have the right to declare all amounts then outstanding due and payable.

Call Spread Overlay with Respect to the 4.75% Debentures ("CSO2014")

Concurrent with the issuance of the 4.75% debentures, the Company entered into certain convertible debenture hedge transactions (the "4.75% Bond Hedge") and warrant transactions (the "4.75% Warrants") with affiliates of certain of the underwriters of the 4.75% debentures (the "CSO2014"), whereby the cost of the 4.75% Bond Hedges purchased by the Company to cover the potential share outlays upon conversion of the debentures is reduced by the sales prices of the 4.75% Warrants. The CSO2014 are not subject to mark-to-market accounting treatment since they may only be settled by issuance of the Company's common stock.

The 4.75% Bond Hedge allows the Company to purchase up to 8.7 million shares of the Company's common stock. The 4.75% Bond Hedge will be settled on a net share basis. Each 4.75% Bond Hedge and 4.75% Warrant is a separate transaction, entered into by the Company with each counterparty, and is not part of the terms of the 4.75% debentures. Holders of the 4.75% debentures do not have any rights with respect to the 4.75% Bond Hedges and 4.75% Warrants. The exercise prices of the 4.75% Bond Hedge are $26.40 per share of the Company's common stock, subject to customary adjustment for anti-dilution and other events.

Under the amended 4.75% Warrants, the Company sold warrants to acquire up to 8.7 million shares of the Company's common stock at an exercise price of $26.40 per share of the Company's common stock, subject to adjustment for certain anti-dilution and other events. The 4.75% Warrants expire in 2014.

1.25% Debentures

In fiscal 2007, the Company issued $200.0 million in principal amount of its 1.25% senior convertible debentures and received net proceeds of $194.0 million. During the fourth quarter of fiscal 2008, the Company received notices for the conversion of $1.4 million in principal amount of the 1.25% debentures which it settled for $1.2 million in cash and 1,000 shares of common stock. As of January 2, 2012, an aggregate principal amount of $198.6 million of the 1.25% debentures remained issued and outstanding. The 1.25% debentures had a maturity date of February 15, 2027 unless repurchased or converted in accordance with their terms prior to such date. Holders had the option to require the Company to repurchase all or a portion of their 1.25% debentures on each of February 15, 2012, February 15, 2017 and February 15, 2022, or if the Company

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experiences certain types of corporate transactions constituting a fundamental change, as defined in the indenture governing the 1.25% debentures. In addition, the Company could redeem some or all of the 1.25% debentures on or after February 15, 2012. Accordingly, the Company classified the 1.25% debentures as short-term liabilities in the Condensed Consolidated Balance Sheets as of January 2, 2012. On February 16, 2012, based upon the exercise of the holders' put rights, the Company repurchased $198.6 million in principal amount of the 1.25% debentures at a cash price of $199.8 million, representing 100% of the principal amount of the 1.25% debentures plus accrued and unpaid interest. None of the 1.25% debentures remained issued and outstanding after the repurchase.

July 2007 Share Lending Arrangement

Concurrent with the offering of the Company's 0.75% debentures, the Company lent 1.8 million shares of its former class A common stock to Credit Suisse International ("CSI"), an affiliate of Credit Suisse Securities (USA) LLC ("Credit Suisse"), one of the underwriters of the 0.75% debentures. The loaned shares were to be used to facilitate the establishment by investors in the 1.25% debentures and 0.75% debentures of hedged positions in the Company's common stock. The Company did not receive any proceeds from these offerings of former class A common stock, but received a nominal lending fee of $0.001 per share for each share of common stock that is loaned under the share lending agreement.

As of January 1, 2012, the fair value of the 1.8 million outstanding loaned shares of common stock was $11.2 million. In connection with the Company's repurchase of 100% of the principal amount of the 1.25% debentures, on February 23, 2012, the 1.8 million shares of the Company's common stock lent to CSI were returned and the share lending agreement was thereby terminated.

Other Debt and Credit Sources

Mortgage Loan Agreement with IFC

On May 6, 2010, the Company entered into a mortgage loan agreement with IFC. Under the loan agreement, the Company may borrow up to $75.0 million during the first two years, and shall repay the amount borrowed, starting 2 years after the date of borrowing, in 10 equal semiannual installments over the following 5 years. On October 3, 2012, IFC granted a temporary waiver of a financial covenant for the fourth quarter of fiscal 2012 through the fourth quarter of fiscal 2013. Subsequent to the waiver, the Company is required to pay interest of LIBOR plus 3% per annum on outstanding borrowings through January 5, 2013; interest of LIBOR plus 4.25% per annum on outstanding borrowings from January 6, 2013 through September 30, 2013; interest of LIBOR plus 5% per annum on outstanding borrowings from October 1, 2013 through January 5, 2014; a front-end fee of 1% on the principal amount of borrowings at the time of borrowing; and a commitment fee of 0.5% per annum on funds available for borrowing and not borrowed. If we utilize the waiver for the fourth quarter of 2013, the 2013 rates would continue to apply in 2014. If the Company does not need to utilize the waiver, it is required to pay interest of LIBOR plus 3% per annum on outstanding borrowings; a front-end fee of 1% on the principal amount of borrowings at the time of borrowing; and a commitment fee of 0.5% per annum on funds available for borrowing and not borrowed. The Company may prepay all or a part of the outstanding principal, subject to a 1% prepayment premium. The Company has pledged certain assets as collateral supporting its repayment obligations (see Note 4). Additionally, in accordance with the terms of the agreement, the Company is required to establish a debt service reserve account which shall contain the amount, as determined by IFC, equal to the aggregate principal and interest due on the next succeeding interest payment date after such date. As of March 31, 2013 and December 30, 2012, the Company had restricted cash and cash equivalents of $9.2 million and $6.4 million, respectively, related to the IFC debt service reserve.

The Company's outstanding borrowings under the mortgage loan agreement with IFC on its Condensed Consolidated Balance Sheets are as follows:

	As of
(In thousands)	March 31, 2013		December 30, 2012
Short-term debt	$	15,000	$	12,500
Long-term debt	55,000		62,500
	$	70,000	$	75,000

Loan Agreement with California Enterprise Development Authority ("CEDA")

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On December 29, 2010, the Company borrowed the proceeds of the $30.0 million aggregate principal amount of CEDA's tax-exempt Recovery Zone Facility Revenue Bonds (SunPower Corporation - Headquarters Project) Series 2010 (the "Bonds") maturing April 1, 2031 under a loan agreement with CEDA. The Company's obligations under the loan agreement are contained in a promissory note dated December 29, 2010 issued by the Company to CEDA, which assigned the promissory note, along with all right, title and interest in the loan agreement, to Wells Fargo, as trustee, with respect to the Bonds for the benefit of the holders of the Bonds. The Bonds initially bore interest at a variable interest rate (determined weekly), but in June 2011, at the Company's option, were converted into fixed-rate bonds at 8.50% per annum (which include covenants of, and other restrictions on the Company). Additionally, in accordance with the terms of the loan agreement, the Company is required to keep all loan proceeds on deposit with Wells Fargo, the trustee, until funds are withdrawn by it for use in relation to the design and leasehold improvements of its new corporate headquarters in San Jose, California. As of both March 31, 2013 and December 30, 2012, the Company had restricted cash and cash equivalents of $3.0 million, for design and leasehold improvements and debt service reserves under the CEDA loan agreement.

The Company's outstanding borrowings under the loan agreement with CEDA on its Condensed Consolidated Balance Sheets is as follows:

	As of
(In thousands)	March 31, 2013		December 30, 2012
Long-term debt	$	30,000	$	30,000

September 2011 Revolving Credit Facility with Credit Agricole

On September 27, 2011, the Company entered into a revolving credit agreement with Credit Agricole, as administrative agent, and certain financial institutions, under which the Company may borrow up to $275.0 million until September 27, 2013. Amounts borrowed may be repaid and reborrowed until September 27, 2013.

On December 24, 2012, the Company amended the facility to reflect Total S.A.'s guarantee of its obligations under the facility. The facility amendment extended the maturity date to January 31, 2014, reduced interest rates payable and removed certain financial and restrictive covenants. Subsequent to the amendment, the Company is required to pay interest on outstanding borrowings of (a) with respect to any LIBOR loan, 0.6% plus the LIBOR divided by a percentage equal to one minus the stated maximum rate of all reserves required to be maintained against "Eurocurrency liabilities" as specified in Regulation D; and (b) with respect to any alternative base loan, 0.25% plus the greater of (1) the prime rate, (2) the Federal Funds rate plus 0.5%, and (3) the one month LIBOR plus 1%; and a commitment fee equal to 0.06% per annum on funds available for borrowing and not borrowed.

The Company's outstanding borrowings under the revolving credit facility with Credit Agricole on its Condensed Consolidated Balance Sheets is as follows:

	As of
(In thousands)	March 31, 2013		December 30, 2012
Short-term debt	$	100,000	—
Long-term debt	—		275,000

Liquidity Support Agreement with Total S.A.

On February 28, 2012, the Company entered into a Liquidity Support Agreement with Total S.A. and the DOE, and a series of related agreements with Total S.A. and Total, under which Total S.A. has agreed to provide the Company, or cause to be provided, additional liquidity under certain circumstances (see Note 2). As of March 31, 2013, $325.0 million remained available to the Company under the facility.

Other Debt

In order to facilitate the construction and sale of certain solar projects, the Company obtains non-recourse project loans which in certain cases permit customers to assume the loans at the time of sale. These loans are contemplated as part of the structure of the sales transaction and not guaranteed or otherwise supported by SunPower. During the first quarter of fiscal 2013, the Company drew down ILS 87.7 million (or approximately $24.1 million based on the exchange rate as of March 31,

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2013) under two long-term project loans with a consortium of lenders to facilitate the development of two 10 MW utility and power plant projects under construction in Israel.

Other debt is further comprised of non-recourse project loans related to Tenesol established in 2003 and 2008 which are scheduled to mature through 2028 and totaled $1.0 million and $1.1 million as of March 31, 2013 and December 30, 2012, respectively. Also, the Company's sublessor has made improvements to one of the Company's operating leases, reimbursable by the Company at monthly installments over the remaining lease term. The outstanding balance of the loan as of March 31, 2013 was $0.3 million.

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The Company's other outstanding borrowings on its Condensed Consolidated Balance Sheets are as follows:

	As of
(In thousands)	March 31, 2013		December 30, 2012
Short-term debt	$	74	$	134
Long-term debt	25,281		1,234
	$	25,355	$	1,368

August 2011 Letter of Credit Facility with Deutsche Bank

On August 9, 2011, the Company entered into a letter of credit facility agreement with Deutsche Bank, as issuing bank and as administrative agent, and certain financial institutions, which was amended on December 20, 2011. Payment of obligations under the letter of credit facility is guaranteed by Total S.A. pursuant to the Credit Support Agreement. The letter of credit facility provides for the issuance, upon request by the Company, of letters of credit by the issuing banks thereunder in order to support certain obligations of the Company, in an aggregate amount not to exceed (a) $725.0 million until December 31, 2012; and (b) $771.0 million for the period from January 1, 2013 through December 31, 2013. Aggregate letter of credit amounts may be increased upon the agreement of the parties but, otherwise, may not exceed (i) $878.0 million for the period from January 1, 2014 through December 31, 2014; (ii) $936.0 million for the period from January 1, 2015 through December 31, 2015; and (iii) $1.0 billion for the period from January 1, 2016 through June 28, 2016. Each letter of credit issued under the letter of credit facility must have an expiration date no later than the second anniversary of the issuance of that letter of credit, provided that up to 15% of the outstanding value of the letters of credit may have an expiration date of between two and three years from the date of issuance.

As of March 31, 2013 and December 30, 2012, letters of credit issued under the August 2011 letter of credit facility with Deutsche Bank totaled $703.3 million and $725.3 million, respectively.

September 2011 Letter of Credit Facility with Deutsche Bank Trust

On September 27, 2011, the Company entered into a letter of credit facility with Deutsche Bank Trust which provides for the issuance, upon request by the Company, of letters of credit to support obligations of the Company in an aggregate amount not to exceed $200.0 million. Each letter of credit issued under the facility is fully cash-collateralized and the Company has entered into a security agreement with Deutsche Bank Trust, granting them a security interest in a cash collateral account established for this purpose.

As of March 31, 2013 and December 30, 2012, letters of credit issued under the Deutsche Bank Trust facility amounted to $1.8 million and $17.5 million, respectively, which were fully collateralized with restricted cash on the Condensed Consolidated Balance Sheets.

Note 10. FOREIGN CURRENCY DERIVATIVES

The Company has non-U.S. subsidiaries that operate and sell the Company's products in various global markets, primarily in Europe. As a result, the Company is exposed to risks associated with changes in foreign currency exchange rates. It is the Company's policy to use various techniques, including entering into foreign currency derivative instruments, to manage the exposures associated with forecasted revenues, purchases of foreign sourced equipment and non-U.S. dollar denominated monetary assets and liabilities. The Company does not enter into foreign currency derivative financial instruments for speculative or trading purposes.

The Company is required to recognize derivative instruments as either assets or liabilities at fair value in its Balance Sheets. It is the Company's policy to present all derivative fair value amounts gross on its Condensed Consolidated Balance Sheets regardless of legal right of offset. The Company utilizes the income approach and mid-market pricing to calculate the fair value of its option and forward contracts based on market volatilities, spot and forward rates, interest rates, and credit default swaps rates from published sources. The following table presents information about the Company's hedge instruments measured at fair value on a recurring basis as of March 31, 2013 and December 30, 2012, all of which utilize Level 2 inputs under the fair value hierarchy:

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(In thousands)	Balance Sheet Classification	March 31, 2013		December 30, 2012
Assets	Prepaid expenses and other current assets
Derivatives designated as hedging instruments:
Foreign currency option contracts		$	2,580	$	519
Foreign currency forward exchange contracts		298		—
		$	2,878	$	519
Derivatives not designated as hedging instruments:
Foreign currency option contracts		$	618	$	25
Foreign currency forward exchange contracts		4,156		731
		$	4,774	$	756
Liabilities	Accrued liabilities
Derivatives designated as hedging instruments:
Foreign currency option contracts		$	10	$	387
Foreign currency forward exchange contracts		4		23
		$	14	$	410
Derivatives not designated as hedging instruments:
Foreign currency option contracts		$	618	$	26
Foreign currency forward exchange contracts		5,714		4,455
		$	6,332	$	4,481

Valuations are based on quoted prices in markets that are not active or for which all significant inputs are observable, directly or indirectly. The selection of a particular technique to value an over-the-counter ("OTC") foreign currency derivative depends upon the contractual term of, and specific risks inherent with, the instrument as well as the availability of pricing information in the market. The Company generally uses similar techniques to value similar instruments. Valuation techniques utilize a variety of inputs, including contractual terms, market prices, yield curves, credit curves and measures of volatility. For OTC foreign currency derivatives that trade in liquid markets, such as generic forward and option contracts, inputs can generally be verified and selections do not involve significant management judgment.

The following table summarizes the pre-tax amount of unrealized gain or loss recognized in "Accumulated other comprehensive income" ("OCI") in "Stockholders' equity" in the Condensed Consolidated Balance Sheets:

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012
Derivatives designated as cash flow hedges:
Gain (loss) in Accumulated OCI at the beginning of the period	$	(243	)	$	10,473
Unrealized gain (loss) recognized in OCI (effective portion)	2,448			(2,425		)
Less: Loss (gain) reclassified from Accumulated OCI to revenue (effective portion)	387			(3,325		)
Net gain (loss) on derivatives	$	2,835		$	(5,750	)
Gain in Accumulated OCI at the end of the period	$	2,592		$	4,723

The following table summarizes the amount of gain or loss recognized in "Other, net" in the Condensed Consolidated Statements of Operations in the three months ended March 31, 2013 and April 1, 2012:

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	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012
Derivatives designated as cash flow hedges:
Loss recognized in "Other, net" on derivatives (ineffective portion and amount excluded from effectiveness testing)	$	(789	)	$	(365	)
Derivatives not designated as hedging instruments:
Gain (loss) recognized in "Other, net"	$	166		$	(1,290	)

Foreign Currency Exchange Risk

Designated Derivatives Hedging Cash Flow Exposure

The Company's subsidiaries have had and will continue to have material cash flows, including revenues and expenses, which are denominated in currencies other than their functional currencies. The Company's cash flow exposure primarily relates to anticipated third party foreign currency revenues and expenses. Changes in exchange rates between the Company's subsidiaries' functional currencies and other currencies in which it transacts will cause fluctuations in margin, cash flow expectations, and cash flows realized or settled. Accordingly, the Company enters into derivative contracts to hedge the value of a portion of these forecasted cash flows and to protect financial performance.

As of March 31, 2013, the Company had designated outstanding cash flow hedge option contracts and forward contracts with an aggregate notional value of $53.6 million and $25.9 million, respectively. The maturity dates of the outstanding contracts as of March 31, 2013 range from April 2013 to September 2013. As of December 30, 2012, the Company had designated outstanding hedge option contracts and forward contracts with an aggregate notional value of $71.0 million and $26.4 million, respectively. The Company designates either gross external or intercompany revenue up to its net economic exposure. These derivatives have a maturity of one year or less and consist of foreign currency option and forward contracts. The effective portion of these cash flow hedges are reclassified into revenue when third party revenue is recognized in the Condensed Consolidated Statements of Operations.

The Company expects to reclassify the majority of its net gains or losses related to these option and forward contracts that are included in accumulated other comprehensive gain as of March 31, 2013 to revenue in the next 12 months. The Company uses the spot to spot method to measure the effectiveness of its cash flow hedges. Under this method for each reporting period, the change in fair value of the forward contracts attributable to the changes in spot exchange rates (the effective portion) is reported in accumulated other comprehensive income (loss) on its consolidated balance sheet and the remaining change in fair value of the forward contract (the excluded and the ineffective portions, if any) is recognized in other income (expense), net, in its Condensed Consolidated Statement of Operations. The premium paid or time value of an option on the date of purchase is recorded as an asset in the Condensed Consolidated Balance Sheets. Thereafter, any change in value related to time value is included in "Other, net" in the Condensed Consolidated Statements of Operations. The Company additionally had offsetting non-designated option contracts with an aggregate notional value of $12.8 million and zero as of March 31, 2013 and December 30, 2012, respectively.

Under cash flow hedge accounting rules for foreign currency derivatives, the Company reflects the effective gains and losses on its hedged transactions in accumulated other comprehensive income (loss) rather than current earnings until the hedged transactions occur. However, if the Company determines that the anticipated hedged transactions are probable not to occur, it must immediately reclassify any cumulative market gains and losses into its Condensed Consolidated Statement of Operations. During the three months ended March 31, 2013, the Company determined that all its anticipated hedged transactions were probable to occur.

Non-Designated Derivatives Hedging Transaction Exposure

Other derivatives not designated as hedging instruments consist of forward contracts used to hedge re-measurement of foreign currency denominated monetary assets and liabilities primarily for intercompany transactions, receivables from customers, and payables to third parties. Changes in exchange rates between the Company's subsidiaries' functional currencies and the currencies in which these assets and liabilities are denominated can create fluctuations in the Company's reported consolidated financial position, results of operations and cash flows. The Company enters into forward contracts, which are originally designated as cash flow hedges, and de-designates them upon recognition of the anticipated transaction to protect resulting non-functional currency monetary assets. These forward contracts as well as additional forward contracts are entered

36

into to hedge foreign currency denominated monetary assets and liabilities against the short-term effects of currency exchange rate fluctuations. The Company records its derivative contracts that are not designated as hedging instruments at fair value with the related gains or losses recorded in "Other, net" in the Condensed Consolidated Statements of Operations. The gains or losses on these contracts are substantially offset by transaction gains or losses on the underlying balances being hedged. As of March 31, 2013 and December 30, 2012, the Company held forward contracts with an aggregate notional value of $49.7 million and $121.8 million, respectively, to hedge balance sheet exposure. The maturity dates of these contracts range from April 2013 to November 2013.

Credit Risk

The Company's option and forward contracts do not contain any credit-risk-related contingent features. The Company is exposed to credit losses in the event of nonperformance by the counterparties of its option and forward contracts. The Company enters into derivative contracts with high-quality financial institutions and limits the amount of credit exposure to any single counterparty. In addition, the derivative contracts are limited to a time period of less than one year and the Company continuously evaluates the credit standing of its counterparties.

Note 11. INCOME TAXES

In the three months ended March 31, 2013, the Company's income tax provision of $3.0 million on a loss before income taxes and equity in losses of unconsolidated investees of $58.6 million was primarily due to projected tax expense in profitable foreign jurisdictions as well as minimum taxes. In the three months ended April 1, 2012, the Company's income tax provision was $1.4 million on a loss before income taxes and equity in losses of unconsolidated investees of $69.7 million was primarily due to projected tax expense in profitable foreign jurisdictions.

Note 12. NET LOSS PER SHARE OF COMMON STOCK

The Company calculates net income (loss) per share by dividing earnings allocated to common stockholders by the weighted average number of common shares outstanding for the period.

Diluted weighted average shares is computed using basic weighted average shares plus any potentially dilutive securities outstanding during the period using the if-converted method and treasury-stock-type method, except when their effect is anti-dilutive. Potentially dilutive securities include stock options, restricted stock units, senior convertible debentures, amended warrants associated with the CSO2015, and the Upfront Warrants held by Total. As a result of the net loss from continuing operations for the three months ended March 31, 2013 and December 30, 2012 there is no dilutive impact to the net loss per share calculation for the period.

The following table presents the calculation of basic and diluted net loss per share:

	Three Months Ended
(In thousands, except per share amounts)	March 31, 2013			April 1, 2012
Basic and Diluted net loss per share:
Numerator:  Net loss available to common stockholders	$	(54,696	)	$	(74,530	)
Denominator: Basic and diluted weighted-average common shares	119,553			111,785
Basic and diluted net loss per share	$	(0.46	)	$	(0.67	)

Holders of the Company's 4.75% debentures may convert the debentures into shares of the Company's common stock, at the applicable conversion rate, at any time on or prior to maturity. The 4.75% debentures are included in the calculation of diluted net income per share if their inclusion is dilutive under the if-converted method. During both the three months ended March 31, 2013 and December 30, 2012, there were zero dilutive potential common shares under the 4.75% debentures.

Holders of the Company's 0.75% debentures may, under certain circumstances at their option, convert the debentures into cash and, if applicable, shares of the Company's common stock at the applicable conversion rate, at any time on or prior to maturity. The 0.75% debentures are included in the calculation of diluted net income per share if their inclusion is dilutive under the treasury-stock-type method. The Company's average stock price during the three months ended March 31, 2013 and December 30, 2012 did not exceed the conversion price for the 0.75% debentures. Under the treasury-stock-type method, the Company's 0.75% debentures will generally have a dilutive impact on net income per share if the Company's average stock price for the period exceeds the conversion price for the debentures.

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Holders of the Company's 4.50% debentures may, under certain circumstances at their option, convert the debentures into cash, and not into shares of the Company's common stock (or any other securities). Therefore, the 4.50% debentures are excluded from the net income per share calculation.

Holders of the amended and restated Warrants under the CSO2015, upon exercise of the 4.50% Warrants, may acquire up to 11.1 million shares of the Company's common stock at an exercise price of $24.00 (see Note 9). If the market price per share of the Company's common stock for the period exceeds the established strike price, the 4.50% Warrants will have a dilutive effect on its diluted net income per share using the treasury-stock-type method.

The Upfront Warrants, issued on February 28, 2012, allow Total to acquire up to 9,531,677 shares of the Company's common stock at an exercise price of $7.8685. If the market price per share of the Company's common stock for the period exceeds the established strike price, the Upfront Warrants will have a dilutive effect on its diluted net income per share using the treasury-stock-type method.

The following is a summary of outstanding anti-dilutive potential common stock which was excluded from income per diluted share in the following periods:

	As of
(In thousands)	March 31, 2013 (1)	April 1, 2012 (1)
Stock options	313	410
Restricted stock units	5,687	4,413
Warrants (under the CSO2015)	*	*
Upfront Warrants (held by Total)	9,532	**
4.75% debentures	8,712	8,712
0.75% debentures	*	*

(1) As a result of the net loss per share for the three months ended March 31, 2013 and April 1, 2012, the inclusion of all potentially dilutive stock options, restricted stock units, and common shares under the 4.75% debentures would be anti-dilutive. Therefore, those stock options, restricted stock units and shares were excluded from the computation of the weighted-average shares for diluted net loss per share for such period.

* The Company's average stock price during the three months ended March 31, 2013 and April 1, 2012 did not exceed the conversion price for the amended warrants (under the CSO2015) and 0.75% debentures and those instruments were thus non-dilutive in such periods.

** The Upfront Warrants were issued in the first quarter of fiscal 2012. The Company's stock price as of the last business day of the first quarter of fiscal 2012 did not exceed the exercise price of the Upfront Warrants.

Note 13. STOCK-BASED COMPENSATION

The following table summarizes the consolidated stock-based compensation expense by line item in the Condensed Consolidated Statements of Operations:

	Three Months Ended
(In thousands)	March 31, 2013		April 1, 2012
Cost of Americas revenue	$	778	$	1,129
Cost of EMEA revenue	441		965
Cost of APAC revenue	491		265
Research and development	1,122		1,780
Sales, general and administrative	5,684		8,402
Total stock-based compensation expense	$	8,516	$	12,541

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The following table summarizes the consolidated stock-based compensation expense by type of awards:

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012
Employee stock options	$	—		$	326
Restricted stock units	8,811			13,574
Change in stock-based compensation capitalized in inventory	(295		)	(1,359		)
Total stock-based compensation expense	$	8,516		$	12,541

Note 14. SEGMENT INFORMATION

The Company's President and Chief Executive Officer, as the CODM, has organized the Company, manages resource allocations and measures performance of the Company's activities among these three regional segments: (i) the Americas Segment, (ii) the EMEA Segment, and (iii) the APAC Segment. The Americas Segment includes both North and South America. The EMEA Segment includes European countries, as well as the Middle East and Africa. The APAC segment includes all Asia-Pacific countries.

The CODM assesses the performance of the three regional segments using information about their revenue and gross margin after certain adjustments to reflect the substance of the revenue transactions for certain utility and power plant projects, and adding back certain non-cash expenses such as stock-based compensation expense and interest expense, as well as other items including loss on change in European government incentives, accelerated depreciation associated with the Company's manufacturing step reduction program, and amortization of other intangible assets. The CODM does not review asset information by segment.

The following tables present revenue by segment, cost of revenue by segment and gross margin by segment and revenue by significant customer. Revenue is based on the destination of the shipments.

	Three Months Ended
(In thousands):	March 31, 2013		April 1, 2012
Revenue
Americas	$	484,122	$	281,493
EMEA	68,652		156,110
APAC	82,659		56,528
Total Revenue	635,433		494,131
Cost of revenue
Americas	416,081		242,119
EMEA	91,494		156,845
APAC	68,545		49,919
Total cost of revenue	576,120		448,883
Gross margin	$	59,313	$	45,248

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	Three Months Ended
	March 31, 2013		April 1, 2012
Revenue by region (in thousands):
Americas (as reviewed by CODM)	$	423,321	$	367,696
Utility and power plant projects	60,801		(86,203		)
Americas	$	484,122	$	281,493
EMEA (as reviewed by CODM)	$	68,652	$	155,917
Other	—		193
EMEA	$	68,652	$	156,110
APAC	$	82,659	$	56,528

Cost of revenue by region (in thousands):
Americas (as reviewed by CODM)	$	285,785	$	306,880
Utility and power plant projects	128,939		(70,445		)
Stock-based compensation expense	778		1,129
Non-cash interest expense	220		218
Other	359		4,337
Americas	$	416,081	$	242,119
EMEA (as reviewed by CODM)	$	90,738	$	151,423
Stock-based compensation expense	441		965
Non-cash interest expense	129		176
Other	186		4,281
EMEA	$	91,494	$	156,845
APAC (as reviewed by CODM)	$	67,617	$	48,309
Stock-based compensation expense	491		265
Non-cash interest expense	179		65
Other	258		1,280
APAC	$	68,545	$	49,919

Gross margin by region:
Americas (as reviewed by CODM)	32	%	17	%
EMEA (as reviewed by CODM)	(32	)%	3	%
APAC (as reviewed by CODM)	18	%	15	%
Americas	14	%	14	%
EMEA	(33	)%	0	%
APAC	17	%	12	%

Depreciation by region (in thousands):
Americas	$	9,815	$	14,061
EMEA	5,833		10,967
APAC	7,972		4,043

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		Three Months Ended
(As a percentage of total revenue)		March 31, 2013		April 1, 2012
Significant Customers:	Business Segment
NRG Solar, Inc.	Americas	44	%	23	%
MidAmerican Energy Holdings Company	Americas	13	%	*

* denotes less than 10% during the period

Note 15. SUBSEQUENT EVENTS

On April 4, 2013, the Company repaid $100.0 million of outstanding obligations under the revolving credit facility with Credit Agricole. Subsequent to this repayment, the Company had no outstanding obligations under this credit facility.

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ITEM 2: MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Cautionary Statement Regarding Forward-Looking Statements

This Quarterly Report on Form 10-Q contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements are statements that do not represent historical facts and the assumptions underlying such statements. We use words such as "anticipate," "believe," "continue," "could," "estimate," "expect," "intend," "may," "plan," "predict," "potential," "will," "would," "should," and similar expressions to identify forward-looking statements. Forward-looking statements in this Quarterly Report on Form 10-Q include, but are not limited to, our plans and expectations regarding future financial results, expected operating results, business strategies, projected costs and cost reduction, products, ability to monetize utility projects, competitive positions, management's plans and objectives for future operations, the sufficiency of our cash and our liquidity, our ability to obtain financing, the availability of credit and liquidity support from Total S.A. under the Credit Support Agreement and Liquidity Support Agreement, the ability to comply with debt covenants and cure any defaults, trends in average selling prices, the success of our joint ventures and acquisitions, expected capital expenditures, warranty matters, outcomes of litigation, our exposure to foreign exchange, interest and credit risk, general business and economic conditions, industry trends, impact of changes in government incentives, expected restructuring charges, and the likelihood of any impairment of project assets, long-lived assets and intangible assets. These forward-looking statements are based on information available to us as of the date of this Quarterly Report on Form 10-Q and current expectations, forecasts and assumptions and involve a number of risks and uncertainties that could cause actual results to differ materially from those anticipated by these forward-looking statements. Such risks and uncertainties include a variety of factors, some of which are beyond our control. Please see "Part II. Item 1A: Risk Factors" herein and our other filings with the Securities and Exchange Commission ("SEC"), including our Annual on Form 10-K for the year ended December 30, 2012 as amended (the "fiscal 2012 Form 10-K"), for additional information on risks and uncertainties that could cause actual results to differ. These forward-looking statements should not be relied upon as representing our views as of any subsequent date, and we are under no obligation to, and expressly disclaim any responsibility to, update or alter our forward-looking statements, whether as a result of new information, future events or otherwise.

The following information should be read in conjunction with the Condensed Consolidated Financial Statements and the accompanying Notes to Condensed Consolidated Financial Statements included in this Quarterly Report on Form 10-Q. Our fiscal year ends on the Sunday closest to the end of the applicable calendar year. All references to fiscal periods apply to our fiscal quarter or year which ends on the Sunday closest to the calendar month end.

Corporate History

We were originally incorporated in California in 1985 and subsequently reincorporated in Delaware during 2005 in connection with our initial public offering. In November 2011, our stockholders approved the reclassification of all outstanding former class A common stock and class B common stock into a single class of common stock listed on the Nasdaq Global Select Market under the symbol "SPWR". In June 2011, we became a subsidiary of Total Gas & Power USA, SAS (“Total”), a subsidiary of Total S.A. ("Total S.A."). Total acquired 60% of our former class A and class B common stock as of June 13, 2011. In January 2012, we entered into an additional agreement with Total to sell shares of our common stock, thereby increasing Total's ownership to approximately 66% of our outstanding common stock.

Company Overview

We are a vertically integrated solar products and solutions company that designs, manufactures and delivers high-performance solar systems worldwide, serving as a one-stop shop for residential, commercial, and utility-scale power plant customers. Of all the solar cells available for the mass market, we believe our solar cells have the highest conversion efficiency, a measurement of the amount of sunlight converted by the solar cell into electricity.

We believe that there are several factors that set us apart when compared with various competitors:

– A go-to-market platform that is broad and deep, given our more than eight years in rooftop and ground mount channels, including turn-key systems:

• High performance delivered by enhancing energy delivery and financial return through systems technology design;

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• Cutting edge systems designed to meet customer needs and reduce cost, including non-penetrating, fast roof installation technologies; and

• Expanded reach enhanced by Total S.A.'s long-established presence in many countries where significant solar installation goals are being established;

– A technological advantage which includes being the only solar company manufacturing back-contact, back-junction cells, and our modules producing more electricity, lasting longer and degrading more slowly:

• Superior performance, including the ability to generate up to 50% more power per unit area than conventional solar cells;

• Superior aesthetics, with our uniformly black surface design that eliminates highly visible reflective grid lines and metal interconnection ribbons;

• Superior reliability, as confirmed by multiple independent reports and internal reliability data;

• Superior energy production per rated watt of power, as confirmed by multiple independent reports;

• The ability to transport more KW per pound using less packaging, resulting in lower distribution costs; and

• More efficient use of silicon, a key raw material used in the manufacture of solar cells;

– Costs that are decreasing faster and more steadily as a result of an aggressive, but we believe achievable, cost reduction plan as well as value that benefits all customers:

• We offer a significantly lower area-related cost structure for our customers because our solar panels require a substantially smaller roof or land area than conventional solar technology and half or less of the roof or land area of many commercial solar thin film technologies;

• Through our leasing program, customers can get high efficiency solar products for no money down at competitive energy rates; and

• Solar power systems designed to generate electricity over a system life typically exceeding 25 years; and

– Strong balance sheet backed by Total S.A. that gives us an advantage in today's challenging environment.

Segments Overview

We manage resource allocations and measure performance among three regional segments: (i) the Americas Segment, (ii) the EMEA Segment, and (iii) the APAC Segment. The Americas Segment includes both North and South America. The EMEA Segment includes European countries, as well as the Middle East and Africa. The APAC segment includes all Asia-Pacific countries.

Seasonal Trends

Our business is subject to industry-specific seasonal fluctuations. Sales have historically reflected these seasonal trends with the largest percentage of total revenues realized during the last two calendar quarters of a fiscal year. Lower seasonal demand normally results in reduced shipments and revenues in the first two calendar quarters of a fiscal year. There are various reasons for this seasonality, mostly related to economic incentives and weather patterns. For example, in European countries with feed-in tariffs, the construction of solar power systems may be concentrated during the second half of the calendar year, largely due to the fact that the coldest winter months in the Northern Hemisphere are January through March. In the United States, customers will sometimes make purchasing decisions towards the end of the year in order to take advantage of tax credits or for other budgetary reasons. In addition, sales in the new home development market are often tied to construction market demands which tend to follow national trends in construction, including declining sales during cold weather months.

Unit of Power

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When referring to our facilities’ manufacturing capacity, total sales and components sales, the unit of electricity in watts for kilowatts ("KW"), megawatts ("MW") and gigawatts ("GW") is direct current ("dc"). When referring to our solar power systems, the unit of electricity in watts for KW, MW, and GW is alternating current ("ac").

Levelized Cost of Energy ("LCOE")

The LCOE equation is an evaluation of the life-cycle energy cost and life-cycle energy production of an energy producing system. It allows alternative technologies to be compared when different scales of operation, investment, or operating time periods exist. It captures capital costs and ongoing system-related costs, along with the amount of electricity produced, and converts them into a common metric. Key drivers for LCOE reduction for photovoltaic products include panel efficiency, capacity factors, reliable system performance, and the life of the system.

Fiscal Years

We have a 52-to-53-week fiscal year that ends on the Sunday closest to December 31. Accordingly, every fifth or sixth year will be a 53-week fiscal year. Both fiscal years 2013 and 2012 are 52-week fiscal years. The first quarter of fiscal 2013 ended on March 31, 2013, while the first quarter of fiscal 2012 ended on April 1, 2012. Both the first quarter of fiscal 2013 and fiscal 2012 were 13-week quarters.

Outlook

During fiscal 2012 and 2011 we saw a decline in overall demand for solar systems, primarily in Europe, as a result of the decline in European government incentives. The resulting over-supply environment drove down average selling prices across all product and service lines. Pricing pressures are expected to generally continue throughout fiscal 2013.

We further are focused on reducing the cost of our solar panels and systems and are working with our suppliers and partners along all steps of the value chain to reduce costs by improving manufacturing technologies and expanding economies of scale. We continue to emphasize improvement of our solar cell efficiency and LCOE performance through enhancement of our existing products, development of new products and reduction of manufacturing cost and complexity in conjunction with our overall cost-control strategies.

We plan to continue to expand our business in growing and sustainable markets. In fiscal 2012 we announced the first commercial deployment of our SunPower® C-7 Tracker technology under a power purchase agreement ("PPA") and commenced commercial production of our next generation solar cell with demonstrated efficiencies of up to 24%. During the first quarter of fiscal 2013 we launched our SunPower X-Series Solar Panels, a new panel line for the residential market with demonstrated efficiencies of up to 21.5%.

Residential Leasing Program

In fiscal 2011, we launched our residential lease program with dealers in the United States, in partnership with a third-party financial institution, which allows customers to obtain SunPower systems under lease agreements up to 20 years, subject to financing availability. We have entered into multiple facilities with financial institutions that will provide financing to support additional residential solar lease projects. The program includes system maintenance and warranty coverage as well as an early buy-out option after six years or at any time when the lessees sell their home. Leases are classified as either operating or sales-type leases in accordance with the relevant accounting guidelines.

The program does not yet represent a material portion of our revenue. However, we may face additional material risks as the program expands, including our ability to obtain additional financing partners as well as our ability to collect finance and rent receivables in view of the general challenging credit markets worldwide. We believe that our concentration of credit risk is limited because of our large number of customers, credit quality of the customer base, small account balances for most of these customers, and customer geographic diversification. We have applied and will apply for the §48(c) solar commercial investment tax credit ("ITC") and Treasury Grant payments under Section 1603 of the American Recovery and Reinvestment Act (the "Cash Grant"), which is administered by the U.S. Internal Revenue Services ("IRS") and Treasury Department, for residential leases. We have structured the tax incentive applications, both in timing and amount, to be in accordance with the guidance provided by Treasury and IRS. If the amount or timing of the ITC or Cash Grant payments received in connection with the residential lease program varies from what we have projected, this may impact our revenues and margins and we may have to recognize losses, which may adversely impact our results of operations and cash flows. We make certain assumptions in accounting for the residential lease program, including, among others, the residual value of the leased systems. As the

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residential lease program grows, if the residual value of leased systems does not materialize as assumed, our results of operations would be adversely affected.

Results of Operations

Revenue

	Three Months Ended
(In thousands)	March 31, 2013		April 1, 2012		% Change
Americas	$	484,122	$	281,493	72%
EMEA	68,652		156,110		(56)%
APAC	82,659		56,528		46%
Total revenue	$	635,433	$	494,131	29%

Total Revenue:  Our total revenue increased $141.3 million, or 29%, during the three months ended March 31, 2013 as compared to the three months ended April 1, 2012 primarily due to revenue recognized on large scale utility projects in North America partially offset by a decline in utility-scale solar projects and related revenue within the EMEA region. We recognized revenue on 172.8 MW in the three months ended March 31, 2013 as compared to 195.7 MW in the three months ended April 1, 2012, representing a 46% increase in revenue per watt, primarily resulting from timing of revenue recognition on certain large utility-scale projects under construction in North America.

Concentrations: Sales outside the Americas Segment represented approximately 24% and 43% of total revenue in each of the three months ended March 31, 2013 and April 1, 2012, respectively. The increase in percentage of sales within the Americas Segments was primarily due to increasing demand in the United States for our solar power products within the residential, commercial, and utility sectors and the commencement of revenue recognition on additional large scale utility projects in North America, coupled with a slowdown in project development and component shipments in Europe due to reductions in government incentives and decline in the overall European economy.

The table below represents our significant customers which accounted for greater than 10 percent of total revenue in each of the three months ended March 31, 2013 and April 1, 2012, respectively.

		Three Months Ended
Revenue		March 31, 2013		April 1, 2012
Significant Customers:	Business Segment
NRG Solar, Inc.	Americas	44	%	23	%
MidAmerican Energy Holdings Company	Americas	13	%	*

*    denotes less than 10% during the period

Americas Revenue: Americas revenue increased 72% during the three months ended March 31, 2013 as compared to the three months ended April 1, 2012 primarily as a result of an increase in the number and size of the various utility-scale solar power systems under construction, which includes revenue recognition on the 250 MW California Valley Solar Ranch ("CVSR") project in San Luis Obispo County, California; the 579 MW Antelope Valley Solar Projects ("AVSP") in California; and a 5 MW project in Hawaii during the first quarter of fiscal 2013. This increase was partially offset by projects which were substantially completed during the interim period as well as a decrease in component sales within the region.

EMEA Revenue:  EMEA revenue decreased 56% during the three months ended March 31, 2013 as compared to the three months ended April 1, 2012 primarily due to the decline in utility-scale solar projects and related revenue as well as a decrease in volume of component sales.

APAC Revenue: APAC revenue increased 46% during the three months ended March 31, 2013 as compared to the three months ended April 1, 2012 primarily driven by additional component sales in Japan, which increased 130% in volume period over period. This was partially offset by declines in average selling prices.

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Cost of Revenue

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012			% Change
Americas	$	416,081		$	242,119		72%
EMEA	91,494			156,845			(42)%
APAC	68,545			49,919			37%
Total cost of revenue	$	576,120		$	448,883		28%
Total cost of revenue as a percentage of revenue	91		%	91		%
Total gross margin percentage	9		%	9		%

Total Cost of Revenue: Our total cost of revenue increased $127.2 million, or 28%, during the three months ended March 31, 2013 as compared to the three months ended April 1, 2012 primarily as a result of an increase in the number and size of the various utility-scale solar power systems under construction in North America and timing of recognition. These increases were partially offset by an overall decrease in material costs.

Gross Margin

	Three Months Ended
(In thousands)	March 31, 2013	April 1, 2012	% Change
Americas	14%	14%	0%
EMEA	(33)%	0%	(33)%
APAC	17%	12%	5%

Americas Gross Margin: Gross margin for our Americas Segment was 14% during both the three months ended March 31, 2013 and April 1, 2012. Gross margin remained flat period over period as a result of increased revenue from large utility-scale solar power systems under construction combined with lower material costs, offset by industry declines in average selling prices.

EMEA Gross Margin: Gross margin for our EMEA Segment decreased during the three months ended March 31, 2013 as compared to the three months ended April 1, 2012 as a result of declines in government incentives resulting in changes in market demand. The changes in demand, general financing constraints experienced in the European economy, and the over-supply environment continued to significantly drive down average selling prices throughout the region at a rate greater than reductions of material and other costs.

APAC Gross Margin: Gross margin for our APAC Segment increased 5% during the three months ended March 31, 2013 as compared to the three months ended April 1, 2012 as a result of additional component sales in Japan as well as lower material costs, partially offset by declines in average selling prices.

Research and Development ("R&D")

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012			% Change
R&D Expense	$	13,170		$	16,726		(21)%
As a percentage of revenue	2		%	3		%

R&D expense decreased $3.6 million or 21% in the three months ended March 31, 2013 as compared to the three months ended April 1, 2012 primarily a result of additional costs incurred in the first quarter of fiscal 2012 associated with the implementation of our manufacturing step reduction program included as part of our cost reduction roadmap, partially offset by additional labor costs in the first quarter of fiscal 2013 due to increased headcount and salary related expenses.

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Sales, General and Administrative ("SG&A")

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012			% Change
Total SG&A	$	70,092		$	76,194		(8)%
As a percentage of revenue	11		%	15		%

SG&A expense decreased $6.1 million, or 8%, during the three months ended March 31, 2013 as compared to the three months ended April 1, 2012 primarily as a result of our cost-control strategy implemented in response to the changes in the European market and resulting restructuring activities, including the overall reduction of consulting charges in Europe and the United States. Additionally contributing to the reduction in SG&A expense was decreased stock compensation expense due to lower valuation of stock grants as a result of the decline in our share price during fiscal 2012.

Restructuring Charges

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012			% Change
October 2012 Plan	$	(578	)	$	—		100%
Legacy Restructuring Plans	241			3,046			(92)%
Restructuring charges	$	(337	)	$	3,046
As a percentage of revenue	—		%	1		%

Total restructuring charges decreased $3.4 million in the three months ended March 31, 2013 as compared to three months ended April 1, 2012 due to the substantial completion of the activities associated with legacy restructuring plans approved in fiscal 2012 and 2011.

October 2012 Plan: On October 12, 2012, our Board of Directors approved a reorganization (the "October 2012 Plan") to accelerate operating cost reduction and improve overall operating efficiency. In connection with the October 2012 Plan, which is expected to be completed within the twelve months following approval, we expect to eliminate approximately 900 positions primarily in the Philippines, representing approximately 15% of our global workforce. As a result, we expect to record restructuring charges totaling $33.0 million to $40.0 million, related to all segments. Such charges are composed of severance benefits, lease and related termination costs, and other associated costs, $30.2 million of which were recorded in the fourth quarter of fiscal 2012. We expect greater than 90% of these charges to be cash.

Legacy Restructuring Plans: During fiscal 2012 and 2011, we implemented approved restructuring plans, related to all segments, to align with changes in the global solar market which included the consolidation of our Philippine manufacturing operations as well as actions to accelerate operating cost reduction and improve overall operating efficiency. These restructuring activities were substantially complete as of March 31, 2013. The Company expects to continue to incur restructuring costs as it revises previous estimates in connection with these plans. Revisions to estimates will primarily be due to changes in assumptions associated with lease and related termination costs.

See Note 6 of our Notes to Condensed Consolidated Financial Statements for further information regarding our restructuring plans.

Other Income (Expense), Net

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012			% Change
Interest income	$	255		$	342		(25)%
Interest expense	(27,034		)	(18,701		)	45%
Other, net	(8,256		)	(672		)	1,129%
Other income (expense), net	$	(35,035	)	$	(19,031	)	84%
As a percentage of revenue	(6		)%	(4		)%

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Other expense, net increased $16.0 million, or 84%, in the three months ended March 31, 2013 as compared to the three months ended April 1, 2012. The overall increase was primarily driven by (i) an $8.3 million increase in interest expense primarily due to additional non-cash interest expense as a result of amortization expense recorded for warrants issued to Total in connection with the Liquidity Support Agreement executed on February 28, 2012; (ii) a $4.7 million charge related to an impairment of our investment in an unconsolidated investee; (iii) a $2.1 million net unfavorable change in derivatives and foreign exchange resulting from expensing the time value of option contracts and forward points on forward exchange contracts of effective cash flow hedges; and (iv) an increase in other net expense of $0.9 million.

Income Taxes

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012			% Change
Provision for income taxes	$	(2,989	)	$	(1,356	)	120%
As a percentage of revenue	—		%	—		%

In the three months ended March 31, 2013, our income tax provision of $3.0 million, on a loss before income taxes and equity in losses of unconsolidated investees of $58.6 million, was due to foreign income in certain jurisdictions where our operations were profitable as well as minimum taxes. In the three months ended April 1, 2012, our income tax provision of $1.4 million, on a loss before income taxes and equity in losses of unconsolidated investees of $69.7 million, was due to foreign income in certain jurisdictions where our operations were profitable.

A material amount of our total revenue is generated from customers located outside of the United States, and a substantial portion of our assets and employees are located outside of the United States. United States income taxes and foreign withholding taxes have not been provided on the undistributed earnings of our non-United States subsidiaries as such earnings are intended to be indefinitely reinvested in operations outside the United States to extent that such earnings have not been currently or previously subjected to taxation of the United States.

We record a valuation allowance to reduce our United States and French deferred tax assets to the amount that is more likely than not to be realized. In assessing the need for a valuation allowance, we consider historical levels of income, expectations and risks associated with the estimates of future taxable income and ongoing prudent and feasible tax planning strategies. In the event we determine that we would be able to realize additional deferred tax assets in the future in excess of the net recorded amount, or if we subsequently determine that realization of an amount previously recorded is unlikely, we would record an adjustment to the deferred tax asset valuation allowance, which would change income tax in the period of adjustment. As of March 31, 2013, we believe there is insufficient evidence to realize additional deferred tax assets in fiscal 2013.

Equity in Loss of Unconsolidated Investees

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012			% Change
Equity in loss of unconsolidated investees	$	(333	)	$	(3,425	)	(90)%
As a percentage of revenue	(0.1		)%	0.7		%

Our equity in earnings of unconsolidated investees for the three months ended March 31, 2013 and April 1, 2012 was a net loss of $0.3 million and net loss of $3.4 million, respectively. The decrease in net loss period over period is primarily attributable to the sale of our remaining equity ownership in Woongjin Energy during first quarter of fiscal 2012.

Net Loss

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012			% Change
Net loss	$	(54,696	)	$	(74,530	)	(27)%

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Net loss decreased $19.8 million, or 27%, in the three months ended March 31, 2013 as compared to the three months ended April 1, 2012. The decrease in net loss is primarily driven by: (i) a $14.1 million increase in gross margin primarily due to an increase in the number and size of the various utility-scale solar power systems under construction in North America and timing of recognition, and (ii) a $13.0 million decrease in operating expenses attributable to our cost-control strategy implemented in response to the changes in the European market and resulting restructuring activities in fiscal 2012. Information about other significant variances in our results of operations is described above.

Net loss attributable to noncontrolling interest

	Three Months Ended
(In thousands)	March 31, 2013		April 1, 2012		% Change
Net loss attributable to noncontrolling interest	$	7,273	$	—	100	%

In the first quarter of fiscal 2013, we entered into a facility with a third-party investor under which the investor was determined to hold a noncontrolling interest in one of our consolidated subsidiaries. We attribute the net assets of the less than wholly owned subsidiary to the controlling and noncontrolling interests under the hypothetical liquidation at book value method as this method most closely mirrors the economics of the governing contractual arrangements. We allocate recorded income (loss) to each investor based on the change, during the reporting period, of the amount of net assets each investor is entitled to under the governing contractual arrangements in a liquidation scenario.

Liquidity and Capital Resources

Cash Flows

A summary of the sources and uses of cash and cash equivalents is as follows:

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012
Net cash provided by (used in) operating activities	$	166,863		$	(120,708	)
Net cash provided by (used in) investing activities	(35,922		)	13,060
Net cash used in financing activities	(81,899		)	(317,686		)

Operating Activities

Net cash provided by operating activities in the three months ended March 31, 2013 was $166.9 million and was primarily the result of: (i) decrease of $197.5 million in prepaid expense and other assets primarily related to deferred costs associated with several large utility-scale solar projects under construction in North America; (ii) decrease of $60.3 million in accounts receivable; and (iii) $50.3 million of non-cash charges primarily attributable to depreciation and amortization, non-cash interest and stock compensation expense. This was partially offset by (i) a net loss of $62.0 million, and (ii) an increase of $79.2 million in other operating assets, net of changes to operating liabilities.

Net cash used in operating activities in the three months ended April 1, 2012 was $120.7 million and was primarily the result of: (i) a net loss of $74.5 million; (ii) increase in inventories and project assets of $125.6 million for construction of future and current projects primarily in North America; (iii) increases in prepaid expense and other assets of $67.5 million primarily related to deferred costs associated with the construction of the 250 MW California Solar Valley Ranch project as well as deferred costs associated with the build of systems under our residential leasing program; and (iv) an increase in advance to suppliers of $15.7 million. This was partially offset by (i) a decrease in accounts receivable of $87.7 million; (ii) non-cash impairment changes of $9.0 million related to the write-down of third party inventory; (iii) other non-cash charges of $53.6 million primarily related to depreciation and amortization, stock based compensation, and non-cash interest charges; and (iv) an increase of $12.3 million in other operating liabilities, net of changes to operating assets.

Investing Activities

Net cash used in investing activities in the three months ended March 31, 2013 was $35.9 million, which included $53.7 million related to costs associated with solar power systems leased and to be leased, as well as capital expenditures primarily associated with improvements to our current generation solar cell manufacturing technology. This was partially offset by $17.8

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million of restricted cash released back to us due to expirations of fully cash-collateralized letter of credits under the September 2011 Letter of Credit Facility with Deutsche Bank Trust and transition of outstanding letter of credits into the August 2011 Deutsche Bank facility under which payment of obligations is guaranteed by Total S.A.

Net cash provided by investing activities in the three months ended April 1, 2012 was $13.1 million, which included: (i) $43.9 million of restricted cash released back to us due to expirations of fully cash-collateralized letter of credits under the September 2011 Letter of Credit Facility with Deutsche Bank Trust and transition of outstanding letter of credits into the August 2011 Deutsche Bank facility under which payment of obligations is guaranteed by Total S.A.; (ii) $17.4 million in proceeds from the sale of our equity interest in Woongjin Energy on the open market; and (iii) $0.4 million in proceeds from the sale of equipment to a third-party. This was partially offset by (i) $32.8 million related to capital expenditures primarily associated with improvements to our current generation solar cell manufacturing technology, leasehold improvements associated with our San Jose, California office, and the build out of our new solar panel assembly facility in Mexicali, Mexico, and other projects and (ii) $15.9 million in costs associated with solar power systems leased and to be leased.

Financing Activities

Net cash used in financing activities in the three months ended March 31, 2013 was $81.9 million, made up of: (i) repayments of $180.5 million of our outstanding borrowings primarily under the Credit Agricole revolving credit facility, and (ii) $10.7 million in purchases of stock for tax withholding obligations on vested restricted stock. This was partially offset by (i) $39.1 million of financing proceeds associated with our residential lease program; (ii) $33.9 million of proceeds associated with a sale leaseback financing arrangement; (iii) $24.1 million from project loans; and (iv) $12.3 million of contributions from a noncontrolling interest.

Net cash used in financing activities in the three months ended April 1, 2012 of $317.7 million reflects cash received of: (i) $178.3 million of cash distributions in connection with the transfer of entities under common control; (ii) $198.6 million paid to fully repurchase the outstanding 1.25% convertible debentures; (iii) repayment of $100.6 million of our outstanding balance under the Credit Agricole revolving credit facility and capital lease obligations; and (iv) $3.9 million in purchases of stock for tax withholding obligations on vested restricted stock. Cash used in financing activities was partially offset by $163.7 million in proceeds from the sale of 18.6 million shares of our common stock to Total.

Debt and Credit Sources

Convertible Debentures

As of both March 31, 2013 and December 30, 2012, an aggregate principal amount of $250.0 million of the 4.50% debentures remain issued and outstanding. Interest on the 4.50% debentures is payable on March 15 and September 15 of each year. The 4.50% debentures mature on March 15, 2015. The 4.50% debentures are convertible only into cash, and not into shares of our common stock (or any other securities). Prior to December 15, 2014, the 4.50% debentures are convertible only upon specified events and, thereafter, they will be convertible at any time, based on an initial conversion price of $22.53 per share of our common stock. The conversion price will be subject to adjustment in certain events, such as distributions of dividends or stock splits. Upon conversion, we will deliver an amount of cash calculated by reference to the price of our common stock over the applicable observation period. We may not redeem the 4.50% debentures prior to maturity. Holders may also require us to repurchase all or a portion of their 4.50% debentures upon a fundamental change, as defined in the debenture agreement, at a cash repurchase price equal to 100% of the principal amount plus accrued and unpaid interest. In the event of certain events of default, such as our failure to make certain payments or perform or observe certain obligations thereunder, Wells Fargo, the trustee, or holders of a specified amount of then-outstanding 4.50% debentures will have the right to declare all amounts then outstanding due and payable. Concurrent with the issuance of the 4.50% debentures, we entered into privately negotiated convertible debenture hedge transactions and warrant transactions which represent a call spread overlay with respect to the 4.50% debentures (the "CSO2015"), assuming full performance of the counterparties and 4.50% Warrants strike prices in excess of the conversion price of the 4.50% debentures.  Please see "Conversion of our outstanding 4.75% debentures, our warrants related to our outstanding 4.50% and 4.75% debentures, and future substantial issuances or dispositions of our common stock or other securities, could dilute ownership and earnings per share or cause the market price of our stock to decrease." in "Part I. Item 1A: Risk Factors" in our fiscal 2012 Form 10-K.

As of both March 31, 2013 and December 30, 2012, an aggregate principal amount of $230.0 million of the 4.75% senior convertible debentures ("4.75% debentures") remain issued and outstanding. Interest on the 4.75% debentures is payable on April 15 and October 15 of each year. Holders of the 4.75% debentures are able to exercise their right to convert the debentures at any time into shares of our common stock at a conversion price equal to $26.40 per share. The applicable conversion rate may adjust in certain circumstances, including upon a fundamental change, as defined in the indenture

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governing the 4.75% debentures. If not earlier converted, the 4.75% debentures mature on April 15, 2014. Holders may also require us to repurchase all or a portion of their 4.75% debentures upon a fundamental change at a cash repurchase price equal to 100% of the principal amount plus accrued and unpaid interest. In the event of certain events of default, such as our failure to make certain payments or perform or observe certain obligations thereunder, Wells Fargo, the trustee, or holders of a specified amount of then-outstanding 4.75% debentures will have the right to declare all amounts then outstanding due and payable. Concurrent with the issuance of the 4.75% debentures, we entered into certain convertible debenture hedge transactions (the "4.75% Bond Hedge") and warrant transactions (the "4.75% Warrants") with affiliates of certain of the underwriters of the 4.75% debentures.  Please see "Conversion of our outstanding and 4.75% debentures, our warrants related to our outstanding 4.50% and 4.75% debentures, and future substantial issuances or dispositions of our common stock or other securities, could dilute ownership and earnings per share or cause the market price of our stock to decrease." in "Part I. Item 1A: Risk Factors" in our fiscal 2012 Form 10-K.

Mortgage Loan Agreement with IFC

On May 6, 2010, we entered into a mortgage loan agreement with IFC. Under the loan agreement, we may borrow up to $75.0 million during the first two years, and are required to repay the amount borrowed, starting 2 years after the date of borrowing, in 10 equal semiannual installments over the following 5 years. On October 3, 2012, IFC granted a temporary waiver of a financial covenant for the fourth quarter of fiscal 2012 through the fourth quarter of fiscal 2013. Subsequent to the waiver, we are required to pay interest of LIBOR plus 3% per annum on outstanding borrowings through January 5, 2013; interest of LIBOR plus 4.25% per annum on outstanding borrowings from January 6, 2013 through September 30, 2013; interest of LIBOR plus 5% per annum on outstanding borrowings from October 1, 2013 through January 5, 2014; a front-end fee of 1% on the principal amount of borrowings at the time of borrowing; and a commitment fee of 0.5% per annum on funds available for borrowing and not borrowed. If we utilize the waiver for the fourth quarter of 2013, the 2013 rates would continue to apply in 2014. If we do not need to utilize the waiver, we are required to pay interest of LIBOR plus 3% per annum on outstanding borrowings; a front-end fee of 1% on the principal amount of borrowings at the time of borrowing; and a commitment fee of 0.5% per annum on funds available for borrowing and not borrowed. We may prepay all or a part of the outstanding principal, subject to a 1% prepayment premium. We have pledged certain assets as collateral supporting repayment obligations.

As of March 31, 2013 and December 30, 2012, we had $70.0 million and $75.0 million, respectively, outstanding under the mortgage loan agreement. Additionally, in accordance with the terms of the mortgage loan agreement, we are required to establish a debt service reserve account which shall contain the amount, as determined by IFC, equal to the aggregate principal and interest due on the next succeeding interest payment date after such date.

As of March 31, 2013 and December 30, 2012, we had restricted cash and cash equivalents of $9.2 million and $6.4 million, respectively, related to the IFC debt service reserve.

Loan Agreement with California Enterprise Development Authority ("CEDA")

On December 29, 2010, we borrowed from CEDA the proceeds of the $30.0 million aggregate principal amount of CEDA's tax-exempt Recovery Zone Facility Revenue Bonds (SunPower Corporation - Headquarters Project) Series 2010 (the "Bonds") maturing April 1, 2031 under a loan agreement with CEDA. Certain of our obligations under the loan agreement were contained in a promissory note dated December 29, 2010 issued by us to CEDA, which assigned the promissory note, along with all right, title and interest in the loan agreement, to Wells Fargo, as trustee, with respect to the Bonds for the benefit of the holders of the Bonds. The Bonds initially bore interest at a variable interest rate (determined weekly), but in June 2011, at our option were converted into fixed-rate bonds at 8.50% per annum (which include covenants of, and other restrictions on, us). Additionally, in accordance with the terms of the loan agreement, we are required to keep all loan proceeds on deposit with Wells Fargo, the trustee, until funds are withdrawn by us for use in relation to the design and leasehold improvements of our new corporate headquarters in San Jose, California. As of both March 31, 2013 and December 30, 2012, we had restricted cash and cash equivalents of $3.0 million for design and leasehold improvements and debt service reserves under the CEDA loan agreement.

As of both March 31, 2013 and December 30, 2012, the $30.0 million aggregate principal amount of the Bonds was classified as "Long-term debt" in our Condensed Consolidated Balance Sheets.

September 2011 Revolving Credit Facility with Credit Agricole

On September 27, 2011, we entered into a revolving credit agreement with Credit Agricole, as administrative agent, and certain financial institutions, under which we may borrow up to $275.0 million until September 27, 2013. On December 24,

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2012, we amended the facility to reflect Total S.A.'s guarantee of our obligations under the facility. The facility amendment extended the maturity date to January 31, 2014, reduced interest rates payable and removed certain financial and restrictive covenants. Subsequent to the amendment, we are required to pay interest on outstanding borrowings of (a) with respect to any LIBOR loan, 0.6% plus the LIBOR divided by a percentage equal to one minus the stated maximum rate of all reserves required to be maintained against "Eurocurrency liabilities" as specified in Regulation D; and (b) with respect to any alternative base loan, 0.25% plus the greater of (1) the prime rate, (2) the Federal Funds rate plus 0.5%, and (3) the one month LIBOR plus 1%, and a commitment fee equal to 0.06% per annum on funds available for borrowing and not borrowed.

As of March 31, 2013 and December 30, 2012, we had $100.0 million and $275 million, respectively, outstanding under the revolving credit facility with Credit Agricole which was classified as "Long-term debt" on our Condensed Consolidated Balance Sheet. On April 4, 2013, we repaid the $100.0 million outstanding obligations under the revolving credit facility with Credit Agricole. Subsequent to this repayment, we had $275.0 million available under this credit facility.

August 2011 Letter of Credit Facility with Deutsche Bank

On August 9, 2011, we entered into a letter of credit facility agreement with Deutsche Bank, as issuing bank and as administrative agent, and certain financial institutions, and further amended on December 20, 2011. Payment of obligations under the letter of credit facility is guaranteed by Total S.A. pursuant to the Credit Support Agreement between us and Total S.A. The letter of credit facility provides for the issuance, upon our request, of letters of credit by the issuing banks thereunder in order to support certain of our obligations, in an aggregate amount not to exceed (a) $725.0 million until December 31, 2012; and (b) $771.0 million for the period from January 1, 2013 through December 31, 2013. Aggregate letter of credit amounts may be increased upon the agreement of the parties, but otherwise may not exceed (i) $878.0 million for the period from January 1, 2014 through December 31, 2014; (ii) $936.0 million for the period from January 1, 2015 through December 31, 2015; and (iii) $1.0 billion for the period from January 1, 2016 through June 28, 2016. Each letter of credit issued under the letter of credit facility must have an expiration date no later than the second anniversary of the issuance of that letter of credit, provided that up to 15% of the outstanding value of the letters of credit may have an expiration date of between two and three years from the date of issuance.

As of March 31, 2013, letters of credit issued under the August 2011 letter of credit facility with Deutsche Bank totaled $703.3 million .

September 2011 Letter of Credit Facility with Deutsche Bank and Deutsche Bank Trust Company Americas (together, "Deutsche Bank Trust")

On September 27, 2011, we entered into a letter of credit facility with Deutsche Bank Trust which provides for the issuance, upon request by us, letters of credit to support our obligations in an aggregate amount not to exceed $200.0 million. Each letter of credit issued under the facility is fully cash-collateralized and we have entered into a security agreement with Deutsche Bank Trust, granting them a security interest in a cash collateral account established for this purpose.

As of March 31, 2013 letters of credit issued under the Deutsche Bank Trust facility amounted to $1.8 million which were fully collateralized with restricted cash as classified on the Condensed Consolidated Balance Sheets.

Liquidity

As of March 31, 2013, we had unrestricted cash and cash equivalents of $505.6 million as compared to $457.5 million as of December 30, 2012. Our cash balances are held in numerous locations throughout the world and as of March 31, 2013, we had approximately $189.7 million held outside of the United States. This offshore cash is used to fund operations of our EMEA and APAC business units as well as non-U.S. manufacturing operations, which requires local payment for product materials and other expenses.  The amounts held outside of the United States represents the earnings of our foreign subsidiaries which, if repatriated to the United States under current law, would be subject to United States federal and state tax less applicable foreign tax credits. Repatriation of earnings that have not been subjected to U.S. or foreign withholding tax and which have been indefinitely reinvested outside the U.S. could result in additional United States federal income tax or foreign withholding tax payments in future years.

On July 5, 2010, we formed our AUOSP joint venture. Under the terms of the joint venture agreement, our subsidiary SunPower Technology, Ltd. ("SPTL") and AU Optronics Singapore Pte. Ltd. ("AUO") each own 50% of AUOSP. Both SPTL and AUO are obligated to provide additional funding to AUOSP in the future. Under the joint venture agreement, each shareholder agreed to contribute additional amounts to the joint venture through 2014 amounting to $241.0 million, or such lesser amount as the parties may mutually agree (see the Contractual Obligations table below). In addition, if AUOSP, SPTL, or

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AUO requests additional equity financing to AUOSP, then SPTL and AUO will each be required to make additional cash contributions of up to $50.0 million in the aggregate. Further, we could in the future guarantee certain financial obligations of AUOSP.

Our 4.50% debentures are convertible into cash. Under the terms of the 4.50% Warrants, we sold to affiliates of certain of the initial purchasers of the 4.50% cash convertible debentures warrants to acquire, subject to anti-dilution adjustments, up to 11.1 million shares of our common stock. The bond hedge and warrants described in Note 9 of Notes to the Condensed Consolidated Financial Statements represent a call spread overlay with respect to the 4.50% debentures. Assuming full performance by the counterparties (and 4.50% Warrants strike prices in excess of the conversion price of the 4.50% debentures), the transactions effectively reduce our potential payout over the principal amount on the 4.50% debentures upon conversion of the 4.50% debentures.

We expect total capital expenditures related to purchases of property, plant and equipment in the range of $70 million to $90 million in fiscal 2013 in order to improve our current and next generation solar cell manufacturing technology and other projects. In addition, we expect to invest a significant amount of capital to develop solar power systems and plants for sale to customers. The development of solar power plants can require long periods of time and substantial initial investments. Our efforts in this area may consist of all stages of development, including land acquisition, permitting, financing, construction, operation and the eventual sale of the projects. We often choose to bear the costs of such efforts prior to the final sale to a customer, which involves significant upfront investments of resources (including, for example, large transmission deposits or other payments, which may be non-refundable), land acquisition, permitting, legal and other costs, and in some cases the actual costs of constructing a project, in advance of the signing of PPAs and EPC contracts and the receipt of any revenue, much of which is not recognized for several additional months or years following contract signing. Any delays in disposition of one or more projects could have a negative impact on our liquidity.

Certain of our customers also require performance bonds issued by a bonding agency or letters of credit issued by financial institutions, which are returned to us upon satisfaction of contractual requirements. If there is a contractual dispute with the customer, the customer may withhold the security or make a draw under such security, which could have an adverse impact on our liquidity position. Obtaining letters of credit may require adequate collateral. All letters of credit issued under our August 2011 Deutsche Bank facility are guaranteed by Total S.A. pursuant to the Credit Support Agreement. Our letter of credit facility with Deutsche Bank Trust is fully collateralized by restricted cash, which reduces the amount of cash available for operations. As of March 31, 2013 letters of credit issued under the Deutsche Bank Trust facility amounted to $1.8 million which were fully collateralized with restricted cash on the Condensed Consolidated Balance Sheets.

In fiscal 2011, we launched our residential lease program with dealers in the United States, in partnership with a third-party financial institution, which allows customers to obtain SunPower systems under lease agreements up to 20 years, subject to financing availability. We have entered into facilities with financial institutions that will provide financing to support additional residential solar lease projects. Under the terms of certain programs we receive upfront payments for periods under which the third-party financial institution has agreed to assume collection risk for certain residential leases. Changes in the amount or timing of upfront payments received from the financial institutions may have an impact on our cash position within the next twelve months. The normal collection of monthly rent payments for leases placed in service is not expected to have a material impact on our cash position within the next twelve months. In the first quarter of fiscal 2013, we entered into a facility with a third-party investor under which both parties will invest in an entity which holds SunPower solar power systems and leases with residential customers. We were determined to hold a controlling interest in the less than wholly owned entity and has fully consolidated this entity as a result (see Note 1 of Notes to the Condensed Consolidated Financial Statements). We are actively arranging additional third-party financing for our residential lease program; however, due to the general challenging credit markets worldwide, we may be unable to arrange additional financing partners for our residential lease program in future periods, which could have a negative impact on our sales. In the unlikely event that we have entered into a material number of additional leases without promptly obtaining corresponding third-party financing, our cash and working capital could be negatively impacted.

We believe that our current cash, cash equivalents and cash expected to be generated from operations will be sufficient to meet our working capital and fund our committed capital expenditures over the next 12 months, including the development and construction of solar power systems and plants over the next 12 months. In addition, we have the Liquidity Support Facility (described below) with up to $325 million available from Total S.A. to us under certain specified circumstances. However, there can be no assurance that our liquidity will be adequate over time. A significant portion of our revenue is generated from a limited number of customers and large projects and our inability to execute these projects, or to collect from these customers or for these projects, would have a significant negative impact on our business. Our capital expenditures and use of working capital may be greater than we expect if we decide to make additional investments in the development and construction of solar power plants and sales of power plants and associated cash proceeds are delayed, or if we decide to accelerate increases in our

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manufacturing capacity internally or through capital contributions to joint ventures. We require project financing in connection with the construction of solar power plants, which financing may not be available on terms acceptable to us. In addition, we could in the future make additional investments in our joint ventures or guarantee certain financial obligations of our joint ventures, which could reduce our cash flows, increase our indebtedness and expose us to the credit risk of our joint ventures. See also "A limited number of customers and large projects are expected to continue to comprise a significant portion of our revenues and any decrease in revenue from these customers or projects, payments of liquidated damages, or an increase in related expenses, could have a significant adverse effect on us,"and "Due to the general economic environment, the continued market pressure driving down the average selling prices of our solar power products and other factors, we may be unable to generate sufficient cash flows or obtain access to external financing necessary to fund our operations and make adequate capital investments as planned" in Part I, Item 1A "Risk Factors" in our fiscal 2012 Form 10-K.

We are party to an agreement with a customer to construct the California Valley Solar Ranch, a solar park. Part of the debt financing necessary for the customer to pay for the construction of this solar park is being provided by the Federal Financing Bank in reliance on a guarantee of repayment provided by the Department of Energy (the "DOE") under a loan guarantee program. On February 28, 2012, we entered into a Liquidity Support Agreement with Total S.A. and the DOE, and a series of related agreements with Total S.A. and Total, under which Total S.A. has agreed to provide us, or cause to be provided, additional liquidity under certain circumstances to a maximum amount of $600 million (the "Liquidity Support Facility"). Total S.A. is required to provide liquidity support to us under the facility, and we are required to accept such liquidity support from Total S.A., if either our actual or projected unrestricted cash, cash equivalents, and unused borrowing capacity are reduced below $100 million, or we fail to satisfy any financial covenant under our indebtedness. In either such event, subject to a $600 million aggregate limit, Total S.A. is required to provide us with sufficient liquidity support to increase the amount of our unrestricted cash, cash equivalents and unused borrowing capacity to above $100 million, and to restore compliance with our financial covenants. On December 24, 2012, Total S.A. agreed to guarantee our revolving credit facility with Credit Agricole, which reduced the capacity available under the Liquidity Support Facility by $275 million. The Liquidity Support Facility is available until the completion of the solar park, expected to be completed before the end of 2013, and, under certain conditions, up to December 31, 2016, at which time all outstanding guarantees will expire and all outstanding debt under the facility will become due (except for the Total S.A. guarantee of our Credit Agricole facility).  In return for Total S.A.'s agreement to provide the Liquidity Support Facility, on February 28, 2012, we issued to Total a seven-year warrant to purchase 9,531,677 shares of our common stock at an exercise price of $7.8685 per share. During the term of the facility, we must pay Total S.A. a quarterly fee equal to 0.25% of the unused portion of the facility. Liquidity support may be provided by Total S.A. or through its affiliates in the form of revolving non-convertible debt, convertible debt, equity, guarantees of our indebtedness or other forms of liquidity support agreed to by us, depending on the amount outstanding under the facility immediately prior to provision of the applicable support among other factors.  We are required to compensate Total S.A. for any liquidity support actually provided, and the form and amount of such compensation depends on the form and amount of support provided, with the amount of compensation generally increasing with the amount of support provided over time. Such compensation is to be provided in a variety of forms including guarantee fees, warrants to purchase common stock, interest on amounts borrowed, and discounts on equity issued. The use of the Liquidity Support Facility is not limited to direct obligations related to the solar park, and is available for general corporate purposes, but we have agreed to conduct our operations, and use any proceeds from such facility in ways that minimize the likelihood of Total S.A. being required to provide further support.

In the first half of 2013, $100 million of the Credit Agricole revolver and $230 million of the 4.75% debentures will have a maturity of less than 12 months and become reclassified to short term debt on our condensed consolidated balance sheet. We are evaluating options to repay or refinance such indebtedness during 2013 or 2014, but there are no assurances that we will have sufficient available cash to repay such indebtedness or we will be able to refinance such indebtedness on similar terms to the expiring indebtedness. If our capital resources are insufficient to satisfy our liquidity requirements, we may seek to sell additional equity securities or debt securities or obtain other debt financing, including under the Liquidity Support Facility. The current economic environment, however, could limit our ability to raise capital by issuing new equity or debt securities on acceptable terms, and lenders may be unwilling to lend funds on acceptable terms that would be required to supplement cash flows to support operations. The sale of additional equity securities or convertible debt securities, including under the Liquidity Support Agreement, would result in additional dilution to our stockholders (and potential for further dilution upon the exercise of warrants or the conversion of convertible debt issued under the Liquidity Support Facility) and may not be available on favorable terms or at all, particularly in light of the current conditions in the financial and credit markets. Additional debt would result in increased expenses and would likely impose new restrictive covenants which may be similar or different than those restrictions contained in the covenants under our current loan agreements and debentures. In addition, financing arrangements, including project financing for our solar power plants and letters of credit facilities, may not be available to us, or may not be available in amounts or on terms acceptable to us.

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Contractual Obligations

The following summarizes our contractual obligations as of March 31, 2013:

			Payments Due by Period
(In thousands)	Total		2013 (remaining 9 months)		2014-2015		2016-2017		Beyond 2017
Convertible debt, including interest (1)	$	513,399	$	16,632	$	496,767	$	—	$	—
IFC mortgage loan, including interest (2)	77,175		10,596		33,078		30,997		2,504
CEDA loan, including interest (3)	75,901		1,913		5,100		5,100		63,788
Credit Agricole revolving credit facility, including interest (4)	100,703		634		100,069		—		—
Other debt, including interest	41,560		102		5,516		4,121		31,821
Future financing commitments (5)	246,981		150,211		96,770		—		—
Operating lease commitments (6)	164,300		17,355		33,445		27,998		85,502
Sale-leaseback financing (7)	37,042		6,770		3,731		3,664		22,877
Capital lease commitments (8)	8,191		1,475		2,560		2,271		1,885
Non-cancellable purchase orders (9)	219,644		219,644		—		—		—
Purchase commitments under agreements (10)	2,347,564		497,052		811,846		521,571		517,095
Total	$	3,832,460	$	922,384	$	1,588,882	$	595,722	$	725,472

(1) Convertible debt, including interest, relates to the aggregate of $480.1 million in outstanding principal amount of our senior convertible debentures on March 31, 2013. For the purpose of the table above, we assume that all holders of the 4.50% debentures and 4.75% debentures will hold the debentures through the date of maturity in fiscal 2015 and 2014, respectively, and all holders of the 0.75% debentures will require us to repurchase the debentures on August 1, 2015, and upon conversion, the values of the senior convertible debentures will be equal to the aggregate principal amount with no premiums.

(2) IFC mortgage loan, including interest, relates to the $70.0 million borrowed as of March 31, 2013. Under the loan agreement, we are required to repay the amount borrowed, starting 2 years after the date of borrowing, in 10 equal semiannual installments over the following 5 years. Subsequent to a waiver received from IFC, we are required to pay interest of LIBOR plus 3% per annum on outstanding borrowings through January 5, 2013, LIBOR plus 4.25% per annum on outstanding borrowings from January 6, 2013 through September 30, 2013, LIBOR plus 5% per annum on outstanding borrowings from October 1, 2013 through January 5, 2014, and LIBOR plus 3% per annum on outstanding borrowings from January 6, 2014 through maturity. If we utilize the waiver for the fourth quarter of fiscal 2013, the fiscal 2013 rates would continue to apply in fiscal 2014. If we do not need to utilize the waiver, we are required to pay interest of LIBOR plus 3% per annum on outstanding borrowings; a front-end fee of 1% on the principal amount of borrowings at the time of borrowing; and a commitment fee of 0.5% per annum on funds available for borrowing and not borrowed.

(3) CEDA loan, including interest, relates to the proceeds of the $30.0 million aggregate principal amount of the Bonds. The Bonds mature on April 1, 2031. On June 1, 2011 the Bonds were converted to bear interest at a fixed rate of 8.50% through maturity.

(4) Credit Agricole revolving credit facility, with interest, relates to the $100.0 million borrowed as of March 31, 2013 and maturing on January 31, 2014. We are required to pay interest on outstanding borrowings of (a) with respect to any LIBOR loan, 0.6% plus the LIBOR divided by a percentage equal to one minus the stated maximum rate of all reserves required to be maintained against "Eurocurrency liabilities" as specified in Regulation D; (b) with respect to any alternative base loan, 0.25% plus the greater of (1) the prime rate, (2) the Federal Funds rate plus 0.5%, and (3) the one month LIBOR plus 1%.

(5) We and AUO agreed in the joint venture agreement to contribute additional amounts to AUOSP in fiscal 2012 through 2014 amounting to $241.0 million by each shareholder, or such lesser amount as the parties may mutually agree. Further, in connection with a purchase agreement with a non-public company we will be required to provide additional financing

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to such party of up to $4.9 million, subject to certain conditions. Under our long-term convertible note agreement with Diamond Energy Pty. Ltd., we are additionally required to provide additional funds amounting to AUD 1.0 million during fiscal 2013.

(6) Operating lease commitments primarily relate to certain solar power systems leased from unaffiliated third parties over minimum lease terms of up to 20 years and various lease agreements for our headquarters in San Jose, California, sales and support offices throughout the United States and Europe and a solar module facility in Mexicali, Mexico.

(7) Sale-leaseback financing relates to future minimum lease obligations for a solar power system under a sale-leaseback arrangement which was determined to be integral equipment and accounted for under the financing method.

(8) Capital lease commitments primarily relate to certain buildings, manufacturing and equipment under capital leases in Europe for terms of up to 12 years.

(9) Non-cancellable purchase orders relate to purchases of raw materials for inventory and manufacturing equipment from a variety of vendors.

(10) Purchase commitments under agreements relate to arrangements entered into with several suppliers, including joint ventures, for polysilicon, ingots, wafers, solar cells and solar panels as well as agreements to purchase solar renewable energy certificates from solar installation owners in New Jersey. These agreements specify future quantities and pricing of products to be supplied by the vendors for periods up to 10 years and there are certain consequences, such as forfeiture of advanced deposits and liquidated damages relating to previous purchases, in the event that we terminate the arrangements.

Liabilities Associated with Uncertain Tax Positions

Due to the complexity and uncertainty associated with our tax positions, we cannot make a reasonably reliable estimate of the period in which cash settlement will be made for our liabilities associated with uncertain tax positions in other long-term liabilities. Therefore, they have been excluded from the table above. As of March 31, 2013, total liabilities associated with uncertain tax positions were $35.6 million and are included in "Other long-term liabilities" in our Condensed Consolidated Balance Sheets as they are not expected to be paid within the next twelve months.

Off-Balance-Sheet Arrangements

As of March 31, 2013, we did not have any significant off-balance-sheet arrangements, as defined in Item 303(a)(4)(ii) of SEC Regulation S-K.

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ITEM 3: QUANTITATIVE AND QUALITATIVE DISCLOSURE ABOUT MARKET RISK

Foreign Currency Exchange Risk

Our exposure to movements in foreign currency exchange rates is primarily related to sales to European customers that are denominated in Euros. Revenue generated from European customers represented 11% and 32% our total revenue in the three months ended March 31, 2013 and April 1, 2012, respectively. A 10% change in the Euro exchange rate would have impacted our revenue by approximately $6.9 million and $15.6 million in the three months ended March 31, 2013 and April 1, 2012, respectively.

In the past, we have experienced an adverse impact on our revenue, gross margin and profitability as a result of foreign currency fluctuations. When foreign currencies appreciate against the U.S. dollar, inventories and expenses denominated in foreign currencies become more expensive. Strengthening of the Malaysian Ringgit against the U.S. dollar would increase AUOSP's liability under the facility agreement with the Malaysian government which in turn would negatively impact our equity in earnings (loss) of the unconsolidated investee. An increase in the value of the U.S. dollar relative to foreign currencies could make our solar power products more expensive for international customers, thus potentially leading to a reduction in demand, our sales and profitability. Furthermore, many of our competitors are foreign companies that could benefit from such a currency fluctuation, making it more difficult for us to compete with those companies.

We currently conduct hedging activities which involve the use of option and forward currency contracts to address our exposure to changes in the foreign exchange rate between the U.S. dollar and other currencies. As of March 31, 2013, we had outstanding hedge option currency contracts and forward currency contracts with aggregate notional values of $66.4 million and $75.6 million, respectively. As of December 30, 2012, we held option and forward contracts totaling $71.0 million and $148.2 million, respectively, in notional value. Because we hedge some of our expected future foreign exchange exposure, if associated revenues do not materialize we could experience a reclassification of ineffective gains or losses into earnings. Such a reclassification could adversely impact our revenue, margins and results of operations. We cannot predict the impact of future exchange rate fluctuations on our business and operating results.

Credit Risk

We have certain financial and derivative instruments that subject us to credit risk. These consist primarily of cash and cash equivalents, restricted cash and cash equivalents, investments, accounts receivable, notes receivable, advances to suppliers, foreign currency option contracts, foreign currency forward contracts, bond hedge and warrant transactions. We are exposed to credit losses in the event of nonperformance by the counterparties to our financial and derivative instruments. Our investment policy requires cash and cash equivalents, restricted cash and cash equivalents, and investments to be placed with high-quality financial institutions and limits the amount of credit risk from any one issuer. We additionally perform ongoing credit evaluations of our customers’ financial condition whenever deemed necessary and generally do not require collateral.

We enter into agreements with vendors that specify future quantities and pricing of polysilicon to be supplied for periods up to 10 years. Under certain agreements, we are required to make prepayments to the vendors over the terms of the arrangements. As of March 31, 2013 and December 30, 2012, advances to suppliers totaled $355.7 million and $351.4 million, respectively. Two suppliers accounted for approximately 75% and 25% of total advances to suppliers as of March 31, 2013, and approximately 76% and 23% of total advances to suppliers as of December 30, 2012. We may be unable to recover such prepayments if the credit conditions of these suppliers materially deteriorate.

We enter into foreign currency derivative contracts and convertible debenture hedge transactions with high-quality financial institutions and limit the amount of credit exposure to any single counterparty. The foreign currency derivative contracts are limited to a time period of less than one year. We regularly evaluate the credit standing of our counterparty financial institutions.

Interest Rate Risk

We are exposed to interest rate risk because many of our customers depend on debt financing to purchase our solar power systems. An increase in interest rates could make it difficult for our customers to obtain the financing necessary to purchase our solar power systems on favorable terms, or at all, and thus lower demand for our solar power products, reduce revenue and adversely impact our operating results. An increase in interest rates could lower a customer's return on investment in a system or make alternative investments more attractive relative to solar power systems, which, in each case, could cause our customers to seek alternative investments that promise higher returns or demand higher returns from our solar power systems, reduce gross margin and adversely impact our operating results. This risk is significant to our business because our

57

sales model is highly sensitive to interest rate fluctuations and the availability of credit, and would be adversely affected by increases in interest rates or liquidity constraints.

Our interest expense would increase to the extent interest rates rise in connection with our variable interest rate borrowings. As of March 31, 2013, the outstanding principal balance of our variable interest borrowings was $170.0 million. We do not believe that an immediate 10% increase in interest rates would have a material effect on our financial statements. In addition, lower interest rates have an adverse impact on our interest income. Our investment portfolio primarily consists of $97.0 million in money market funds as of March 31, 2013, and exposes us to interest rate risk. Due to the relatively short-term nature of our investment portfolio, we do not believe that an immediate 10% increase in interest rates would have a material effect on the fair market value of our money market funds. Since we believe we have the ability to liquidate substantially all of this portfolio, we do not expect our operating results or cash flows to be materially affected to any significant degree by a sudden change in market interest rates on our investment portfolio.

Equity Price Risk involving Minority Investments in Joint Ventures and Other Non-Public Companies

Our investments held in joint ventures and other non-public companies expose us to equity price risk. As of March 31, 2013 and December 30, 2012, investments of $111.2 million and $111.5 million, respectively, are accounted for using the equity method, and $10.2 million and $14.9 million, respectively, are accounted for using the cost method. These strategic investments in third parties are subject to risk of changes in market value, which if determined to be other-than-temporary, could result in realized impairment losses. We generally do not attempt to reduce or eliminate our market exposure in equity and cost method investments. We monitor these investments for impairment and record reductions in the carrying values when necessary. Circumstances that indicate an other-than-temporary decline include the valuation ascribed to the issuing company in subsequent financing rounds, decreases in quoted market prices and declines in operations of the issuer. There can be no assurance that our equity and cost method investments will not face risks of loss in the future.

Interest Rate Risk and Market Price Risk Involving Convertible Debt

The fair market value of our 4.75%, 4.50%, and 0.75% convertible debentures is subject to interest rate risk, market price risk and other factors due to the convertible feature of the debentures. The fair market value of the debentures will generally increase as interest rates fall and decrease as interest rates rise. In addition, the fair market value of the debentures will generally increase as the market price of our common stock increases and decrease as the market price of our common stock falls. The interest and market value changes affect the fair market value of the debentures, but do not impact our financial position, cash flows or results of operations due to the fixed nature of the debt obligations, except to the extent increases in the value of our common stock may provide the holders of our 4.50% debentures, and/or 0.75% debentures the right to convert such debentures into cash in certain instances. The aggregate estimated fair value of the 4.75% debentures, 4.50% debentures, and 0.75% debentures was $480.3 million as of March 31, 2013. The aggregate estimated fair value of the 4.75% debentures, 4.50% debentures, 1.25% debentures and 0.75% debentures was $447.8 million as of December 30, 2012. Estimated fair values are based on quoted market prices as reported by an independent pricing source. A 10% increase in quoted market prices would increase the estimated fair value of our then-outstanding debentures to $528.4 million and $492.6 million as of March 31, 2013 and December 30, 2012, respectively, and a 10% decrease in the quoted market prices would decrease the estimated fair value of our then-outstanding debentures to $432.3 million and $403.0 million as of March 31, 2013 and December 30, 2012, respectively.

58

ITEM 4:CONTROLSAND PROCEDURES

Evaluation of Disclosure Controls and Procedures

We maintain "disclosure controls and procedures," as defined in Rule 13a-15(e) and 15d-15(e) under the Exchange Act, that are designed to provide reasonable assurance that information required to be disclosed in reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure. In designing and evaluating our disclosure controls and procedures, management recognizes that disclosure controls and procedures, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the disclosure controls and procedures are met. Additionally, in designing disclosure controls and procedures, our management is required to apply its judgment in evaluating the cost-benefit relationship of possible disclosure controls and procedures. The design of any disclosure control and procedure also is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions.

Based on their evaluation as of the end of the period covered by this Quarterly Report on Form 10-Q, our Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures were effective as of March 31, 2013 at a reasonable assurance level.

Changes in Internal Control over Financial Reporting

We regularly review our system of internal control over financial reporting and make changes to our processes and systems to improve controls and increase efficiency, while ensuring that we maintain an effective internal control environment. Changes may include such activities as implementing new, more efficient systems, consolidating activities, and migrating processes.

There were no changes in our internal control over financial reporting that occurred during our most recent fiscal quarter that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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PART II

ITEM 1. LEGAL PROCEEDINGS

The disclosure under "Legal Matters" in "Note 7. Commitments and Contingencies" in "Part I. Financial Information, Item 1. Financial Statements: Notes to Condensed Consolidated Financial Statements" of this Quarterly Report on Form 10-Q is incorporated herein by reference.

ITEM 1A. RISK FACTORS

In addition to other information set forth in this report, readers should carefully consider the risk factors discussed in "Part I. Item 1A: Risk Factors" in our Annual Report on Form 10-K for the fiscal year ended December 30, 2012, which could materially affect our business, financial condition or future results. The risks described in our Annual Report on Form 10-K are not the only risks facing our company. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition or future results.

ITEM 2: UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

Issuer Purchases of Equity Securities

The following table sets forth all purchases made by or on behalf of us or any "affiliated purchaser," as defined in Rule 10b-18(a)(3) under the Securities Exchange Act of 1934, of shares of our common stock during each of the indicated periods.

Period	Total Number of Shares Purchased (1)	Average Price Paid Per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Maximum Number of Shares That May Yet Be Purchased Under the Publicly Announced Plans or Programs
December 31, 2012 through January 27, 2013	230	$	7.72	—	—
January 28, 2013 through February 24, 2013	12,444	$	8.89	—	—
February 25, 2013 through March 31, 2013	897,478	$	11.82	—	—
	910,152	$	11.78	—	—

(1) The shares purchased represent shares surrendered to satisfy tax withholding obligations in connection with the vesting of restricted stock issued to employees.

60

ITEM 6: EXHIBITS

EXHIBIT INDEX
Exhibit Number	Description
10.1*	Mortgage Supplement No. 3, dated February 7, 2013, by and between SunPower Philippines Manufacturing Ltd., SPML Land, Inc. and International Finance Corporation.
31.1*	Certification by Chief Executive Officer Pursuant to Rule 13a-14(a)/15d-14(a).
31.2*	Certification by Chief Financial Officer Pursuant to Rule 13a-14(a)/15d-14(a).
32.1*	Certification Furnished Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS*+	XBRL Instance Document.
101.SCH*+	XBRL Taxonomy Schema Document.
101.CAL*+	XBRL Taxonomy Calculation Linkbase Document.
101.LAB*+	XBRL Taxonomy Label Linkbase Document.
101.PRE*+	XBRL Taxonomy Presentation Linkbase Document.
101.DEF*+	XBRL Taxonomy Definition Linkbase Document.

Exhibits marked with an asterisk (*) are filed herewith.

Exhibits marked with a cross (+) are XBRL (Extensible Business Reporting Language) information furnished and not filed herewith, are not a part of a registration statement or Prospectus for purposes of sections 11 or 12 of the Securities Act of 1933, are deemed not filed for purposes of section 18 of the Securities Exchange Act of 1934, and otherwise are not subject to liability under these sections.

61

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereto duly authorized.

	SUNPOWER CORPORATION
Dated: May 7, 2013	By:	/s/  CHARLES D. BOYNTON
		Charles D. Boynton
		Executive Vice President and
		Chief Financial Officer

62

Index to Exhibits

Exhibit Number	Description
10.1*	Mortgage Supplement No. 3, dated February 7, 2013, by and between SunPower Philippines Manufacturing Ltd., SPML Land, Inc. and International Finance Corporation.
31.1*	Certification by Chief Executive Officer Pursuant to Rule 13a-14(a)/15d-14(a).
31.2*	Certification by Chief Financial Officer Pursuant to Rule 13a-14(a)/15d-14(a).
32.1*	Certification Furnished Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS*+	XBRL Instance Document.
101.SCH*+	XBRL Taxonomy Schema Document.
101.CAL*+	XBRL Taxonomy Calculation Linkbase Document.
101.LAB*+	XBRL Taxonomy Label Linkbase Document.
101.PRE*+	XBRL Taxonomy Presentation Linkbase Document.
101.DEF*+	XBRL Taxonomy Definition Linkbase Document.

Exhibits marked with an asterisk (*) are filed herewith.

Exhibits marked with a cross (+) are XBRL (Extensible Business Reporting Language) information furnished and not filed herewith, are not a part of a registration statement or Prospectus for purposes of sections 11 or 12 of the Securities Act of 1933, are deemed not filed for purposes of section 18 of the Securities Exchange Act of 1934, and otherwise are not subject to liability under these sections.

63

EX-10.1

EXHIBIT 10.1

MORTGAGE SUPPLEMENT

Mortgage Supplement No. 3

This Mortgage Supplement No. 3 (the “Supplement”), is entered into by and among SunPower Philippines Manufacturing Ltd., a foreign corporation duly licensed to do business under the laws of the Philippines with office address at 100 Trade Avenue, Phase 4, Special Economic Zone, Laguna Technopark, Biñan Laguna (“SPML”), SPML Land, Inc., a corporation organized and existing under the laws of the Philippines with principal address at 100 East Main Ave., LTI Biñan Laguna (“SPML Land” or, together with SPML, the “Mortgagors”, or, individually, each the “Mortgagor”); and the International Finance Corporation, an international organization established by the Articles of Agreement among its member countries including the Republic of Philippines ("IFC" or the “Mortgagee”).

WHEREAS, the Mortgagors and Mortgagee have executed and registered a Mortgage Agreement dated as of 6 May 2010 (the “Mortgage Agreement”), to secure the Obligations of the Mortgagors referred to in such agreement;

WHEREAS, the Mortgage Agreement provides that the Mortgagors and Mortgagee shall execute and register Mortgage Supplements for the purposes stated therein; and

WHEREAS, in fulfillment of the continuing obligation of the Mortgagors under the Mortgage Agreement, Loan Agreement, and Financing Documents each of the Mortgagors desires to execute this Mortgage Supplement with the Mortgagee.

NOW, THEREFORE, the parties hereto agree as follows:

1. Unless otherwise defined in this Mortgage Supplement, (i) capitalized terms shall have the meanings set forth in the Loan Agreement and the Mortgage Agreement unless the context otherwise requires, and (ii) the principles of construction set forth in the Loan Agreement and the Mortgage Agreement shall apply.

2. The Mortgagors hereby confirm that (i) certain of the Assets identified and described as Future Chattel in the Mortgage Agreement have come into existence and/or have been acquired in ownership by a Mortgagor as of the date hereof (those certain assets to be herein called the “New Assets”), and (ii) the New Assets are now identified and more fully described in Schedule A to this Mortgage Supplement.

3. The Mortgagors hereby acknowledge and agree (i) that the Chattel Mortgage has been granted, created, established, and constituted on the New Assets in favor of Mortgagee and (ii) that such Chattel Mortgageare subject to the same provisions, terms, and conditions of the Mortgage Agreement as are applicable to the Mortgage on the Present Chattelthereunder, as fully and completely for all legal intents and purposes as if owned by the relevant Mortgagor on the date of execution of the Mortgage Agreement.

1

4. The parties hereto confirm that the New Assets serve as security for payment of the Obligations to the extent of the amount stated in Section 3.01(c)(Creation of Chattel Mortgage)of the Mortgage Agreement, including interests, fees, and charges that may be due thereon.

5. Each of the Mortgagors undertakes, at Mortgagors' cost and expense, to register this Mortgage Supplement with the appropriate Registry of Deeds and, where necessary, other appropriate government agencies, in the Philippines in accordance with the Mortgage Agreement.

IN WITNESS WHEREOF, the parties hereto have caused their duly authorized representative to execute and deliver this Supplement as of __________________.

SunPower Philippines Manufacturing Ltd.

By: /s/ Jaxcha Ortmanns

Name: Jascha Ortmanns

Position: Vice President - Operations

SPML Land, Inc.

By: /s/ Michelle Ramos

Name: Michelle Ramos

Position: Treasurer/CFO

International Finance Corporation

By: /s/ Jesse O. Ang

Name: Jesse O. Ang

Position: Resident Representative

Signed in the presence of

_________________________ _________________________

2

AFFIDAVIT OF GOOD FAITH

We swear that the Chattel Mortgage embodied in the Mortgage Agreement, as amended and/or supplemented by the foregoing Mortgage Supplement, is made for the purpose of securing the obligations specified therein, and for no other purpose, and that the same are just and valid obligations not entered into for the purpose of fraud.

SunPower Philippines Manufacturing Ltd.

By: /s/ Jaxcha Ortmanns

Name: Jascha Ortmanns

Position: Vice President - Operations

SPML Land, Inc.

By: /s/ Michelle Ramos

Name: Michelle Ramos

Position: Treasurer/CFO

International Finance Corporation

By: /s/ Jesse O. Ang

Name: Jesse O. Ang

Position: Resident Representative

3

ACKNOWLEDGMENT AND CERTIFICATION OF OATH

REPUBLIC OF THE PHILIPPINES)

) S.S.

BEFORE ME, a Notary Public for and in the above jurisdiction this ____ day of FEB 05 2013 personally appeared the following individual/s, representing the respective corporation/s indicated below his/their names:

Name	Passport No.	Issued at/on
SunPower Philippines Manufacturing Ltd. represented by: Jascha Ortmanns		Deutsch
SPML Land, Inc. represented by: Michelle Ramos		DFA, Manila

personally known to me or identified by me through competent evidence of identity to be the same persons who presented to me and signed in my presence this Mortgage Supplement No. 3 consisting of six (6) pages, including this Acknowledgment Page, all of which were signed by them and their instrumental witnesses, and they represented that they executed this Agreement as their free and voluntary act and that they are duly authorized to sign for the corporations they respectively represent.

This Mortgage Supplement No. 3 relates to the Mortgage Agreement dated as of 6 May 2010 among the same parties and consists of six (6) pages, including the pages of this Acknowledgment and Schedule A attached hereto, and is signed by the parties hereto and their instrumental witnesses on the signature page and on the left margin of the other pages hereof.

IN WITNESS WHEREOF, I have hereunto set my hand and affixed my notarial seal this ___ day of FEB 05 2013, 2013 at Taguig City, Philippines.

Doc. No. 81	[Notary Stamp]	/s/ Miguel Antonio B. Pastelero
		MIGUEL ANTONIO B. PASTELERO
Page No. 18		Notary Public, Taguig City
Book No. 1		Appointment No. 257, Until December 31, 2013
Series of 2013.		12th Floor, Net One Center, 26th St., cor. 3rd Avenue
		Crescent Park West Bonifacio Global City, Taguig 1634
		Roll of Attorney No. 56173
		PTR No. 3174456; 01/03/2012; Makan City
		IBP No 869539; 01/03/2012; Quezon City

4

ACKNOWLEDGMENT AND CERTIFICATION OF OATH

REPUBLIC OF THE PHILIPPINES)

) S.S.

BEFORE ME, a Notary Public for and in the above jurisdiction this FEB 07 2013 day of ____ personally appeared the following individual/s, representing the respective corporation/s indicated below his/their names:

Name	Passport No.	Issued at/on
International Finance Corporation represented by: Jesse O. Ang		DFA Manila 1/14/10

personally known to me or identified by me through competent evidence of identity to be the same persons who presented to me and signed in my presence this Mortgage Supplement No. 3 consisting of six (6) pages, including this Acknowledgment Page, all of which were signed by them and their instrumental witnesses, and they represented that they executed this Agreement as their free and voluntary act and that they are duly authorized to sign for the corporations they respectively represent.

This Mortgage Supplement No. 3 relates to the Mortgage Agreement dated as of 6 May 2010 among the same parties and consists of six (6) pages, including the pages of this Acknowledgment and Schedule A attached hereto, and is signed by the parties hereto and their instrumental witnesses on the signature page and on the left margin of the other pages hereof.

IN WITNESS WHEREOF, I have hereunto set my hand and affixed my notarial seal this ___ day of FEB 07 2013, 2013 at CITY OF MANILA, Philippines.

Doc. No. 482	/s/ SOCRATES G. MARANAN
Page No. 97	NOTARY PUBLIC
Book No. 9	UNTIL DECEMBER 31, 2013
Series of 2013.	IBP No. 840842/10-21-11
	PTR No. 1414392/01-02-13
	NC. No. 2012-009/ROA No. 31923

5

Schedule A

DESCRIPTION OF NEW ASSETS

Description	Asset Number	Acquisition Date	Class
Laser	89,742	21-May-12	Mfg Eqpt
Laser	89742A	21-May-12	Mfg Eqpt
Printer Automation	41,796	31-Mar-12	Mfg Eqpt
Printer Automation	41796A	22-Mar-12	Mfg Eqpt
Printer Automation	41796B	23-Apr-12	Mfg Eqpt
Laser	89,737	23-Jul-12	Mfg Eqpt
Laser	89737A	24-Jul-12	Mfg Eqpt
Laser	89737B	23-Jul-12	Mfg Eqpt
Laser	89,738	23-Jul-12	Mfg Eqpt
Laser	89738A	23-Jul-12	Mfg Eqpt
Laser	89738B	23-Jul-12	Mfg Eqpt
Laser	89,744	23-Jul-12	Mfg Eqpt
Laser	89744A	24-Jul-12	Mfg Eqpt
Laser	89744B	23-Jul-12	Mfg Eqpt
Printer Automation	100754A	23-Jul-12	Mfg Eqpt
Metrology	78,733	20-Apr-12	Mfg Eqpt
Metrology	78733A	15-May-12	Mfg Eqpt
Laser	46,737	20-Apr-12	Mfg Eqpt
Automation 6	131,733	20-Aug-12	Mfg Eqpt
Automation 6	131733-UL	20-Aug-12	Mfg Eqpt
Automation 6	150,751	20-Aug-12	Mfg Eqpt
Automation 6	150751-UL:	20-Aug-12	Mfg Eqpt
Automation 6	150,750	20-Aug-12	Mfg Eqpt
Automation 6	150750-UL	20-Aug-12	Mfg Eqpt
Automation 6	78736C	10-Aug-12	Mfg Eqpt
Automation 6	150,764	5-Aug-12	Mfg Eqpt
Automation 6	150764-UL	20-Aug-12	Mfg Eqpt
Laser	150,772	19-Aug-12	Mfg Eqpt
Laser	150,773	19-Aug-12	Mfg Eqpt
Laser	150,774	19-Aug-12	Mfg Eqpt
Printer Automation	193768C	19-Aug-12	Mfg Eqpt
Printer Automation	193769C	19-Aug-12	Mfg Eqpt
Printer Automation	193768B	19-Aug-12	Mfg Eqpt
Printer Automation	193768B	19-Aug-12	Mfg Eqpt
Printer Automation	193768B	19-Aug-12	Mfg Eqpt
Automation 6	151,740	20-Aug-12	Mfg Eqpt
Automation 6	151740-UL	20-Aug-12	Mfg Eqpt
Automation 6	151,741	20-Aug-12	Mfg Eqpt
Automation 6	151741-UL	20-Aug-12	Mfg Eqpt

Description	Asset Number	Acquisition Date	Class
Printer Automation	193,768	19-Nov-12	Mfg Eqpt
Printer Automation	193768A	19-Nov-12	Mfg Eqpt
Printer Automation	193,769	19-Nov-12	Mfg Eqpt
Printer Automation	193769A	19-Nov-12	Mfg Eqpt
Printer Automation	193769B	19-Nov-12	Mfg Eqpt
Printer Automation	158,733	17-May-12	Mfg Eqpt
Printer Automation	158733A	24-Oct-12	Mfg Eqpt
Automation 6	54,738	20-Apr-12	Mfg Eqpt
Automation 6	54738A	23-Apr-12	Mfg Eqpt
Automation 6	54738-UL	20-Apr-12	Mfg Eqpt
Automation 6	54,739	20-Apr-12	Mfg Eqpt
Automation 6	54739A	23-Apr-12	Mfg Eqpt
Automation 6	54739-UL	20-Apr-12	Mfg Eqpt
Automation 6	54,740	20-Apr-12	Mfg Eqpt
Automation 6	54740A	23-Apr-12	Mfg Eqpt
Automation 6	54740-UL	20-Apr-12	Mfg Eqpt
Automation 6	150764B	24-Sep-12	Mfg Eqpt
Automation 6	150740B	24-Sep-12	Mfg Eqpt
Automation 6	151741B	24-Sep-12	Mfg Eqpt
Laser	78,736	20-Apr-12	Mfg Eqpt
Laser	78736A	23-Apr-12	Mfg Eqpt
Laser	78736B	23-Apr-12	Mfg Eqpt
Laser	78736D	23-Apr-12	Mfg Eqpt
Laser	78,737	20-Apr-12	Mfg Eqpt
Laser	78737A	23-Apr-12	Mfg Eqpt
Laser	78737B	23-Apr-12	Mfg Eqpt
Laser	78737C	23-Apr-12	Mfg Eqpt
Laser	78737D	23-Apr-12	Mfg Eqpt
Laser	78,738	20-Apr-12	Mfg Eqpt
Laser	78738A	23-Apr-12	Mfg Eqpt
Laser	78738B	23-Apr-12	Mfg Eqpt
Laser	78738C	23-Apr-12	Mfg Eqpt
Laser	78738D	23-Apr-12	Mfg Eqpt
Laser	89737C	2-Sep-12	Mfg Eqpt
Laser	89738C	2-Sep-12	Mfg Eqpt
Laser	89744C	2-Sep-12	Mfg Eqpt
Laser	150772A	24-Oct-12	Mfg Eqpt
Laser	150772B	24-Oct-12	Mfg Eqpt
Laser	150773A	24-Oct-12	Mfg Eqpt
Laser	150773B	24-Oct-12	Mfg Eqpt
Laser	150774A	24-Oct-12	Mfg Eqpt
Laser	150774B	24-Oct-12	Mfg Eqpt
Laser	157,733	24-Oct-12	Non-Mfg Eqpt
Laser	157733A	24-Oct-12	Non-Mfg Eqpt
Laser	177,755	24-Oct-12	Non-Mfg Eqpt
Laser	193,771	19-Nov-12	Mfg Eqpt
Laser	193,772	19-Nov-12	Mfg Eqpt

Description	Asset Number	Acquisition Date	Class
Printer Automation	207,743	4-Nov-12	Mfg Eqpt
Printer Automation	151,737	19-Aug-12	Mfg Eqpt
Laser	177,752	25-Sep-12	Mfg Eqpt
Laser	177,753	25-Sep-12	Mfg Eqpt
Laser	177,754	25-Sep-12	Mfg Eqpt
Automation 6	187,738	7-Oct-12	Mfg Eqpt
Laser	187,739	7-Oct-12	Mfg Eqpt
Laser	187,740	7-Oct-12	Mfg Eqpt
Laser	187,741	7-Oct-12	Mfg Eqpt
Automation 6	187,758	11-Oct-12	Mfg Eqpt
Automation 6	187,759	11-Oct-12	Mfg Eqpt
Automation 6	187,760	11-Oct-12	Mfg Eqpt
Automation 6	187,761	11-Oct-12	Mfg Eqpt
Automation 6	187,762	11-Oct-12	Mfg Eqpt
Printer Automation	193,767	21-Oct-12	Mfg Eqpt
Printer Automation	206,739	18-Nov-12	Mfg Eqpt
Printer Automation	206,740	18-Nov-12	Mfg Eqpt
Printer Automation	207,747	15-Nov-12	Mfg Eqpt
Laser	207,754	19-Nov-12	Mfg Eqpt
Laser	207,755	19-Nov-12	Mfg Eqpt
Laser	207,756	19-Nov-12	Mfg Eqpt
Printer Automation	208,738	19-Nov-12	Mfg Eqpt
Laser	177753A	7-Oct-12	Mfg Eqpt
Automation 6	187738-UL	16-Oct-12	Mfg Eqpt
Laser	187739A	25-Sep-12	Mfg Eqpt
Laser	187739B	16-Dec-12	Mfg Eqpt
Laser	187740A	19-Nov-12	Mfg Eqpt
Laser	187740B	16-Dec-12	Mfg Eqpt
Laser	187741A	19-Nov-12	Mfg Eqpt
Laser	187741B	16-Dec-12	Mfg Eqpt
Automation 6	187758-UL	16-Oct-12	Mfg Eqpt
Automation 6	187759-UL	16-Oct-12	Mfg Eqpt
Automation 6	187760-UL	18-Oct-12	Mfg Eqpt
Automation 6	187761-UL	18-Nov-12	Mfg Eqpt
Automation 6	187762-UL	18-Nov-12	Mfg Eqpt
Printer Automation	193770A	7-Oct-12	Mfg Eqpt
Printer Automation	208738A	19-Nov-12	Mfg Eqpt
Printer Automation	208738B	19-Nov-12	Mfg Eqpt
Printer Automation	208738C	19-Nov-12	Mfg Eqpt
Printer Automation	208738D	19-Nov-12	Mfg Eqpt
Printer Automation	208738E	19-Nov-12	Mfg Eqpt
Printer Automation	208738F	19-Nov-12	Mfg Eqpt
Printer Automation	208738G	19-Nov-12	Mfg Eqpt

Description	Asset Number	Acquisition Date	Class
Printer Automation	208738H	19-Nov-12	Mfg Eqpt
Printer Automation	208738I	19-Nov-12	Mfg Eqpt
Printer Automation	208738J	19-Nov-12	Mfg Eqpt
Printer Automation	208738K	19-Nov-12	Mfg Eqpt
Printer Automation	208738L	19-Nov-12	Mfg Eqpt
Printer Automation	208738M	19-Nov-12	Mfg Eqpt
Automated Tester	141,751	5-Aug-12	Mfg Eqpt
Diffusion	157,734	4-Sep-12	Mfg Eqpt
Diffusion	165,733	9-Sep-12	Mfg Eqpt
Automated Tester	165,737	11-Sep-12	Mfg Eqpt
Automated Tester	177,741	9-Sep-12	Mfg Eqpt
Diffusion	177,746	23-Sep-12	Mfg Eqpt
Wafer Transfer System	177,747	24-Sep-12	Mfg Eqpt
Automated Tester	186,737	14-Oct-12	Mfg Eqpt
Diffusion	187,756	7-Oct-12	Mfg Eqpt
Diffusion	187,757	7-Oct-12	Mfg Eqpt
Diffusion	193,751	14-Oct-12	Mfg Eqpt
Etch Tool Loader/Unloader	193,773	21-Oct-12	Mfg Eqpt
Etch Tool Loader/Unloader	193,774	21-Oct-12	Mfg Eqpt
Diffusion	195,750	22-Oct-12	Mfg Eqpt
Automated Tester	196,744	22-Oct-12	Mfg Eqpt
Frontside/Backside Tool	201,739	6-Nov-12	Mfg Eqpt
Frontside/Backside Tool	201,740	6-Nov-12	Mfg Eqpt
Wafer Transfer System	210,768	16-Dec-12	Mfg Eqpt
Frontside/Backside Tool	212,738	20-Dec-12	Mfg Eqpt
Automated Tester	141751A	7-Oct-12	Mfg Eqpt
Diffusion	157734A	16-Dec-12	Mfg Eqpt
Diffusion	165733A	16-Dec-12	Mfg Eqpt
Diffusion	177746A	16-Dec-12	Mfg Eqpt
Wafer Transfer System	177747A	16-Dec-12	Mfg Eqpt
Wafer Transfer System	181737A	16-Dec-12	Mfg Eqpt
Automated Tester	186737A	7-Oct-12	Mfg Eqpt
Diffusion	187756A	16-Dec-12	Mfg Eqpt
Diffusion	187757A	16-Dec-12	Mfg Eqpt
Etch Tool Loader/Unloader	193773A	7-Oct-12	Mfg Eqpt
Etch Tool Loader/Unloader	193774A	7-Oct-12	Mfg Eqpt
Diffusion	195750A	16-Dec-12	Mfg Eqpt

[Nothing follows]

EX-31.1

EXHIBIT 31.1

CERTIFICATIONS

I, Thomas H. Werner, certify that:

1 I have reviewed this Quarterly Report on Form 10-Q of SunPower Corporation;

2 Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3 Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4 The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)           Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)           Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)           Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)           Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5 The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a)           All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b)           Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:  May 7, 2013

/S/ THOMAS H. WERNER

Thomas H. Werner

President, Chief Executive Officer and Director

(Principal Executive Officer)

EX-31.2

EXHIBIT 31.2

CERTIFICATIONS

I, Charles D. Boynton, certify that:

1 I have reviewed this Quarterly Report on Form 10-Q of SunPower Corporation;

2 Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3 Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4 The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)           Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)           Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)           Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)           Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5 The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

(a)           All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

(b)           Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date:  May 7, 2013

/S/ CHARLES D. BOYNTON

Charles D. Boynton

Executive Vice President and Chief Financial Officer

(Principal Financial Officer)

EX-32.1

EXHIBIT 32.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER AND

CHIEF FINANCIAL OFFICER PURSUANT TO

18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of SunPower Corporation (the “Company”) on Form 10-Q for the period ended March 31, 2013 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), each of Thomas H. Werner and Charles D. Boynton certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of his knowledge and belief:

(1)  The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)  The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

  Dated: May 7, 2013

/S/ THOMAS H. WERNER

Thomas H. Werner

President, Chief Executive Officer and Director

(Principal Executive Officer)

/S/ CHARLES D. BOYNTON

Charles D. Boynton

Executive Vice President and Chief Financial Officer

(Principal Financial Officer)

The foregoing certification is being furnished solely pursuant to 18 U.S.C. Section 1350 and is not being filed as part of the Report or as a separate disclosure statement.

XML

Fair Value Measurements (Details) (USD $)	3 Months Ended													3 Months Ended
	Mar. 31, 2013	Mar. 31, 2013 Fair Value, Measurements, Recurring [Member]		Dec. 30, 2012 Fair Value, Measurements, Recurring [Member]		Mar. 31, 2013 Fair Value, Inputs, Level 1 [Member] Fair Value, Measurements, Recurring [Member]		Dec. 30, 2012 Fair Value, Inputs, Level 1 [Member] Fair Value, Measurements, Recurring [Member]		Mar. 31, 2013 Fair Value, Inputs, Level 2 [Member] Fair Value, Measurements, Recurring [Member]		Dec. 30, 2012 Fair Value, Inputs, Level 2 [Member] Fair Value, Measurements, Recurring [Member]		Mar. 31, 2013 Held-to-maturity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other than Temporary Impairment Losses, Investments														$ 0
Fair Value Measurements Transfers Between Measurement Levels	0
Money market funds		97,000,000	[1]	117,254,000	[1]	97,000,000	[1]	117,254,000	[1]	0	[1]	0	[1]
Foreign currency derivatives		7,652,000		1,275,000		0		0		7,652,000		1,275,000
Debt derivatives		13,946,000		2,327,000		0		0		13,946,000		2,327,000
Total assets		118,598,000		120,856,000		97,000,000		117,254,000		21,598,000		3,602,000
Foreign currency derivatives		6,346,000		4,891,000		0		0		6,346,000		4,891,000
Debt derivatives		13,946,000		2,327,000		0		0		13,946,000		2,327,000
Total liabilities		$ 20,292,000		$ 7,218,000		$ 0		$ 0		$ 20,292,000		$ 7,218,000

[1] The Company's cash equivalents consist of money market fund instruments which are classified as available-for-sale and within Level 1 of the fair value hierarchy because they are valued using quoted market prices for identical instruments in active markets.

XML

Net Loss Per Share of Common Stock - Anti-Dilutive Securities (Details) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	313	410
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	5,687	4,413
Debentures 475 Percent [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	8,712	8,712
Total [Member] | Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	9,532

XML

Debt and Credit Sources (Details) (USD $)	3 Months Ended					1 Months Ended		3 Months Ended					3 Months Ended					3 Months Ended		12 Months Ended										3 Months Ended																3 Months Ended										0 Months Ended
	Mar. 31, 2013	Apr. 01, 2012		Dec. 30, 2012	Jan. 01, 2012	Feb. 28, 2012 Total [Member]	Mar. 31, 2013 Total [Member]	Mar. 31, 2013 Bond Hedge [Member]		Jul. 01, 2012 Bond Hedge [Member]	Dec. 30, 2012 Bond Hedge [Member]		Mar. 31, 2013 Embedded Cash Conversion Option [Member]	Apr. 01, 2012 Embedded Cash Conversion Option [Member]	Mar. 31, 2013 Convertible Debt [Member]	Dec. 30, 2012 Convertible Debt [Member]	Mar. 31, 2013 4.50% Debentures [Member]	Mar. 31, 2013 4.50% Debentures [Member] Bond Hedge [Member]		Dec. 30, 2012 4.50% Debentures [Member] Bond Hedge [Member]		Dec. 30, 2012 4.50% Debentures [Member] Embedded Cash Conversion Option [Member]	Mar. 31, 2013 4.50% Debentures [Member] Convertible Debt [Member]	Dec. 30, 2012 4.50% Debentures [Member] Convertible Debt [Member]	Apr. 01, 2010 4.50% Debentures [Member] Convertible Debt [Member]	Mar. 31, 2013 4.75% Debentures [Member]	Mar. 31, 2013 4.75% Debentures [Member] Convertible Debt [Member]	Dec. 30, 2012 4.75% Debentures [Member] Convertible Debt [Member]	May 31, 2009 4.75% Debentures [Member] Convertible Debt [Member]	Jan. 01, 2012 4.75% Debentures [Member] Convertible Debt [Member] Minimum [Member]	Mar. 31, 2013 IFC Mortgage Loan [Member]	Dec. 30, 2012 IFC Mortgage Loan [Member]	Mar. 31, 2013 IFC Mortgage Loan [Member] Mortgages [Member]	Dec. 30, 2012 IFC Mortgage Loan [Member] Mortgages [Member]	May 06, 2010 IFC Mortgage Loan [Member] Mortgages [Member]	Mar. 31, 2013 IFC Mortgage Loan [Member] Total [Member]	Dec. 30, 2012 IFC Mortgage Loan [Member] Total [Member]	Mar. 31, 2013 CEDA Loan [Member] Loans Payable [Member]	Dec. 30, 2012 CEDA Loan [Member] Loans Payable [Member]	Jun. 30, 2011 CEDA Loan [Member] Loans Payable [Member]	Dec. 29, 2010 CEDA Loan [Member] Loans Payable [Member]	Mar. 31, 2013 Deutsche Bank Letter of Credit Facility August 2011 [Member] Letter of Credit [Member]	Dec. 30, 2012 Deutsche Bank Letter of Credit Facility August 2011 [Member] Letter of Credit [Member]	Mar. 31, 2013 Deutsche Bank Trust [Member] Letter of Credit [Member]	Dec. 30, 2012 Deutsche Bank Trust [Member] Letter of Credit [Member]	Mar. 31, 2013 Credit Agricole Revolving Credit Facility [Member] Line of Credit [Member]	Dec. 30, 2012 Credit Agricole Revolving Credit Facility [Member] Line of Credit [Member]	Mar. 31, 2013 Tenesol Other Long-term Debt [Member]		Dec. 30, 2012 Tenesol Other Long-term Debt [Member]		Mar. 31, 2013 Other Long-term Debt [Member]		Dec. 30, 2012 Other Long-term Debt [Member]	Mar. 31, 2013 Combined Other Long-term Debt [Member]	Feb. 16, 2012 1.25% Debentures [Member]	Mar. 31, 2013 1.25% Debentures [Member]	Jan. 01, 2012 1.25% Debentures [Member] Convertible Debt [Member]	Feb. 28, 2007 1.25% Debentures [Member] Convertible Debt [Member]	Mar. 31, 2013 0.75% Debentures [Member]	Mar. 31, 2013 0.75% Debentures [Member] Convertible Debt [Member]	Dec. 30, 2012 0.75% Debentures [Member] Convertible Debt [Member]
Debt Instrument [Line Items]
Short-term Debt																															$ 15,000,000	$ 12,500,000																				$ 74,000		$ 134,000
Long-term Debt																																	55,000,000	62,500,000				30,000,000	30,000,000													25,281,000		1,234,000
Maturities of Long-term Debt [Abstract]
2013	7,574,000																						0				0						7,500,000					0								0						74,000	[1]								0
2014	346,137,000																						0				230,000,000						15,000,000					0								100,000,000	275,000,000					1,137,000	[1]								0
2016	15,975,000																						0				0						15,000,000					0								0						975,000	[1]								0
2017	15,952,000																						0				0						15,000,000					0								0						952,000	[1]								0
Beyond 2017	53,642,000																						0				0						2,500,000					30,000,000								0						21,142,000	[1]								0
Carrying Value															442,710,000	438,629,000							212,631,000	208,550,000			230,000,000	230,000,000																																	79,000	79,000
Fair Value															480,327,000	447,789,000							250,823,000	228,750,000			229,425,000	218,960,000																																	79,000	79,000
Gain (loss) on mark-to-market derivatives	0	13,000	[2]
Debt Instrument, Convertible, Conversion Price																		22.53	[3]	22.53	[3]	22.53								26.40
Option Indexed to Issuer's Equity, Indexed Shares								11,100,000																					8,700,000
Repayments of Long-term Debt																																																								199,800,000
Debt Instrument, Interest Rate, Stated Percentage																	4.50%									4.75%														8.50%																	1.25%			0.75%
Own-share Lending Arrangement, Shares, Outstanding					1,800,000
Debt Instrument, Maximum Borrowing Amount																																			75,000,000
Restricted Cash and Cash Equivalents																																	9,200,000	6,400,000				3,000,000
Own-share Lending Arrangement, Shares, Outstanding, Value					11,200,000
Stock price								$ 11.54	[3]		$ 5.49	[3]
Long-term debt	116,638,000			375,661,000
Line of Credit Facility, Maximum Borrowing Capacity																																												200,000,000			275,000,000
Line of Credit Facility, Basis Spread																																														0.60%
Line of Credit Facility, Amount Outstanding																																										703,300,000	725,300,000	1,800,000	17,500,000
Letters of Credit Outstanding, Amount	32,000,000
Letter of Credit Facility, Maximum Borrowing Capacity, 2012																																											725,000,000
Letter of Credit Facility, Maximum Borrowing Capacity, 2013																																											771,000,000
Letter of Credit Facility, Maximum Borrowing Capacity, 2014																																											878,000,000
Letter of Credit Facility, Maximum Borrowing Capacity, 2015																																											936,000,000
Letter of Credit Facility, Maximum Borrowing Capacity, 2016																																											1,000,000,000
Debt Instrument, Basis Spread on Variable Rate																																			3.00%
Liquidity Support Facility, Available Capacity							325,000,000
Debt Instrument, Commitment Fee																																			0.50%
Debt Instrument, Borrowing Fee, Percent of Principal																																			1.00%
Debt Instrument, Prepayment Premium																																			1.00%
Line of Credit Facility, Basis Spread on Base Loan Rate																																														0.25%
Line of Credit Facility, Basis Spread on Federal Funds Rate																																														0.50%
Line of Credit Facility, Basis Spread on LIBOR Rate																																														1.00%
Debt Instrument, Basis Spread on Variable Rate, Period Two																																			4.25%
debt instruments, basis spread on variable rate, period three																																			5.00%
Debt, Long-term and Short-term, Combined Amount	705,434,000														480,079,000	480,079,000							250,000,000	250,000,000	250,000,000		230,000,000	230,000,000					70,000,000								30,000,000					100,000,000						25,355,000						198,600,000	200,000,000		79,000	79,000
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net								11,600,000		1,600,000			(11,600,000)	(1,600,000)
Liquidity Support Agreement, Maximum Capacity							600,000,000
Liquidity Support Agreement, Unrestricted Cash, Cash Equivalents and Unused Borrowing Capacity, Threshold for Liquidity Support						100,000,000	100,000,000
Liquidity Support Facility, Warrant Issued, Number of Common Stock Shares						9,531,677
Liquidity Support Facility, Warrant Issued, Exercise Price Per Share						$ 7.8685
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage																																														0.06%
Proceeds from issuance of project loans, net of issuance costs	24,061,000	0	[2]
Debt, Long-term and Short-term, Combined Amount																																	$ 70,000,000			$ 70,000,000	$ 75,000,000											$ 1,000,000	[1]	$ 1,100,000	[1]			$ 1,368,000	$ 300,000

[1] The balance of Other debt excludes payments related to capital leases which are disclosed in Note 7. "Commitments and Contingencies" to these condensed consolidated financial statements.

[2] As adjusted to conform to the current period presentation for solar power systems leased and to be leased (see Note 1)

[3] The valuation model utilizes these inputs to value the right but not the obligation to purchase one share at $22.53. The Company utilized a Black-Scholes valuation model to value the 4.50% Bond Hedge and embedded cash conversion option. The underlying input assumptions were determined as follows:(i)Stock price. The closing price of the Company's common stock on the last trading day of the quarter.(ii)Exercise price. The exercise price of the 4.50% Bond Hedge and the embedded cash conversion option.(iii)Interest rate. The Treasury Strip rate associated with the life of the 4.50% Bond Hedge and the embedded cash conversion option.(iv)Stock volatility. The volatility of the Company's common stock over the life of the 4.50% Bond Hedge and the embedded cash conversion option.(v)Credit risk adjustment. Represents the weighted average of the credit default swap rate of the counterparties.

XML

Stock-Based Compensation (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	$ 8,516	$ 12,541
Stock Options [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	0	326
Restricted Stock Units (RSUs) [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	8,811	13,574
Change in stock based compensation capitalized in inventory [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs, Capitalized Amount	(295)	(1,359)
Americas [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	778	1,129
EMEA [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	441	965
APAC [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	491	265
Cost of Sales [Member] | Americas [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	778	1,129
Cost of Sales [Member] | EMEA [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	441	965
Cost of Sales [Member] | APAC [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	491	265
Research and Development Expense [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	1,122	1,780
Selling General and Administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Allocated Share-based Compensation Expense	$ 5,684	$ 8,402

XML

Commitments and Contingencies Commitments and Contingencies - Advances From Customers (Details) (USD $)					12 Months Ended					3 Months Ended
	Mar. 31, 2013		Dec. 30, 2012		Dec. 28, 2008 Customer, Polysilicon Purchaser [Member]	Mar. 31, 2013 Customer, Polysilicon Purchaser [Member]	Dec. 30, 2012 Customer, Polysilicon Purchaser [Member]	Mar. 31, 2013 Customer, AUOSP [Member]	Dec. 30, 2012 Customer, AUOSP [Member]	Mar. 31, 2013 Solar Power Products Advance Purchasers [Member]	Dec. 30, 2012 Solar Power Products Advance Purchasers [Member]
Schedule of Estimated Utilization of Advances From Customers [Line Items]
Customer Advances and Deposits						$ 55,300,000	$ 56,100,000	$ 188,600,000	$ 190,100,000
Customer Advances, Current	70,127,000	[1]	59,648,000	[1]		9,300,000	8,100,000	10,800,000	8,800,000
Customer Advances, Noncurrent	223,828,000	[1]	236,082,000	[1]		46,000,000	48,000,000	177,800,000	181,300,000
Advances Received From Customer					40,000,000					50,000,000	49,500,000
2013	64,612
2014	22,060
2015	26,387
2016	30,713
2017	35,039
Thereafter	115,144
Total	293,955
Letters of Credit Outstanding, Amount	$ 32,000,000

[1] The Company has related party balances in connection with transactions made with unconsolidated entities in which the Company has a direct equity investment. These related party balances are recorded within the "Prepaid expenses and other current assets," "Other long-term assets," "Accounts payable," "Customer advances, current portion," and "Customer advances, net of current portion" financial statement line items in the Condensed Consolidated Balance Sheets (see Note 4, Note 7, and Note 8).

XML

Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block]

The following table summarizes the consolidated stock-based compensation expense by line item in the Condensed Consolidated Statements of Operations:

	Three Months Ended
(In thousands)	March 31, 2013		April 1, 2012
Cost of Americas revenue	$	778	$	1,129
Cost of EMEA revenue	441		965
Cost of APAC revenue	491		265
Research and development	1,122		1,780
Sales, general and administrative	5,684		8,402
Total stock-based compensation expense	$	8,516	$	12,541

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]

The following table summarizes the consolidated stock-based compensation expense by type of awards:

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012
Employee stock options	$	—		$	326
Restricted stock units	8,811			13,574
Change in stock-based compensation capitalized in inventory	(295		)	(1,359		)
Total stock-based compensation expense	$	8,516		$	12,541

XML

Segment Information - Major Customer (Details) (Americas [Member])	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012
NRG Solar, Inc. [Member]
Revenue, Major Customer [Line Items]
Revenue as a percentage of total revenue	44.00%	23.00%
Mid American Energy Holdings Company [Member]
Revenue, Major Customer [Line Items]
Revenue as a percentage of total revenue	13.00%

XML

Balance Sheet Components (Tables)

3 Months Ended

Mar. 31, 2013

Balance Sheet Related Disclosures [Abstract]

Accounts Receivable Trade [Table Text Block]

	As of
(In thousands)	March 31, 2013			December 30, 2012
Accounts receivable, net:
Accounts receivable, gross (1)	$	338,147		$	429,977
Less: allowance for doubtful accounts	(31,009		)	(26,773		)
Less: allowance for sales returns	(4,129		)	(5,054		)
	$	303,009		$	398,150

(1) Includes short-term finance receivables associated with solar power systems leased of $4.5 million as of both March 31, 2013 and December 30, 2012, respectively.

Schedule of Inventory, Current [Table Text Block]

Inventories:
Raw materials	$	88,179	$	89,331
Work-in-process	55,668		50,627
Finished goods	137,520		151,428
	$	281,367	$	291,386

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]

	As of
(In thousands)	March 31, 2013		December 30, 2012
Prepaid expenses and other current assets:
VAT receivables, current portion	$	102,592	$	97,041
Foreign currency derivatives	7,652		1,275
Deferred project costs	135,695		305,980
Deferred costs for solar power systems to be leased	24,148		31,419
Other receivables (2)	63,795		104,640
Other prepaid expenses	40,076		25,230
Other current assets	58,379		47,468
	$	432,337	$	613,053

(2) Includes tolling agreements with suppliers in which the Company provides polysilicon required for silicon ingot manufacturing and procures the manufactured silicon ingots from the suppliers (see Notes 7 and 8).

Investments In Power And Distribution Projects [Table Text Block]

Project assets - plants and land:
Project assets — plants	$	80,645	$	61,862
Project assets — land	18,148		21,645
	$	98,793	$	83,507
Project assets - plants and land, current portion	$	90,429	$	75,911
Project assets - plants and land, net of current portion	$	8,364	$	7,596

Property, Plant and Equipment [Table Text Block]

Property, plant and equipment, net:
Land and buildings	$	20,109		$	20,109
Leasehold improvements	226,987			221,378
Manufacturing equipment (3)	545,970			531,289
Computer equipment	75,557			75,438
Furniture and fixtures	8,274			8,178
Solar power systems (4)	34,621			12,501
Solar power systems leased	212,572			163,003
Solar power systems to be leased	65,290			89,423
Construction-in-process	17,719			34,110
	1,207,099			1,155,429
Less: accumulated depreciation (5)	(400,956		)	(380,520		)
	$	806,143		$	774,909

(3) The Company's mortgage loan agreement with International Finance Corporation ("IFC") is collateralized by certain manufacturing equipment with a net book value of $168.1 million and $152.9 million as of March 31, 2013 and December 30, 2012, respectively. The Company also provided security for advance payments received from a third party in the form of collateralized manufacturing equipment with a net book value of $19.1 million and $16.5 million as of March 31, 2013 and December 30, 2012, respectively.

(4) Includes $20.1 million of solar power systems associated with sale-leaseback transactions under the financing method (see Note 7).

(5) Total depreciation expense was $23.6 million and $29.1 million for the three months ended March 31, 2013 and April 1, 2012, respectively.

Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country [Table Text Block]

	As of
(In thousands)	March 31, 2013		December 30, 2012
Property, plant and equipment, net by geography (6):
Philippines	$	359,171	$	367,708
United States	385,687		343,710
Mexico	32,158		32,409
Europe	28,411		29,292
Other	716		1,790
	$	806,143	$	774,909

(6) Property, plant and equipment, net are based on the physical location of the assets.

Interest expense [Table Text Block]

The below table presents the cash and non-cash interest expense capitalized to property, plant and equipment and project assets during the three months ended March 31, 2013 and April 1, 2012, respectively.

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012
Interest expense:
Interest cost incurred	$	(27,544	)	$	(19,631	)
Cash interest cost capitalized - property, plant and equipment	228			288
Non-cash interest cost capitalized - property, plant and equipment	57			133
Cash interest cost capitalized - project assets - plant and land	123			278
Non-cash interest cost capitalized - project assets - plant and land	102			231
Interest expense	$	(27,034	)	$	(18,701	)

Schedule of Other Assets, Noncurrent [Table Text Block]

	As of
(In thousands)	March 31, 2013		December 30, 2012
Other long-term assets:
Equity method investments	$	111,184	$	111,516
Bond hedge derivative	13,946		2,327
Cost method investments	10,240		14,918
Long-term financing receivables	93,540		67,742
Long-term debt issuance costs	29,870		38,185
Other	43,109		41,375
	$	301,889	$	276,063

Schedule of Accrued Liabilities [Table Text Block]

	As of
(In thousands)	March 31, 2013		December 30, 2012
Accrued liabilities:
VAT payables	$	6,447	$	2,049
Foreign currency derivatives	6,346		4,891
Short-term warranty reserves	9,254		9,054
Interest payable	8,926		9,672
Deferred revenue	37,197		32,507
Employee compensation and employee benefits	42,491		40,750
Restructuring reserve	21,723		29,477
Short-term residential lease financing	26,581		25,153
Short-term sale-leaseback financing (Note 7)	6,423		—
Other	116,299		93,819
	$	281,687	$	247,372

Other liabilities [Table Text Block]

Other long-term liabilities:
Embedded conversion option derivatives	$	13,946	$	2,327
Long-term warranty reserves	110,295		107,803
Deferred revenue	147,665		128,936
Unrecognized tax benefits	35,551		35,022
Long-term residential lease financing	17,364		11,411
Long-term sale-leaseback financing (Note 7)	27,427		—
Other	59,109		50,120
	$	411,357	$	335,619

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

Accumulated other comprehensive loss:
Cumulative translation adjustment	$	(3,662	)	$	(2,319	)
Net unrealized gain on derivatives	2,592			(243		)
Deferred taxes	(492		)	41
	$	(1,562	)	$	(2,521	)

XML

Foreign Currency Derivatives (Details) (USD $)	Mar. 31, 2013	Dec. 30, 2012
Designated as Hedging Instrument [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Net	$ 2,878,000	$ 519,000
Designated as Hedging Instrument [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Net	14,000	410,000
Not Designated as Hedging Instrument [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Net	4,774,000	756,000
Not Designated as Hedging Instrument [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Net	6,332,000	4,481,000
Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member]
Notional Amount of Derivatives [Abstract]
Derivative Asset, Notional Amount	25,900,000	26,400,000
Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Net	298,000	0
Foreign Exchange Forward [Member] | Designated as Hedging Instrument [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Net	4,000	23,000
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member]
Notional Amount of Derivatives [Abstract]
Derivative Asset, Notional Amount	49,700,000	121,800,000
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Net	4,156,000	731,000
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Net	5,714,000	4,455,000
Foreign Exchange Option [Member] | Designated as Hedging Instrument [Member]
Notional Amount of Derivatives [Abstract]
Derivative Asset, Notional Amount	53,600,000	71,000,000
Foreign Exchange Option [Member] | Designated as Hedging Instrument [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Net	2,580,000	519,000
Foreign Exchange Option [Member] | Designated as Hedging Instrument [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Net	10,000	387,000
Foreign Exchange Option [Member] | Not Designated as Hedging Instrument [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Net	618,000	25,000
Foreign Exchange Option [Member] | Not Designated as Hedging Instrument [Member] | Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Net	$ 618,000	$ 26,000

XML

Restructuring (Details) (USD $)	3 Months Ended
	Mar. 31, 2013 employees		Dec. 30, 2012	Apr. 01, 2012
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning of period	$ 29,477,000
Restructuring charges	(337,000)			3,046,000
Payments	(7,417,000)
Restructuring liability, end of period	21,723,000
Restructuring and Related Cost, Cost Incurred to Date	121,889,000
October 2012 Restructuring Plan [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges	(578,000)		30,200,000	0
Restructuring and Related Cost, Number of Positions Eliminated	900
Restructuring and Related Cost, Number of Positions Eliminated, Percent of Workforce	15.00%
Restructuring and Related Cost, Expected Percentage of Costs to be Settled With Cash	90.00%
Restructuring and Related Cost, Cost Incurred to Date	29,649,000
October 2012 Restructuring Plan [Member] | Minimum [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Expected Cost	33,000,000
October 2012 Restructuring Plan [Member] | Maximum [Member]
Restructuring Reserve [Roll Forward]
Restructuring and Related Cost, Expected Cost	40,000,000
October 2012 Restructuring Plan [Member] | Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning of period	24,439,000
Restructuring charges	(1,083,000)			0
Payments	(5,606,000)
Restructuring liability, end of period	17,750,000
Restructuring and Related Cost, Cost Incurred to Date	27,970,000
October 2012 Restructuring Plan [Member] | Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning of period	714,000
Restructuring charges	70,000			0
Payments	(135,000)
Restructuring liability, end of period	649,000
Restructuring and Related Cost, Cost Incurred to Date	784,000
October 2012 Restructuring Plan [Member] | Other Restructuring Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning of period	358,000	[1]
Restructuring charges	435,000	[1]		0
Payments	(482,000)	[1]
Restructuring liability, end of period	311,000	[1]
Restructuring and Related Cost, Cost Incurred to Date	895,000
Legacy Restructuring Plans
Restructuring Reserve [Roll Forward]
Restructuring charges	241,000			3,046,000
Restructuring and Related Cost, Cost Incurred to Date	92,240,000
Legacy Restructuring Plans | Non-cash Impairment Charges [Member]
Restructuring Reserve [Roll Forward]
Restructuring charges	0			0
Restructuring and Related Cost, Cost Incurred to Date	60,153,000
Legacy Restructuring Plans | Employee Severance [Member]
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning of period	60,000
Restructuring charges	0			944,000
Payments	(41,000)
Restructuring liability, end of period	19,000
Restructuring and Related Cost, Cost Incurred to Date	19,836,000
Legacy Restructuring Plans | Facility Closing [Member]
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning of period	2,436,000
Restructuring charges	217,000			1,770,000
Payments	(510,000)
Restructuring liability, end of period	2,143,000
Restructuring and Related Cost, Cost Incurred to Date	4,423,000
Legacy Restructuring Plans | Other Restructuring Costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring liability, beginning of period	1,470,000	[1]
Restructuring charges	24,000	[1]		332,000
Payments	(643,000)	[1]
Restructuring liability, end of period	851,000	[1]
Restructuring and Related Cost, Cost Incurred to Date	$ 7,828,000

[1] Other costs primarily represent associated legal services and costs associated with the decommissioning of Fab 1 assets.

XML

Other Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012		Dec. 30, 2012
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 79,252			$ 79,318
Finite-Lived Intangible Assets, Accumulated Amortization	(78,655)			(78,574)
Finite-Lived Intangible Assets, Net	597			744
Amortization of Intangible Assets	147	2,782	[1]
Patents, trade names and purchased technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	49,892			49,892
Finite-Lived Intangible Assets, Accumulated Amortization	(49,892)			(49,892)
Finite-Lived Intangible Assets, Net	0			0
Purchased In-process Research and Development [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	1,000			1,000
Finite-Lived Intangible Assets, Accumulated Amortization	(403)			(361)
Finite-Lived Intangible Assets, Net	597			639
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	28,360			28,426
Finite-Lived Intangible Assets, Accumulated Amortization	(28,360)			(28,321)
Finite-Lived Intangible Assets, Net	$ 0			$ 105

[1] As adjusted to conform to the current period presentation for solar power systems leased and to be leased (see Note 1)

XML

Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest [Abstract]
Income (loss) before income taxes and equity in earnings (loss) of unconsolidated investees	$ (58,647)	$ (69,749)
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Provision for income taxes	$ 2,989	$ 1,356

XML

Equity Method Investments (Details) (USD $) Share data in Millions, unless otherwise specified	3 Months Ended				3 Months Ended		12 Months Ended
	Mar. 31, 2013	Apr. 01, 2012	Dec. 30, 2012	Mar. 31, 2013 CCPV [Member]	Dec. 30, 2012 Diamond Energy [Member]	Mar. 31, 2013 AUOSP [Member]	Jan. 01, 2012 Woongjin Energy [Member]	Jul. 03, 2011 Woongjin Energy [Member]	Jun. 30, 2010 Woongjin Energy [Member]	Mar. 31, 2013 CCPV [Member]	Mar. 31, 2013 Diamond Energy [Member]	Mar. 31, 2013 AUOSP [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	$ 111,184,000		$ 111,516,000
Subsidiary or Equity Method Investee, Additional Issuance of Shares to Investors Outside the Consolidated Group									15.9
Equity Method Investment, Shares Sold							15.5
Accounts receivable	6,958,000		17,847,000
Accounts payable	37,841,000		63,469,000
Payments made to joint ventures for products/services	118,943,000	179,988,000
Payments to Acquire Equity Method Investments					3,000,000
Joint Venture, Energy Output Committed to Purchase in Years Two Through Seven						80.00%
Future Financing Obligation											1,000,000	241,000,000
Potential Additional Financing Obligation if Requested by Joint Venture												50,000,000
Future Financing Obligations Upon Close of Joint Venture Agreement										16,000,000
Notes, Loans and Financing Receivable, Gross, Noncurrent	$ 1,040,000		$ 1,040,000								$ 1,000,000
Loan receivable, interest rate											1.00%
Equity Method Investment, Ownership Percentage				25.00%	25.00%	50.00%	6.00%	31.00%

XML

Transactions with Total and Total S.A.

3 Months Ended

Mar. 31, 2013

Transactions with Total [Abstract]

Transactions With Total and Total S.A. [Text Block]

TRANSACTIONS WITH TOTAL AND TOTAL S.A.

On April 28, 2011, the Company and Total entered into a Tender Offer Agreement (the "Tender Offer Agreement"), pursuant to which, on May 3, 2011, Total commenced a cash tender offer to acquire up to 60% of the Company's outstanding shares of former class A common stock and up to 60% of the Company's outstanding shares of former class B common stock (the "Tender Offer") at a price of $23.25 per share for each class. The offer expired on June 14, 2011 and Total accepted for payment on June 21, 2011 a total of 34,756,682 shares of the Company's former class A common stock and 25,220,000 shares of the Company's former class B common stock, representing 60% of each class of its outstanding common stock as of June 13, 2011, for a total cost of approximately $1.4 billion.

On December 23, 2011, the Company entered into a Stock Purchase Agreement with Total, under which it agreed to acquire 100% of the equity interest of Tenesol S.A. from Total for $165.4 million in cash. The Tenesol acquisition was consummated on January 31, 2012. Contemporaneously with the execution of the Tenesol Stock Purchase Agreement, the Company entered into a Private Placement Agreement with Total, under which Total agreed to purchase, and the Company agreed to issue and sell, 18.6 million shares of the Company's common stock for a purchase price of $8.80 per share, thereby increasing Total's ownership to approximately 66% of the Company's outstanding common stock as of that date. The sale was completed contemporaneously with the closing of the Tenesol acquisition.

Credit Support Agreement

In connection with the Tender Offer, the Company and Total S.A. entered into a Credit Support Agreement (the "Credit Support Agreement") under which Total S.A. agreed to enter into one or more guarantee agreements (each a "Guaranty") with banks providing letter of credit facilities to the Company in support of certain Company businesses and other permitted purposes. Total S.A. will guarantee the payment to the applicable issuing bank of the Company's obligation to reimburse a draw on a letter of credit and pay interest thereon in accordance with the letter of credit facility between such bank and the Company. The Credit Support Agreement became effective on June 28, 2011 (the "CSA Effective Date"). Under the Credit Support Agreement, at any time from the CSA Effective Date until the fifth anniversary of the CSA Effective Date, the Company may request that Total S.A. provide a Guaranty in support of the Company's payment obligations with respect to a letter of credit facility. Total S.A. is required to issue and enter into the Guaranty requested by the Company, subject to certain terms and conditions that may be waived by Total S.A., and subject to certain other conditions.

In consideration for the commitments of Total S.A., under the Credit Support Agreement, the Company is required to pay Total S.A. a guarantee fee for each letter of credit that is the subject of a Guaranty and was outstanding for all or part of the preceding calendar quarter. The Company is also required to reimburse Total S.A. for payments made under any Guaranty and certain expenses of Total S.A., plus interest on both. In both the three months ended March 31, 2013 and April 1, 2012, the Company incurred guaranty fees of $1.8 million, to Total S.A.

The Company has agreed to undertake certain actions, including, but not limited to, ensuring that the payment obligations of the Company to Total S.A. rank at least equal in right of payment with all of the Company's other present and future indebtedness, other than certain permitted secured indebtedness. The Company has also agreed to refrain from taking certain actions, including refraining from making any equity distributions so long as it has any outstanding repayment obligation to Total S.A. resulting from a draw on a guaranteed letter of credit.

The Credit Support Agreement will terminate following the fifth anniversary of the CSA Effective Date, after the later of the payment in full of all obligations thereunder and the termination or expiration of each Guaranty provided thereunder.

Affiliation Agreement

In connection with the Tender Offer, the Company and Total entered into an Affiliation Agreement that governs the relationship between Total and the Company following the close of the Tender Offer (the "Affiliation Agreement"). Until the expiration of a standstill period (the "Standstill Period"), Total, Total S.A., any of their respective affiliates and certain other related parties (the "Total Group") may not effect, seek, or enter into discussions with any third-party regarding any transaction that would result in the Total Group beneficially owning shares of the Company in excess of certain thresholds, or request the Company or the Company's independent directors, officers or employees, to amend or waive any of the standstill restrictions applicable to the Total Group. The standstill provisions of the Affiliation Agreement do not apply to securities issued in connection with the Liquidity Support Agreement described below.

The Affiliation Agreement imposes certain limitations on the Total Group's ability to seek to effect a tender offer or merger to acquire 100% of the outstanding voting power of the Company and imposes certain limitations on the Total Group's ability to transfer 40% or more of outstanding shares or voting power of the Company to a single person or group that is not a direct or indirect subsidiary of Total S.A. During the Standstill Period, no member of the Total Group may, among other things, solicit proxies or become a participant in an election contest relating to the election of directors to the Company's Board of Directors.

The Affiliation Agreement provides Total with the right to maintain its percentage ownership in connection with any new securities issued by the Company, and Total may also purchase shares on the open market or in private transactions with disinterested stockholders, subject in each case to certain restrictions.

In accordance with the terms of the Affiliation Agreement, on July 1, 2011, the Company's Board of Directors expanded the size of the Board of Directors to eleven members and elected six nominees from Total as directors, following which the Board of Directors was composed of the Chief Executive Officer of the Company (who also serves as the chairman of the Company's Board of Directors), four existing non-Total designated members of the Company's Board of Directors, and six directors designated by Total. Directors designated by Total also serve on certain committees of the Company's Board of Directors. On the first anniversary of the consummation of the Tender Offer on June 21, 2012, the size of the Company's Board of Directors was reduced to nine members and one non-Total designated director and one director designated by Total resigned from the Company's Board of Directors. If the Total Group's ownership percentage of Company common stock declines, the number of members of the Company's Board of Directors that Total is entitled to nominate to the Company's Board of Directors will be further reduced as set forth in the Affiliation Agreement.

The Affiliation Agreement also imposes certain restrictions with respect to the Company's and the Company's Board of Directors' ability to take certain actions, including specifying certain actions that require approval by the directors other than the directors appointed by Total and other actions that require stockholder approval by Total.

Affiliation Agreement Guaranty

Total S.A. has entered into a guaranty (the "Affiliation Agreement Guaranty") pursuant to which Total S.A. unconditionally guarantees the full and prompt payment of Total S.A.'s, Total's and each of Total S.A.'s direct and indirect subsidiaries' payment obligations under the Affiliation Agreement and the full and prompt performance of Total S.A.'s, Total's and each of Total S.A.'s direct and indirect subsidiaries' representations, warranties, covenants, duties, and agreements contained in the Affiliation Agreement.

Research & Collaboration Agreement

In connection with the Tender Offer, Total and the Company have entered into a Research & Collaboration Agreement (the "R&D Agreement") that establishes a framework under which the parties engage in long-term research and development collaboration ("R&D Collaboration"). The R&D Collaboration encompasses a number of different projects ("R&D Projects"), with a focus on advancing technology in the area of photovoltaics. The primary purpose of the R&D Collaboration is to: (i) maintain and expand the Company's technology position in the crystalline silicon domain; (ii) ensure the Company's industrial competitiveness; and (iii) guarantee a sustainable position for both the Company and Total to be best-in-class industry players.

The R&D Agreement enables a joint committee (the "R&D Strategic Committee") to identify, plan and manage the R&D Collaboration. Due to the impracticability of anticipating and establishing all of the legal and business terms that are and will be applicable to the R&D Collaboration or to each R&D Project, the R&D Agreement sets forth broad principles applicable to the parties' potential R&D Collaboration, and the R&D Collaboration Committee establishes the particular terms governing each particular R&D Project consistent with the terms set forth in the R&D Agreement.

Registration Rights Agreement

In connection with the Tender Offer, Total and the Company entered into a customary registration rights agreement (the "Registration Rights Agreement") related to Total's ownership of Company shares. The Registration Rights Agreement provides Total with shelf registration rights, subject to certain customary exceptions, and up to two demand registration rights in any 12-month period, also subject to certain customary exceptions. Total also has certain rights to participate in any registrations of securities initiated by the Company. The Company will generally pay all costs and expenses incurred by the Company and Total in connection with any shelf or demand registration (other than selling expenses incurred by Total). The Company and Total have also agreed to certain indemnification rights. The Registration Rights Agreement terminates on the first date on which: (i) the shares held by Total constitute less than 5% of the then-outstanding common stock; (ii) all securities held by Total may be immediately resold pursuant to Rule 144 promulgated under the Securities and Exchange Act of 1934 (the "Exchange Act") during any 90-day period without any volume limitation or other restriction; or (iii) the Company ceases to be subject to the reporting requirements of the Exchange Act.

Stockholder Rights Plan

On April 28, 2011, prior to the execution of the Tender Offer Agreement, the Company entered into an amendment (the "Rights Agreement Amendment") to the Rights Agreement, dated August 12, 2008, by and between the Company and Computershare Trust Company, N.A., as Rights Agent (the "Rights Agreement"), in order to, among other things, render the rights therein inapplicable to each of: (i) the approval, execution or delivery of the Tender Offer Agreement; (ii) the commencement or consummation of the Tender Offer; (iii) the consummation of the other transactions contemplated by the Tender Offer Agreement and the related agreements; and (iv) the public or other announcement of any of the foregoing.

On June 14, 2011, the Company entered into a second amendment to the Rights Agreement (the "Second Rights Agreement Amendment"), in order to, among other things, exempt Total, Total S.A. and certain of their affiliates and certain members of a group of which they may become members from the definition of "Acquiring Person" such that the rights issuable pursuant to the Rights Agreement will not become issuable in connection with the completion of the Tender Offer.

By-laws Amendment

On June 14, 2011, the Board of Directors approved the amendment of the Company's By-laws (the "By-laws"). The changes are required under the Affiliation Agreement. The amendments: (i) allow any member of the Total Group to call a meeting of stockholders for the sole purpose of considering and voting on a proposal to effect a Terra Merger (as defined in the Affiliation Agreement) or a Transferee Merger (as defined in the Affiliation Agreement); (ii) provide that the number of directors of the Board shall be determined from time to time by resolution adopted by the affirmative vote of a majority of the entire Board at any regular or special meeting; (iii) require, prior to the termination of the Affiliation Agreement, a majority of independent directors' approval to amend the By-laws so long as Total, together with Total S.A.'s subsidiaries collectively own at least 30% of the voting securities of the Company as well as require, prior to the termination of the Affiliation Agreement, Total's written consent during the Terra Stockholder Approval Period (as defined in the Affiliation Agreement) to amend the By-laws; and (iv) make certain other conforming changes to the By-laws. In addition, in November 2011, the By-laws were amended to remove restrictions prohibiting stockholder consents in writing.

Liquidity Support Agreement with Total S.A.

The Company is party to an agreement with a customer to construct the California Valley Solar Ranch, a solar park. Part of the debt financing necessary for the customer to pay for the construction of this solar park is being provided by the Federal Financing Bank in reliance on a guarantee of repayment provided by the Department of Energy (the "DOE") under a loan guarantee program. On February 28, 2012, the Company entered into a Liquidity Support Agreement with Total S.A. and the DOE, and a series of related agreements with Total S.A. and Total, under which Total S.A. has agreed to provide the Company, or cause to be provided, additional liquidity under certain circumstances to a maximum amount of $600.0 million ("Liquidity Support Facility"). Total S.A. is required to provide liquidity support to the Company under the facility, and the Company is required to accept such liquidity support from Total S.A., if either the Company's actual or projected unrestricted cash, cash equivalents, and unused borrowing capacity are reduced below $100.0 million, or the Company fails to satisfy any financial covenant under its indebtedness. In either such event, subject to a $600.0 million aggregate limit, Total S.A. is required to provide the Company with sufficient liquidity support to increase the amount of its unrestricted cash, cash equivalents and unused borrowing capacity to above $100.0 million, and to restore compliance with its financial covenants. On December 24, 2012, Total S.A. agreed to guarantee the Company's revolving credit facility with Credit Agricole, which reduced the capacity available under the Liquidity Support Facility by $275.0 million. The Liquidity Support Facility is available until the completion of the solar park, expected to be completed before the end of fiscal 2013, and, under certain conditions, up to December 31, 2016, at which time all outstanding guarantees will expire (except for the Total S.A. guarantee of the Credit Agricole facility which extends through maturity) and all outstanding debt under the facility will become due. The use of the Liquidity Support Facility is not limited to direct obligations related to the solar park, and is available for general corporate purposes, but the Company has agreed to conduct its operations, and use any proceeds from such facility, in ways that minimize the likelihood of Total S.A. being required to provide further support. In connection with the Liquidity Support Agreement, the Company also entered into a Compensation and Funding Agreement with Total S.A., and a Private Placement Agreement and a Revolving Credit and Convertible Loan Agreement with Total, which implement the terms of the Liquidity Support Agreement and Compensation Funding Agreement.

Compensation and Funding Agreement

In connection with the Liquidity Support Agreement, on February 28, 2012, the Company entered into a Compensation and Funding Agreement (the "Compensation and Funding Agreement") with Total S.A., pursuant to which, among other things, the Company and Total S.A. established the parameters for the terms of the Liquidity Support Facility and any liquidity injections that may be required to be provided by Total S.A. to the Company pursuant to the Liquidity Support Agreement. The Company has agreed in the Compensation and Funding Agreement to use commercially reasonable efforts to assist Total S.A. in the performance of its obligations under the Liquidity Support Agreement and to conduct, and to act in good faith in conducting, its affairs in a manner such that Total S.A.'s obligation under the Liquidity Support Agreement to provide liquidity injections will not be triggered or, if triggered, will be minimized. The Company has also agreed to use any cash provided under the facility in such a way as to minimize the need for further liquidity support. The Compensation and Funding Agreement required the Company to issue, in consideration for Total S.A.'s agreement to provide the Liquidity Support Facility, a warrant ("the Upfront Warrant") to Total that is exercisable to purchase a number of shares of the Company's common stock equal to $75.0 million, divided by the volume-weighted average price for the Company's common stock for the 30 trading-day period ending on the trading day immediately preceding the date of the calculation. The Upfront Warrant will be exercisable at any time for seven years after its issuance, provided that, so long as at least $25.0 million of the Company's convertible debt remains outstanding, such exercise will not cause "any person," including Total S.A., to, directly or indirectly, including through one or more wholly-owned subsidiaries, become the "beneficial owner" (as such terms are defined in Rule 13d-3 and Rule 13d-5 under the Securities and Exchange Act of 1934, as amended), of more than 74.99% of the voting power of the Company's common stock at such time, a circumstance which would trigger the repurchase or conversion of the Company's existing convertible debt. On February 28, 2012, the Company issued to Total the Upfront Warrant to purchase 9,531,677 shares of the Company's common stock with an exercise price of $7.8685, subject to adjustment for customary anti-dilution and other events.

Liquidity support may be provided by Total S.A. or through its affiliates in the form of revolving non-convertible debt, convertible debt, equity, guarantees of Company indebtedness or other forms of liquidity support agreed to by the Company, depending on the amount outstanding under the facility immediately prior to provision of the applicable support among other factors. The Company is required to compensate Total S.A. for any liquidity support actually provided, and the form and amount of such compensation depends on the form and amount of support provided, with the amount of compensation generally increasing with the amount of support provided over time. Such compensation is to be provided in a variety of forms including guarantee fees, warrants to purchase common stock, interest on amounts borrowed, and discounts on equity issued.

During the term of the Compensation and Funding Agreement, the Company will make certain cash payments to Total S.A. within 30 days after the end of each calendar quarter during for the term of the agreement as follows: (i) quarterly payment of a commitment fee in an amount equal to 0.25% of the unused portion of the $600.0 million Liquidity Support Facility as of the end of such quarter; and (ii) quarterly payment of a guarantee fee in an amount equal to 2.75% per annum of the average amount of the Company's indebtedness that is guaranteed by Total S.A. pursuant to any guaranty issued in accordance with the terms of the Compensation and Funding Agreement during such quarter. Any payment obligations of the Company to Total S.A. under the Compensation and Funding Agreement that are not paid when due shall accrue interest until paid in full at a rate equal to 6-month U.S. LIBOR as in effect from time to time plus 5.00% per annum.

On December 24, 2012 Total S.A. issued a guarantee for the Company's obligations under the revolving credit facility with Credit Agricole. The issuance of the guarantee reduced the capacity available under the Liquidity Support Facility from $600.0 million to $325.0 million. The Company is required to pay Total S.A. an annual guarantee fee of 2.75% of the outstanding amount under the Credit Agricole facility. The guarantee reduced interest rates payable under, and removed certain financial and restrictive covenants in the Credit Agricole facility (see Note 9).

In the three months ended March 31, 2013 and April 1, 2012, the Company incurred commitment fees of $1.7 million and $0.6 million, respectively, to Total S.A.

Master Agreement

On December 23, 2011, the Company also entered into a Master Agreement with Total, under which the Company and Total agreed to a framework of transactions related to the Tenesol acquisition and Private Placement Agreement. Additionally, Total has agreed to pursue several negotiations on additional agreements related to directly investing in the Company's R&D program over a multi-year period, purchase of modules and develop a multi-megawatt project using the Company's products. The Company and Total amended the Master Agreement on February 20, 2013 to clarify that the development of the multi-megawatt project using the Company's products shall mean development of up to 10 C-7 Tracker demonstration projects at a total cost to Total of not more than $2.5 million provided agreements for such projects are entered into before December 31, 2013.

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Commitments and Contingencies (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2013	Apr. 01, 2012	Dec. 30, 2012 SolarSystem
Loss Contingencies [Line Items]
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals	$ 79,100,000
Capital Lease Obligations [Abstract]
Project Financing Agreement, Lease Terms	20 years
Power Purchase Agreement, Term	20 years
Purchase Commitments [Abstract]
Purchase Commitments, Supply and Price Period	10 years
Purchase Commitments
Total obligations related to non-cancellable orders	200,000,000
Long-term supply agreements with suppliers	2,400,000,000
Commitments to non-consolidated joint ventures	101,700,000
Net cashflows offset, price paid by suppliers for polysilicon, minimum	248,600,000
Product Warranties [Abstract]
Standard Product Warranty Term, Solar Panels	25 years
Industry Standard Product Warranty Term, Solar Panels	25 years
Standard Product Warranty Term, Inverter, Minimum	5 years
Standard Product Warranty Term, Inverter, Maximum	10 years
Standard Product Warranty Term, Worksmanship	10 years
Movement in Standard and Extended Product Warranty, Increase (Decrease) [Roll Forward]
Balance at the beginning of the period	117,172,000	94,323,000	94,323,000
Accruals for warranties issued during the period	4,455,000	9,448,000
Settlements made during the period	(2,078,000)	932,000
Balance at the end of the period	119,549,000	102,839,000	117,172,000
Liabilities Associated with Uncertain Tax Positions
Unrecognized tax benefits	35,551,000		35,022,000
Loss Contingency, Settlement Agreement, Consideration			19,700,000
Sytems Repurchase Under Performance Guarantee			0
Minimum Lease Payments, Sale Leaseback Transactions	37,000,000
AUOSP [Member]
Loss Contingencies [Line Items]
Future Financing Obligations Year One	150,211,000
Future Financing Obligations Year Two	96,770,000
Future Financing Obligations	246,981,000
Capital Lease Obligations [Member]
Capital Lease Obligations [Abstract]
Capital Leases, Future Minimum Payments Due, Next Twelve Months	1,475,000
Capital Leases, Future Minimum Payments Due in Two Years	1,379,000
Capital Leases, Future Minimum Payments Due in Three Years	1,181,000
Capital Leases, Future Minimum Payments Due in Four Years	941,000
Capital Leases, Future Minimum Payments Due in Five Years	1,330,000
Capital Leases, Future Minimum Payments Due Thereafter	1,885,000
Capital Leases, Future Minimum Payments Due	8,191,000
Operating Lease Obligation [Member]
Operating Leases Obligations [Abstract]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	17,355,000
Operating Leases, Future Minimum Payments, Due in Two Years	17,479,000
Operating Leases, Future Minimum Payments, Due in Three Years	15,966,000
Operating Leases, Future Minimum Payments, Due in Four Years	15,249,000
Operating Leases, Future Minimum Payments, Due in Five Years	12,749,000
Operating Leases, Future Minimum Payments, Due Thereafter	85,502,000
Operating Lease, Future Minimum Payments Due	164,300,000
Purchase Commitment [Member]
Purchase Commitments
2013	716,696,000
2014	451,338,000
2015	360,508,000
2016	326,726,000
2017	194,845,000
Thereafter	517,095,000
Total future purchase commitments	$ 2,567,208,000

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Equity Method Investments (Tables)

3 Months Ended

Mar. 31, 2013

Equity Method Investments and Joint Ventures [Abstract]

Related Party Transactions with Equity Method Investees [Table Text Block]

Related Party Transactions with Equity Method Investees:

	As of
(In thousands)	March 31, 2013		December 30, 2012
Accounts receivable	$	6,958	$	17,847
Accounts payable	37,841		63,469
Other long-term assets:
Long-term note receivable	1,040		1,040

	Three Months Ended
(In thousands)	March 31, 2013		April 1, 2012
Payments made to equity method investees for products/services	$	118,943	$	179,988

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Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Schedule of Future Minimum Lease Payments [Table Text Block]

As of March 31, 2013, future minimum obligations under non-cancellable capital and operating leases are as follows:

	Capital Lease		Operating Lease
(In thousands)	Amount		Amount
Year
2013 (remaining nine months)	$	1,475	$	17,355
2014	1,379		17,479
2015	1,181		15,966
2016	941		15,249
2017	1,330		12,749
Thereafter	1,885		85,502
	$	8,191	$	164,300

Unrecorded Unconditional Purchase Obligations Disclosure [Table Text Block]

Future purchase obligations under non-cancellable purchase orders and long-term supply agreements as of March 31, 2013 are as follows:

(In thousands)	Amount
Year
2013 (remaining nine months)	$	716,696
2014	451,338
2015	360,508
2016	326,726
2017	194,845
Thereafter	517,095
	$	2,567,208

As of March 31, 2013, total obligations related to non-cancellable purchase orders totaled $0.2 billion and long-term supply agreements with suppliers totaled $2.4 billion. Of the total future purchase commitments of $2.6 billion as of March 31, 2013, $101.7 million are for commitments to related parties.

Advance to Supplier Obligations [Table Text Block]

The Company's future prepayment obligations related to these agreements as of March 31, 2013 are as follows:

(In thousands)	Amount
Year
2013 (remaining nine months)	$	72,813
2014	65,791
	$	138,604

Schedule of Estimated Utilization of Advances From Customers [Table Text Block]

The estimated utilization of advances from customers as of March 31, 2013 is as follows:

(In thousands)	Amount
Year
2013 (remaining nine months)	$	64,612
2014	22,060
2015	26,387
2016	30,713
2017	35,039
Thereafter	115,144
	$	293,955

Schedule of Product Warranty Liability [Table Text Block]

Provisions for warranty reserves charged to cost of revenue were $4.5 million and $9.4 million in the three months ended March 31, 2013 and April 1, 2012, respectively:

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012
Balance at the beginning of the period	$	117,172		$	94,323
Accruals for warranties issued during the period	4,455			9,448
Settlements made during the period	(2,078		)	(932		)
Balance at the end of the period	$	119,549		$	102,839

Future financing obligations [Table Text Block]

The Company's future financing obligations related to these agreements as of March 31, 2013 are as follows:

(In thousands)	Amount
Year
2013 (remaining nine months)	$	150,211
2014	96,770
	$	246,981

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Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013 segments	Apr. 01, 2012
Revenue by Geography [Line Items]
Number of Reportable Segments	3
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Revenue	$ 635,433	$ 494,131
Cost of revenue	576,120	448,883
Gross margin	59,313	45,248
Cost of Revenue by Region [Abstract]
Cost of Revenue	576,120	448,883
Amortization of other intangible assets	147	2,782	[1]
Stock-based compensation expense	8,516	12,541
Depreciation	23,620	29,071	[1]
Americas [Member]
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Revenue	484,122	281,493
Cost of revenue	416,081	242,119
Utility and power plant projects	60,801	(86,203)
Cost of Revenue by Region [Abstract]
Cost of Revenue	416,081	242,119
Utility and power plan projects	128,939	(70,445)
Stock-based compensation expense	778	1,129
Non-cash interest expense	220	218
Gross margin by region, as a percentage of total revenue	14.00%	14.00%
Depreciation	9,815	14,061
Americas CODM [Member]
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Revenue	423,321	367,696
Cost of revenue	285,785	306,880
Cost of Revenue by Region [Abstract]
Cost of Revenue	285,785	306,880
Gross margin by region, as a percentage of total revenue	32.00%	17.00%
EMEA [Member]
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Revenue	68,652	156,110
Cost of revenue	91,494	156,845
Change in European government incentives	0	193
Cost of Revenue by Region [Abstract]
Cost of Revenue	91,494	156,845
Stock-based compensation expense	441	965
Change in European government incentives	0	193
Non-cash interest expense	129	176
Gross margin by region, as a percentage of total revenue	(33.00%)	0.00%
Depreciation	5,833	10,967
EMEA CODM [Member]
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Revenue	68,652	155,917
Cost of revenue	90,738	151,423
Cost of Revenue by Region [Abstract]
Cost of Revenue	90,738	151,423
Gross margin by region, as a percentage of total revenue	(32.00%)	3.00%
APAC [Member]
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Revenue	82,659	56,528
Cost of revenue	68,545	49,919
Cost of Revenue by Region [Abstract]
Cost of Revenue	68,545	49,919
Stock-based compensation expense	491	265
Non-cash interest expense	179	65
Gross margin by region, as a percentage of total revenue	17.00%	12.00%
Depreciation	7,972	4,043
APAC CODM [Member]
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract]
Cost of revenue	67,617	48,309
Cost of Revenue by Region [Abstract]
Cost of Revenue	$ 67,617	$ 48,309
Gross margin by region, as a percentage of total revenue	18.00%	15.00%

[1] As adjusted to conform to the current period presentation for solar power systems leased and to be leased (see Note 1)

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Commitments and Contingencies - Advances to Suppliers (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 30, 2012
Concentration Risk [Line Items]
Advances to suppliers, current portion	64,681,000	50,282,000
Advance to Suppliers Obligation Year One (2013)	72,813,000
Advance to Suppliers Obligation Year Two (2014)	65,791,000
Total Future Advances to Suppliers	138,604,000
Advance to Suppliers	355,700,000	351,400,000
Payments for inventories or services	8,300,000
Supplier Concentration Risk [Member] | Supplier One [Member] | Advance [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	75.00%	76.00%
Supplier Concentration Risk [Member] | Supplier Two [Member] | Advance [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	25.00%	23.00%

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Debt and Credit Sources (Tables)

3 Months Ended

Mar. 31, 2013

Debt Instrument [Line Items]

Schedule of Maturities of Debt [Table Text Block]

The following table summarizes the Company's outstanding debt as of March 31, 2013 and the related maturity dates:

			Payments Due by Period
(In thousands)	Face Value		2013 (remaining nine months)		2014		2015		2016		2017		Beyond 2017
Convertible debt:
4.50% debentures	$	250,000	$	—	$	—	$	250,000	$	—	$	—	$	—
4.75% debentures	230,000		—		230,000		—		—		—		—
0.75% debentures	79		—		—		79		—		—		—
IFC mortgage loan	70,000		7,500		15,000		15,000		15,000		15,000		2,500
CEDA loan	30,000		—		—		—		—		—		30,000
Credit Agricole revolving credit facility	100,000		—		100,000		—		—		—		—
Other debt (1)	25,355		74		1,137		1,075		975		952		21,142
	$	705,434	$	7,574	$	346,137	$	266,154	$	15,975	$	15,952	$	53,642

(1) The balance of Other debt excludes payments related to capital leases which are disclosed in Note 7. "Commitments and Contingencies" to these condensed consolidated financial statements.

Schedule of Long-term Debt Instruments [Table Text Block]

The following table summarizes the Company's outstanding convertible debt:

	March 31, 2013						December 30, 2012
(In thousands)	Carrying Value		Face Value		Fair Value (1)		Carrying Value		Face Value		Fair Value (1)
Convertible debt:
4.50% debentures	$	212,631	$	250,000	$	250,823	$	208,550	$	250,000	$	228,750
4.75% debentures	230,000		230,000		229,425		230,000		230,000		218,960
0.75% debentures	79		79		79		79		79		79
	$	442,710	$	480,079	$	480,327	$	438,629	$	480,079	$	447,789

(1) The fair value of the convertible debt was determined using Level 1 inputs based on quarterly market prices as reported by an independent pricing source.

IFC Mortgage Loan [Member]

Debt Instrument [Line Items]

Schedule of Debt [Table Text Block]

The Company's outstanding borrowings under the mortgage loan agreement with IFC on its Condensed Consolidated Balance Sheets are as follows:

	As of
(In thousands)	March 31, 2013		December 30, 2012
Short-term debt	$	15,000	$	12,500
Long-term debt	55,000		62,500
	$	70,000	$	75,000

CEDA Loan [Member]

Debt Instrument [Line Items]

Schedule of Debt [Table Text Block]

The Company's outstanding borrowings under the loan agreement with CEDA on its Condensed Consolidated Balance Sheets is as follows:

	As of
(In thousands)	March 31, 2013		December 30, 2012
Long-term debt	$	30,000	$	30,000

Credit Agricole Revolving Credit Facility [Member]

Debt Instrument [Line Items]

Schedule of Debt [Table Text Block]

The Company's outstanding borrowings under the revolving credit facility with Credit Agricole on its Condensed Consolidated Balance Sheets is as follows:

	As of
(In thousands)	March 31, 2013		December 30, 2012
Short-term debt	$	100,000	—
Long-term debt	—		275,000

Other Debt Obligations [Member]

Debt Instrument [Line Items]

Schedule of Debt [Table Text Block]

The Company's other outstanding borrowings on its Condensed Consolidated Balance Sheets are as follows:

	As of
(In thousands)	March 31, 2013		December 30, 2012
Short-term debt	$	74	$	134
Long-term debt	25,281		1,234
	$	25,355	$	1,368

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Foreign Currency Derivatives (Tables)

3 Months Ended

Mar. 31, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]

The following table presents information about the Company's hedge instruments measured at fair value on a recurring basis as of March 31, 2013 and December 30, 2012, all of which utilize Level 2 inputs under the fair value hierarchy:

(In thousands)	Balance Sheet Classification	March 31, 2013		December 30, 2012
Assets	Prepaid expenses and other current assets
Derivatives designated as hedging instruments:
Foreign currency option contracts		$	2,580	$	519
Foreign currency forward exchange contracts		298		—
		$	2,878	$	519
Derivatives not designated as hedging instruments:
Foreign currency option contracts		$	618	$	25
Foreign currency forward exchange contracts		4,156		731
		$	4,774	$	756
Liabilities	Accrued liabilities
Derivatives designated as hedging instruments:
Foreign currency option contracts		$	10	$	387
Foreign currency forward exchange contracts		4		23
		$	14	$	410
Derivatives not designated as hedging instruments:
Foreign currency option contracts		$	618	$	26
Foreign currency forward exchange contracts		5,714		4,455
		$	6,332	$	4,481

Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block]

The following table summarizes the pre-tax amount of unrealized gain or loss recognized in "Accumulated other comprehensive income" ("OCI") in "Stockholders' equity" in the Condensed Consolidated Balance Sheets:

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012
Derivatives designated as cash flow hedges:
Gain (loss) in Accumulated OCI at the beginning of the period	$	(243	)	$	10,473
Unrealized gain (loss) recognized in OCI (effective portion)	2,448			(2,425		)
Less: Loss (gain) reclassified from Accumulated OCI to revenue (effective portion)	387			(3,325		)
Net gain (loss) on derivatives	$	2,835		$	(5,750	)
Gain in Accumulated OCI at the end of the period	$	2,592		$	4,723

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance [Table Text Block]

The following table summarizes the amount of gain or loss recognized in "Other, net" in the Condensed Consolidated Statements of Operations in the three months ended March 31, 2013 and April 1, 2012:

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012
Derivatives designated as cash flow hedges:
Loss recognized in "Other, net" on derivatives (ineffective portion and amount excluded from effectiveness testing)	$	(789	)	$	(365	)
Derivatives not designated as hedging instruments:
Gain (loss) recognized in "Other, net"	$	166		$	(1,290	)

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The Company and Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

The Company and Summary of Significant Accounting Policies [Text Block]

THE COMPANY AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

The Company

SunPower Corporation (together with its subsidiaries, the "Company" or "SunPower") is a vertically integrated solar products and solutions company that designs, manufactures and delivers high-performance solar systems worldwide, serving as a one-stop shop for residential, commercial, and utility-scale power plant customers.

The Company's President and Chief Executive Officer, as the chief operating decision maker ("CODM"), has organized the Company, manages resource allocations and measures performance of the Company's activities among three regional segments: (i) the Americas Segment, (ii) the EMEA Segment, and (iii) the APAC Segment. The Americas Segment includes both North and South America. The EMEA Segment includes European countries, as well as the Middle East and Africa. The APAC segment includes all Asia-Pacific countries.

On June 21, 2011, the Company became a majority owned subsidiary of Total Gas & Power USA, SAS("Total"), a subsidiary of Total S.A. ("Total S.A."), through a tender offer and Total's purchase of 60% of the outstanding former class A common stock and former class B common stock of the Company as of June 13, 2011. On January 31, 2012, Total purchased an additional 18.6 million shares of the Company's common stock in a private placement, thereby increasing Total's ownership to approximately 66% of the Company's outstanding common stock as of that date (see Note 2).

Basis of Presentation and Preparation

Principles of Consolidation

The condensed consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America ("United States" or "U.S.") and include the accounts of the Company, all of its subsidiaries and special purpose entities, as appropriate under consolidation accounting guidelines. Intercompany transactions and balances have been eliminated in consolidation. The assets of the special purpose entities that the Company sets up related to project financing for customers are not designed to be available to service the general liabilities and obligations of the Company in certain circumstances.

Reclassifications

Certain prior period balances have been reclassified to conform to the current period presentation in the Company's condensed consolidated financial statements and the accompanying notes. Such reclassifications had no effect on previously reported results of operations or retained earnings. As reflected in the Company's Annual Report on Form 10-K for the fiscal year ended December 30, 2012 ("2012 Form 10-K"), in connection with the growth of its residential lease program, during the fourth quarter of fiscal 2012 the Company began to separately classify both the cost of the leased assets and related investing cash flows based upon the nature of the lease entered into. The Company has reclassified prior period interim balances to conform to the current period presentation, which resulted in an increase in operating cash flows of $15.9 million for the three months ended April 1, 2012.

Fiscal Years

The Company has a 52-to-53-week fiscal year that ends on the Sunday closest to December 31. Accordingly, every fifth or sixth year will be a 53-week fiscal year. Both fiscal 2013 and 2012 are 52-week fiscal years. The first quarter of fiscal 2013 ended on March 31, 2013, while the first quarter of fiscal 2012 ended on April 1, 2012. Both the first quarter of fiscal 2013 and fiscal 2012 were 13-week quarters.

Management Estimates

The preparation of the condensed consolidated financial statements in conformity with U.S. generally accepted accounting principles ("U.S. GAAP") requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Significant estimates in these condensed consolidated financial statements include percentage-of-completion for construction projects; allowances for doubtful accounts receivable and sales returns; inventory and project asset write-downs; stock-based compensation; estimates for future cash flows and economic useful lives of property, plant and equipment and other long-term assets; fair value of financial instruments; valuation of certain accrued liabilities including accrued warranty, restructuring, and termination of supply contracts reserves; valuation of debt without the conversion feature; and income taxes and tax valuation allowances. Actual results could materially differ from those estimates.

Summary of Significant Accounting Policies

Noncontrolling Interest

Noncontrolling interest represents the portion of net assets in a consolidated subsidiary that are not attributable, directly or indirectly, to the Company. In the first quarter of fiscal 2013, the Company entered into a facility with a third-party investor under which the investor was determined to hold a noncontrolling interest in an entity fully consolidated by the Company. The net assets of the shared entity are attributed to the controlling and noncontrolling interests based on the terms of the governing contractual arrangements. The Company further determined the hypothetical liquidation at book value method ("HLBV Method") to be the appropriate method for attributing net assets to the controlling and noncontrolling interests as this method most closely mirrors the economics of the governing contractual arrangements. Under the HLBV Method, the Company allocates recorded income (loss) to each investor based on the change, during the reporting period, of the amount of net assets each investor is entitled to under the governing contractual arrangements in a liquidation scenario.

Other than as described above, there have been no significant changes in the Company's significant accounting policies for the three months ended March 31, 2013, as compared to the significant accounting policies described in the 2012 Form 10-K.

Recent Accounting Pronouncements

In March 2013, the Financial Accounting Standards Board ("FASB") and International Accounting Standards Board ("IASB") issued common disclosure requirements that are intended to enhance comparability between financial statements prepared in accordance with U.S. GAAP and those prepared in accordance with International Financial Reporting Standards ("IFRS"). This new guidance is applicable to companies that have financial instruments or derivatives that are either offset in the balance sheet (presented on a net basis) or subject to an enforceable master netting arrangement or similar arrangement. The requirement does not change the existing offsetting eligibility criteria or the permitted balance sheet presentation for those instruments that meet the eligibility criteria. However, once this disclosure requirement becomes effective, companies will also be required to disclose information about financial instruments and derivatives instruments that have been offset and related arrangements and to provide both net (offset amounts) and gross information in the notes to the financial statements for relevant assets and liabilities that are offset. The disclosure requirement becomes effective retrospectively in the first quarter of the Company's fiscal year 2014. The Company does not expect that the requirement will have a material impact on its condensed consolidated financial statements as it is disclosure only in nature.

In March 2013, the FASB amended its guidance related to foreign currency matters requiring the release of the cumulative translation adjustment into net income when an entity ceases to have a controlling financial interest in a subsidiary or a group of assets within a foreign entity. The amendment will become effective for the Company in the first quarter of fiscal 2014. The Company does not expect that the requirement will have a material impact on its condensed consolidated financial statements.

In February 2013, the FASB amended its disclosure guidance related to the presentation of comprehensive income. The amendment requires reporting of the impact of significant reclassifications out of accumulated other comprehensive income or loss on the line items on the statement of operations, if a reclassification is required in its entirety in one reporting period. The amendment became effective for the Company in the first quarter of fiscal 2013 and did not have a significant impact on its condensed consolidated financial statements.

There has been no issued accounting guidance not yet adopted by the Company that it believes is material or potentially material to its condensed consolidated financial statements.

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Net Loss Per Share of Common Stock (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

The following table presents the calculation of basic and diluted net loss per share:

	Three Months Ended
(In thousands, except per share amounts)	March 31, 2013			April 1, 2012
Basic and Diluted net loss per share:
Numerator:  Net loss available to common stockholders	$	(54,696	)	$	(74,530	)
Denominator: Basic and diluted weighted-average common shares	119,553			111,785
Basic and diluted net loss per share	$	(0.46	)	$	(0.67	)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

The following is a summary of outstanding anti-dilutive potential common stock which was excluded from income per diluted share in the following periods:

	As of
(In thousands)	March 31, 2013 (1)	April 1, 2012 (1)
Stock options	313	410
Restricted stock units	5,687	4,413
Warrants (under the CSO2015)	*	*
Upfront Warrants (held by Total)	9,532	**
4.75% debentures	8,712	8,712
0.75% debentures	*	*

(1) As a result of the net loss per share for the three months ended March 31, 2013 and April 1, 2012, the inclusion of all potentially dilutive stock options, restricted stock units, and common shares under the 4.75% debentures would be anti-dilutive. Therefore, those stock options, restricted stock units and shares were excluded from the computation of the weighted-average shares for diluted net loss per share for such period.

* The Company's average stock price during the three months ended March 31, 2013 and April 1, 2012 did not exceed the conversion price for the amended warrants (under the CSO2015) and 0.75% debentures and those instruments were thus non-dilutive in such periods.

** The Upfront Warrants were issued in the first quarter of fiscal 2012. The Company's stock price as of the last business day of the first quarter of fiscal 2012 did not exceed the exercise price of the Upfront Warrants.

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Fair Value Measurements Fair Value Measurements - Debt Derivatives (Details) (Bond Hedge [Member], USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2013		Dec. 30, 2012
Statement [Line Items]
Stock price	$ 11.54	[1]	$ 5.49	[1]
Interest rate	0.41%	[1]	0.40%	[1]
Stock volatility	55.60%	[1]	59.90%	[1]
Credit risk adjustment	1.13%	[1]	1.07%	[1]
Maturity date	Feb. 18, 2015	[1]	Feb. 18, 2015	[1]
4.50% Debentures [Member]
Fair Value Disclosures [Abstract]
Option Indexed to Issuer's Equity, Strike Price	22.53	[1]	22.53	[1]

[1] The valuation model utilizes these inputs to value the right but not the obligation to purchase one share at $22.53. The Company utilized a Black-Scholes valuation model to value the 4.50% Bond Hedge and embedded cash conversion option. The underlying input assumptions were determined as follows:(i)Stock price. The closing price of the Company's common stock on the last trading day of the quarter.(ii)Exercise price. The exercise price of the 4.50% Bond Hedge and the embedded cash conversion option.(iii)Interest rate. The Treasury Strip rate associated with the life of the 4.50% Bond Hedge and the embedded cash conversion option.(iv)Stock volatility. The volatility of the Company's common stock over the life of the 4.50% Bond Hedge and the embedded cash conversion option.(v)Credit risk adjustment. Represents the weighted average of the credit default swap rate of the counterparties.

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Net Loss Per Share of Common Stock (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended			1 Months Ended
	Mar. 31, 2013	Apr. 01, 2012	Mar. 31, 2013 Bond Hedge [Member]	Feb. 28, 2012 Total [Member]	Mar. 31, 2013 Warrant [Member] 4.50% Debentures [Member] Minimum [Member] Embedded Derivative Financial Instruments [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Income (loss) from continuing operations	$ (54,696)	$ (74,530)
Basic and diluted	119,553,000	111,785,000
Basic and diluted	$ (0.46)	$ (0.67)
Incremental Common Shares Attributable to Conversion of Debt Securities	0
Option Indexed to Issuer's Equity, Indexed Shares			11,100,000
Option Indexed to Issuer's Equity, Strike Price					24.00
Liquidity Support Facility, Warrant Issued, Number of Common Stock Shares				9,531,677
Liquidity Support Facility, Warrant Issued, Exercise Price Per Share				$ 7.8685

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Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013		Dec. 30, 2012
Current assets:
Cash and cash equivalents	$ 505,587		$ 457,487
Restricted cash and cash equivalents, current portion	11,061		15,568
Accounts receivable, net	303,009		398,150
Costs and estimated earnings in excess of billings	37,244		36,395
Inventories	281,367		291,386
Advances to suppliers, current portion	64,681		50,282
Project assets - plants and land, current portion	90,429		75,911
Prepaid expenses and other current assets	432,337	[1]	613,053	[1]
Total current assets	1,725,715		1,938,232
Restricted cash and cash equivalents, net of current portion	18,106		31,396
Restricted long-term marketable securities	10,860		10,885
Property, plant and equipment, net	806,143	[2]	774,909	[2]
Project assets - plants and land, net of current portion	8,364		7,596
Other intangible assets, net	597		744
Advances to suppliers, net of current portion	291,043		301,123
Other long-term assets	301,889	[1]	276,063	[1]
Total assets	3,162,717		3,340,948
Current liabilities:
Accounts payable	333,684	[1]	414,335	[1]
Accrued liabilities	281,687		247,372
Billings in excess of costs and estimated earnings	222,853		225,550
Short-term debt	117,079		14,700
Customer advances, current portion	70,127	[1]	59,648	[1]
Total current liabilities	1,025,430		961,605
Long-term debt	116,638		375,661
Convertible debt	442,710		438,629
Customer advances, net of current portion	223,828	[1]	236,082	[1]
Other long-term liabilities	411,357		335,619
Total liabilities	2,219,963		2,347,596
Commitments and contingencies (Note 7)
Equity:
Preferred stock, $0.001 par value; 10,000,000 shares authorized; none issued and outstanding as of both March 31, 2013 and December 31, 2012	0		0
Common stock, $0.001 par value, 367,500,000 shares authorized; 125,804,792 shares issued, and 120,812,930 outstanding as of March 31, 2013; 123,315,990 shares issued, and 119,234,280 shares outstanding as of December 30, 2012	121		119
Additional paid-in capital	1,940,781		1,931,947
Accumulated deficit	(956,781)		(902,085)
Accumulated other comprehensive income (loss)	(1,562)		(2,521)
Treasury stock, at cost; 4,991,862 shares of common stock as of March 31, 2013; 4,081,710 shares of common stock as of December 30, 2012	(44,847)		(34,108)
Total stockholders' equity	937,712		993,352
Noncontrolling interest in subsidiary	5,042		0
Total equity	(942,754)		(993,352)
Total liabilities and equity	$ 3,162,717		$ 3,340,948

[1] The Company has related party balances in connection with transactions made with unconsolidated entities in which the Company has a direct equity investment. These related party balances are recorded within the "Prepaid expenses and other current assets," "Other long-term assets," "Accounts payable," "Customer advances, current portion," and "Customer advances, net of current portion" financial statement line items in the Condensed Consolidated Balance Sheets (see Note 4, Note 7, and Note 8).

[2] Property, plant and equipment, net are based on the physical location of the assets.

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Commitments and Contingencies - Future Financing Commitments (Details) (AUOSP [Member], USD $)	Mar. 31, 2013
AUOSP [Member]
Financing Commitment [Line Items]
Future Financing Obligations Year One	$ 150,211,000
Future Financing Obligations Year Two	96,770,000
Future Financing Obligation	$ 241,000,000

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Condensed Consolidated Statement of Stockholders' Equity (USD $) In Thousands, unless otherwise specified	Total USD ($)	Capital Units [Member]	Common Stock [Member] USD ($)	Additional Paid-in Capital [Member] USD ($)	Treasury Stock [Member] USD ($)	Accumulated Other Comprehensive Income (Loss) [Member] USD ($)	Retained Earnings [Member] USD ($)	Stockholders' Equity, Total [Member] USD ($)	Noncontrolling Interest [Member] USD ($)	Total [Member] USD ($)
Balances, beginning of the year at Dec. 30, 2012	$ 993,352		$ 119	$ 1,931,947	$ (34,108)	$ (2,521)	$ (902,085)	$ 993,352		$ 993,352
Shares issued, beginning of the year at Dec. 30, 2012		119,234
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss attributable to stockholders	(54,696)						(54,696)	(54,696)
Net loss attributable to noncontrolling interest	(7,273)								(7,273)
Net Loss	(61,969)									(61,969)
Comprehensive income	(53,737)					959		959		959
Issuance of common stock upon exercise of options, values				25				25		25
Issuance of common stock upon exercise of options, shares		9
Issuance of restricted stock to employees, net of cancellations, values			2	(2)
Issuance of restricted stock to employees, net of cancellations, shares		2,480
Stock-based compensation expense				8,811				8,811		8,811
Purchases of treasury stock, value					(10,739)			(10,739)		(10,739)
Purchases of treasury stock, shares		(910)
Contributions from noncontrolling interest	(12,315)								12,315	12,315
Balances, end of the year at Mar. 31, 2013	$ 942,754		$ 121	$ 1,940,781	$ (44,847)	$ (1,562)	$ (956,781)	$ 937,712	$ 5,042	$ 942,754
Shares issued, end of the year at Mar. 31, 2013		120,813

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The Company and Summary of Significant Accounting Policies The Company and Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 30, 2012
Accounting Policies [Line Items]
Number of Weeks in Fiscal Year	52	52
Number of Weeks in Presented Quarter	13	13
Property, Plant and Equipment, Other Types [Member]
Accounting Policies [Line Items]
Prior Period Reclassification Adjustment	15.9

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Subsequent Events Subsequent Events (Notes)

3 Months Ended

Mar. 31, 2013

Subsequent Event [Line Items]

Subsequent Events [Text Block]

SUBSEQUENT EVENTS

On April 4, 2013, the Company repaid $100.0 million of outstanding obligations under the revolving credit facility with Credit Agricole. Subsequent to this repayment, the Company had no outstanding obligations under this credit facility.

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Transactions with Total (Details) (USD $)	3 Months Ended						1 Months Ended	3 Months Ended			1 Months Ended											3 Months Ended
	Mar. 31, 2013	Jun. 28, 2011	Jun. 21, 2011	Jun. 14, 2011	Jun. 13, 2011	Apr. 28, 2011	Feb. 28, 2012 Total [Member]	Mar. 31, 2013 Total [Member]	Apr. 01, 2012 Total [Member]	Dec. 30, 2012 Total [Member]	Jan. 31, 2012 Total [Member] Private Placement [Member]	Jan. 31, 2012 Tenesol [Member] Total [Member]	Jun. 21, 2011 Total [Member]	Jun. 13, 2011 Total [Member]	Apr. 28, 2011 Total [Member]	Jun. 21, 2011 Total [Member] Common Class A [Member]	Jun. 13, 2011 Total [Member] Common Class A [Member]	Apr. 28, 2011 Total [Member] Common Class A [Member]	Jun. 21, 2011 Total [Member] Common Class B [Member]	Jun. 13, 2011 Total [Member] Common Class B [Member]	Apr. 28, 2011 Total [Member] Common Class B [Member]	Mar. 31, 2013 Total [Member]	Apr. 01, 2012 Total [Member]
Business Acquisition, Cost of Acquired Entity, Purchase Price												$ 165,400,000
Business Acquisition, Percentage of Voting Interests Acquired												100.00%
Sale of Stock, Number of Shares Issued in Transaction											18,600,000
Sale of Stock, Price Per Share											$ 8.80
Sale of Stock, Percentage of Ownership after Transaction											66.00%
Tender Offer Agreement, Date						4/28/2011
Tender Offer Agreement, Percentage of Outstanding Share to be Acquired Under Agreement															60.00%			60.00%
Tender Offer Agreement, Purchase Price per Share															$ 23.25			$ 23.25			$ 23.25
Tender Offer Agreement, Expiration Date				6/14/2011
Tender Offer Agreement, Payment Date			6/21/2011
Tender Offer Agreement, Shares Purchased																34,756,682			25,220,000
Tender Offer Agreement, Percentage of Outstanding Shares Acquired														60.00%			60.00%			60.00%
Tender Offer Agreement, Outstanding Shares Calculation Date					6/13/2011
Tender Offer Agreement, Date of European Commission Clearance		6/28/2011
Tender Offer Agreement, Total Purchase Price													1,400,000,000
Credit Support Agreement, Guaranty Fees Incurred																						1,800,000	1,800,000
Affiliation Agreement, Voting Power Restricted by Affiliation Agreement	100.00%
Affiliation Agreement, Percent of Shares Able to Transfer Restricted By Affiliation Agreement	40.00%
Registration Rights Agreement, Shares Held Minimum Percentage Threshold	5.00%
Registration Rights Agreement, Number Of Days Shares Can Be Resold Termination	90 days
By Laws Amendment, Minimum Percentage of Voting Interest Collectively Owned	30.00%
Liquidity Support Agreement, Maximum Capacity								600,000,000
Liquidity Support Agreement, Unrestricted Cash, Cash Equivalents and Unused Borrowing Capacity, Threshold for Liquidity Support							100,000,000	100,000,000
Liquidity Support Agreement, Utilized Capacity										275,000,000
Liquidity Support Facility, Warrant, Numerator For Warrant Shares Calculation							75,000,000
Liquidity Support Facility, Warrant, Minimum Amount of Outstanding Convertible Debt Required to be Outstanding							25,000,000
Liquidity Support Facility, Warrant, Maximum Ownership Percentage Allowed							74.99%
Liquidity Support Facility, Warrant, Trading Period For Warrant Shares Calculation							30 days
Liquidity Support Facility, Warrant Term							7 years
Liquidity Support Facility, Warrant Issued, Number of Common Stock Shares							9,531,677
Liquidity Support Facility, Warrant Issued, Exercise Price Per Share							$ 7.8685
Liquidity Support Facility, Time Period After Calendar Quarter For Required Cash Payments								30 days
Liquidity Support Facility, Unused Capacity, Commitment Fee Percentage								0.25%
Liquidity Support Facility, Guarantee Fee, Percent of Average Guaranteed Debt								2.75%
Liquidity Support Facility, Basis Spread LIBOR Rate								5.00%
Liquidity Support Facility, Available Capacity								325,000,000
Liquidity Support Facility, Commitment Fees								1,700,000	600,000
Master Agreement, Maximum R&D Funding								$ 2,500,000

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Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]

The following tables present details of the Company's acquired other intangible assets:

(In thousands)	Gross		Accumulated Amortization			Net
As of March 31, 2013
Patents, trade names and purchased technology	$	49,892	$	(49,892	)	$	—
Purchased in-process research and development	1,000		(403		)	597
Customer relationships and other	28,360		(28,360		)	—
	$	79,252	$	(78,655	)	$	597
As of December 30, 2012
Patents, trade names and purchased technology	$	49,892	$	(49,892	)	$	—
Purchased in-process research and development	1,000		(361		)	639
Customer relationships and other	28,426		(28,321		)	105
	$	79,318	$	(78,574	)	$	744

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Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012
Cash flows from operating activities:
Net Loss	$ (61,969)	$ (74,530)	[1]
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Stock-based compensation	8,516	12,541	[1]
Depreciation	23,620	29,071	[1]
Amortization of other intangible assets	147	2,782	[1]
Gain on mark-to-market derivatives	0	(13)	[1]
Other Noncash Income (Expense)	11,890	7,099	[1]
Amortization of debt issuance costs	1,094	1,019	[1]
Equity in earnings (loss) of unconsolidated investees	333	3,425	[1]
Third-party inventories write-down	0	9,045	[1]
Deferred income taxes and other tax liabilities	4,724	(2,306)	[1]
Changes in operating assets and liabilities, net of effect of aquisition:
Accounts receivable	60,340	87,672	[1]
Costs and estimated earnings in excess of billings	(849)	2,784	[1]
Inventories	(5,606)	(86,539)	[1]
Project assets	(35,250)	(39,027)	[1]
Prepaid expenses and other assets	197,489	(67,498)	[1]
Advances to suppliers	(4,319)	(15,724)	[1]
Accounts payable and other accrued liabilities	(28,825)	9,140	[1]
Billings in excess of costs and estimated earnings	(2,697)	(665)	[1]
Customer advances	(1,775)	1,016	[1]
Net cash provided by (used in) operating activities	166,863	(120,708)	[1]
Cash flows from investing activities:
Decrease in restricted cash and cash equivalents	17,797	43,944	[1]
Purchase of property, plant and equipment	(12,042)	(32,782)	[1]
Cash paid for solar power systems, leased and to be leased	(41,688)	(15,921)	[1]
Proceeds from sale of equipment to third-party	11	416	[1]
Cash received for sale of investment in unconsolidated investees	0	17,403	[1]
Net cash provided by (used in) investing activities	(35,922)	13,060	[1]
Cash flows from financing activities:
Proceeds from issuance of project loans, net of issuance costs	24,061	0	[1]
Proceeds from residential lease financing	39,090	0	[1]
Proceeds from sale-leaseback financing	33,850	0	[1]
Contributions from noncontrolling interest	12,315	0	[1]
Repayment of bank loans, project loans and other debt	(180,501)	(100,592)	[1]
Cash paid for repurchase of convertible debt	0	198,608	[1]
Proceeds from private offering of common stock, net of issuance costs	0	163,681	[1]
Cash distributions to Parent in connection with the transfer of entities under common control	0	(178,290)	[1]
Proceeds from exercise of stock options	25	8	[1]
Purchases of stock for tax withholding obligations on vested restricted stock	(10,739)	(3,885)	[1]
Net cash used in financing activities	(81,899)	(317,686)	[1]
Effect of exchange rate changes on cash and cash equivalents	(942)	1,853	[1]
Net increase (decrease) in cash and cash equivalents	48,100	(423,481)	[1]
Cash and Cash Equivalents at beginning of period	457,487	725,618	[1]
Cash and cash equivalents, end of period	505,587	302,137	[1]
Non-cash transactions:
Assignment of residential lease receivables to a third party financial institution	33,969	0
Property, plant and equipment acquisitions funded by liabilities	5,042	6,419
Costs of solar power systems, leased and to be leased, sourced from existing inventory	15,536	12,362
Costs of solar power systems, leased and to be leased, funded by liabilities	4,070	2,150
Costs of solar power systems under sale-leaseback financing arrangements, sourced by project assets	20,066	0
Non-cash interest expense capitalized and added to the cost of qualified assets	159	364
Issuance of warrants in connection with the Liquidity Support Agreement	$ 0	$ 50,327

[1] As adjusted to conform to the current period presentation for solar power systems leased and to be leased (see Note 1)

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Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2013	Dec. 30, 2012
Preferred Stock, Par Value Per Share	$ 0.001	$ 0.001
Preferred Stock, Shares Authorized	10,000,000	10,000,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Common Stock, Par or Stated Value Per Share	$ 0.001	$ 0.001
Common Stock, Shares Authorized	367,500,000	367,500,000
Common Stock, Shares, Issued	125,804,792	123,315,990
Common Stock, Shares, Outstanding	120,812,930	119,234,280
Treasury Stock, Shares	4,991,862	4,081,710

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Foreign Currency Derivatives

3 Months Ended

Mar. 31, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Foreign Currency Derivatives [Text Block]

FOREIGN CURRENCY DERIVATIVES

The Company has non-U.S. subsidiaries that operate and sell the Company's products in various global markets, primarily in Europe. As a result, the Company is exposed to risks associated with changes in foreign currency exchange rates. It is the Company's policy to use various techniques, including entering into foreign currency derivative instruments, to manage the exposures associated with forecasted revenues, purchases of foreign sourced equipment and non-U.S. dollar denominated monetary assets and liabilities. The Company does not enter into foreign currency derivative financial instruments for speculative or trading purposes.

The Company is required to recognize derivative instruments as either assets or liabilities at fair value in its Balance Sheets. It is the Company's policy to present all derivative fair value amounts gross on its Condensed Consolidated Balance Sheets regardless of legal right of offset. The Company utilizes the income approach and mid-market pricing to calculate the fair value of its option and forward contracts based on market volatilities, spot and forward rates, interest rates, and credit default swaps rates from published sources. The following table presents information about the Company's hedge instruments measured at fair value on a recurring basis as of March 31, 2013 and December 30, 2012, all of which utilize Level 2 inputs under the fair value hierarchy:

(In thousands)	Balance Sheet Classification	March 31, 2013		December 30, 2012
Assets	Prepaid expenses and other current assets
Derivatives designated as hedging instruments:
Foreign currency option contracts		$	2,580	$	519
Foreign currency forward exchange contracts		298		—
		$	2,878	$	519
Derivatives not designated as hedging instruments:
Foreign currency option contracts		$	618	$	25
Foreign currency forward exchange contracts		4,156		731
		$	4,774	$	756
Liabilities	Accrued liabilities
Derivatives designated as hedging instruments:
Foreign currency option contracts		$	10	$	387
Foreign currency forward exchange contracts		4		23
		$	14	$	410
Derivatives not designated as hedging instruments:
Foreign currency option contracts		$	618	$	26
Foreign currency forward exchange contracts		5,714		4,455
		$	6,332	$	4,481

Valuations are based on quoted prices in markets that are not active or for which all significant inputs are observable, directly or indirectly. The selection of a particular technique to value an over-the-counter ("OTC") foreign currency derivative depends upon the contractual term of, and specific risks inherent with, the instrument as well as the availability of pricing information in the market. The Company generally uses similar techniques to value similar instruments. Valuation techniques utilize a variety of inputs, including contractual terms, market prices, yield curves, credit curves and measures of volatility. For OTC foreign currency derivatives that trade in liquid markets, such as generic forward and option contracts, inputs can generally be verified and selections do not involve significant management judgment.

The following table summarizes the pre-tax amount of unrealized gain or loss recognized in "Accumulated other comprehensive income" ("OCI") in "Stockholders' equity" in the Condensed Consolidated Balance Sheets:

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012
Derivatives designated as cash flow hedges:
Gain (loss) in Accumulated OCI at the beginning of the period	$	(243	)	$	10,473
Unrealized gain (loss) recognized in OCI (effective portion)	2,448			(2,425		)
Less: Loss (gain) reclassified from Accumulated OCI to revenue (effective portion)	387			(3,325		)
Net gain (loss) on derivatives	$	2,835		$	(5,750	)
Gain in Accumulated OCI at the end of the period	$	2,592		$	4,723

The following table summarizes the amount of gain or loss recognized in "Other, net" in the Condensed Consolidated Statements of Operations in the three months ended March 31, 2013 and April 1, 2012:

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012
Derivatives designated as cash flow hedges:
Loss recognized in "Other, net" on derivatives (ineffective portion and amount excluded from effectiveness testing)	$	(789	)	$	(365	)
Derivatives not designated as hedging instruments:
Gain (loss) recognized in "Other, net"	$	166		$	(1,290	)

Foreign Currency Exchange Risk

Designated Derivatives Hedging Cash Flow Exposure

The Company's subsidiaries have had and will continue to have material cash flows, including revenues and expenses, which are denominated in currencies other than their functional currencies. The Company's cash flow exposure primarily relates to anticipated third party foreign currency revenues and expenses. Changes in exchange rates between the Company's subsidiaries' functional currencies and other currencies in which it transacts will cause fluctuations in margin, cash flow expectations, and cash flows realized or settled. Accordingly, the Company enters into derivative contracts to hedge the value of a portion of these forecasted cash flows and to protect financial performance.

As of March 31, 2013, the Company had designated outstanding cash flow hedge option contracts and forward contracts with an aggregate notional value of $53.6 million and $25.9 million, respectively. The maturity dates of the outstanding contracts as of March 31, 2013 range from April 2013 to September 2013. As of December 30, 2012, the Company had designated outstanding hedge option contracts and forward contracts with an aggregate notional value of $71.0 million and $26.4 million, respectively. The Company designates either gross external or intercompany revenue up to its net economic exposure. These derivatives have a maturity of one year or less and consist of foreign currency option and forward contracts. The effective portion of these cash flow hedges are reclassified into revenue when third party revenue is recognized in the Condensed Consolidated Statements of Operations.

The Company expects to reclassify the majority of its net gains or losses related to these option and forward contracts that are included in accumulated other comprehensive gain as of March 31, 2013 to revenue in the next 12 months. The Company uses the spot to spot method to measure the effectiveness of its cash flow hedges. Under this method for each reporting period, the change in fair value of the forward contracts attributable to the changes in spot exchange rates (the effective portion) is reported in accumulated other comprehensive income (loss) on its consolidated balance sheet and the remaining change in fair value of the forward contract (the excluded and the ineffective portions, if any) is recognized in other income (expense), net, in its Condensed Consolidated Statement of Operations. The premium paid or time value of an option on the date of purchase is recorded as an asset in the Condensed Consolidated Balance Sheets. Thereafter, any change in value related to time value is included in "Other, net" in the Condensed Consolidated Statements of Operations. The Company additionally had offsetting non-designated option contracts with an aggregate notional value of $12.8 million and zero as of March 31, 2013 and December 30, 2012, respectively.

Under cash flow hedge accounting rules for foreign currency derivatives, the Company reflects the effective gains and losses on its hedged transactions in accumulated other comprehensive income (loss) rather than current earnings until the hedged transactions occur. However, if the Company determines that the anticipated hedged transactions are probable not to occur, it must immediately reclassify any cumulative market gains and losses into its Condensed Consolidated Statement of Operations. During the three months ended March 31, 2013, the Company determined that all its anticipated hedged transactions were probable to occur.

Non-Designated Derivatives Hedging Transaction Exposure

Other derivatives not designated as hedging instruments consist of forward contracts used to hedge re-measurement of foreign currency denominated monetary assets and liabilities primarily for intercompany transactions, receivables from customers, and payables to third parties. Changes in exchange rates between the Company's subsidiaries' functional currencies and the currencies in which these assets and liabilities are denominated can create fluctuations in the Company's reported consolidated financial position, results of operations and cash flows. The Company enters into forward contracts, which are originally designated as cash flow hedges, and de-designates them upon recognition of the anticipated transaction to protect resulting non-functional currency monetary assets. These forward contracts as well as additional forward contracts are entered into to hedge foreign currency denominated monetary assets and liabilities against the short-term effects of currency exchange rate fluctuations. The Company records its derivative contracts that are not designated as hedging instruments at fair value with the related gains or losses recorded in "Other, net" in the Condensed Consolidated Statements of Operations. The gains or losses on these contracts are substantially offset by transaction gains or losses on the underlying balances being hedged. As of March 31, 2013 and December 30, 2012, the Company held forward contracts with an aggregate notional value of $49.7 million and $121.8 million, respectively, to hedge balance sheet exposure. The maturity dates of these contracts range from April 2013 to November 2013.

Credit Risk

The Company's option and forward contracts do not contain any credit-risk-related contingent features. The Company is exposed to credit losses in the event of nonperformance by the counterparties of its option and forward contracts. The Company enters into derivative contracts with high-quality financial institutions and limits the amount of credit exposure to any single counterparty. In addition, the derivative contracts are limited to a time period of less than one year and the Company continuously evaluates the credit standing of its counterparties.

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Document and Entity Information (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	May 03, 2013	Jul. 01, 2012
Entity Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2013
Entity Registrant Name	SUNPOWER CORP
Entity Central Index Key	0000867773
Current Fiscal Year End Date	--03-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Public Float			$ 191.5
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q1
Entity Common Stock, Shares Outstanding		120,831,758

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Income Taxes

3 Months Ended

Mar. 31, 2013

Income Tax Disclosure [Abstract]

Income Taxes [Text Block]

INCOME TAXES

In the three months ended March 31, 2013, the Company's income tax provision of $3.0 million on a loss before income taxes and equity in losses of unconsolidated investees of $58.6 million was primarily due to projected tax expense in profitable foreign jurisdictions as well as minimum taxes. In the three months ended April 1, 2012, the Company's income tax provision was $1.4 million on a loss before income taxes and equity in losses of unconsolidated investees of $69.7 million was primarily due to projected tax expense in profitable foreign jurisdictions.

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Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012
Revenue	$ 635,433	$ 494,131
Cost of revenue	576,120	448,883
Gross margin	59,313	45,248
Operating expenses:
Research and development	13,170	16,726
Sales, general and administrative	70,092	76,194
Restructuring charges	(337)	3,046
Total operating expenses	82,925	95,966
Operating income (loss)	(23,612)	(50,718)
Other income (expense), net:
Interest income	255	342
Interest expense	(27,034)	(18,701)
Other, net	(8,256)	(672)
Other income (expense), net	(35,035)	(19,031)
Income (loss) before income taxes and equity in earnings (loss) of unconsolidated investees	(58,647)	(69,749)
Provision for income taxes	(2,989)	(1,356)
Equity in earnings (loss) of unconsolidated investees	333	3,425	[1]
Net Loss	(61,969)	(74,530)	[1]
Net loss attributable to noncontrolling interest	7,273	0
Net loss attributable to stockholders	$ (54,696)	$ (74,530)
Net income (loss) per share of common stock:
Basic and diluted	$ (0.46)	$ (0.67)
Weighted Average Number of Shares:
Basic and diluted	119,553	111,785

[1] As adjusted to conform to the current period presentation for solar power systems leased and to be leased (see Note 1)

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Fair Value Measurements

3 Months Ended

Mar. 31, 2013

Fair Value Disclosures [Abstract]

Fair Value Measurements [Text Block]

FAIR VALUE MEASUREMENTS

Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement (observable inputs are the preferred basis of valuation):

• Level 1 — Quoted prices in active markets for identical assets or liabilities.

• Level 2 — Measurements are inputs that are observable for assets or liabilities, either directly or indirectly, other than quoted prices included within Level 1.

• Level 3 — Prices or valuations that require management inputs that are both significant to the fair value measurement and unobservable.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The Company measures certain assets and liabilities at fair value on a recurring basis. There were no transfers between fair value measurement levels during the three months ended March 31, 2013 or April 1, 2012. The Company did not have any assets or liabilities measured at fair value on a recurring basis requiring Level 3 inputs as of March 31, 2013 or December 30, 2012.

The following table summarizes the Company's assets and liabilities measured and recorded at fair value on a recurring basis as of March 31, 2013 and December 30, 2012, respectively:

	March 31, 2013						December 30, 2012
(In thousands)	Total		Level 1		Level 2		Total		Level 1		Level 2
Assets
Cash and cash equivalents:
Money market funds (1)	$	97,000	$	97,000	$	—	$	117,254	$	117,254	$	—
Prepaid expenses and other current assets:
Foreign currency derivatives (Note 10)	7,652		—		7,652		1,275		—		1,275
Other long-term assets:
Debt derivatives (Note 9)	13,946		—		13,946		2,327		—		2,327
Total assets	$	118,598	$	97,000	$	21,598	$	120,856	$	117,254	$	3,602
Liabilities
Accrued liabilities:
Foreign currency derivatives (Note 10)	$	6,346	$	—	$	6,346	$	4,891	$	—	$	4,891
Other long-term liabilities:
Debt derivatives (Note 9)	13,946		—		13,946		2,327		—		2,327
Total liabilities	$	20,292	$	—	$	20,292	$	7,218	$	—	$	7,218

(1) The Company's cash equivalents consist of money market fund instruments which are classified as available-for-sale and within Level 1 of the fair value hierarchy because they are valued using quoted market prices for identical instruments in active markets.

Other financial instruments, including the Company's accounts receivable, accounts payable and accrued liabilities, are carried at cost, which generally approximates fair value due to the short-term nature of these instruments.

Debt Derivatives

The 4.50% Bond Hedge (as defined in Note 9) and the embedded cash conversion option within the 4.50% debentures (as defined in Note 9) are classified as derivative instruments that require mark-to-market treatment with changes in fair value reported in the Company's Condensed Consolidated Statements of Operations. The fair values of these derivative instruments were determined utilizing the following Level 1 and Level 2 inputs:

	As of (1)
	March 31, 2013			December 30, 2012
Stock price	$	11.54		$	5.49
Exercise price	$	22.53		$	22.53
Interest rate	0.41		%	0.40		%
Stock volatility	55.6		%	59.9		%
Credit risk adjustment	1.13		%	1.07		%
Maturity date	February 18, 2015			February 18, 2015

(1) The valuation model utilizes these inputs to value the right but not the obligation to purchase one share at $22.53. The Company utilized a Black-Scholes valuation model to value the 4.50% Bond Hedge and embedded cash conversion option. The underlying input assumptions were determined as follows:

(i) Stock price. The closing price of the Company's common stock on the last trading day of the quarter.

(ii) Exercise price. The exercise price of the 4.50% Bond Hedge and the embedded cash conversion option.

(iii) Interest rate. The Treasury Strip rate associated with the life of the 4.50% Bond Hedge and the embedded cash conversion option.

(iv) Stock volatility. The volatility of the Company's common stock over the life of the 4.50% Bond Hedge and the embedded cash conversion option.

(v) Credit risk adjustment. Represents the weighted average of the credit default swap rate of the counterparties.

Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis

The Company measures certain investments and non-financial assets (including project assets, property, plant and equipment, and other intangible assets) at fair value on a non-recurring basis in periods after initial measurement in circumstances when the fair value of such asset is impaired below its recorded cost. Information regarding the Company's other intangible asset balances are disclosed in Note 3.

Debt Securities

The Company's debt securities consist of Philippine government bonds, classified as held-to-maturity, which are maintained as collateral for present and future business transactions within the country. These bonds have maturity dates of up to 5 years with a carrying value of $10.9 million as of both March 31, 2013 and December 30, 2012 which are classified as "Restricted long-term marketable securities" on the Company's Condensed Consolidated Balance Sheets. The Company records such held-to-maturity investments at amortized cost based on its ability and intent to hold the securities until maturity. The Company monitors for changes in circumstances and events that would impact its ability and intent to hold such securities until the recorded amortized costs are recovered. The Company incurred no other-than-temporary impairment loss in the three months ended March 31, 2013 and December 30, 2012. The debt securities were categorized in Level 2 of the fair value hierarchy.

Equity and Cost Method Investments

The Company's equity and cost method investments in non-consolidated entities are comprised of convertible promissory notes, common and preferred stock. The Company monitors these investments, which are included in "Other long-term assets" in its Condensed Consolidated Balance Sheets, for impairment and records reductions in the carrying values when necessary. Circumstances that indicate an other-than-temporary decline include Level 2 and Level 3 measurements such as the valuation ascribed to the issuing company in subsequent financing rounds, decreases in quoted market prices, and declines in operations of the issuer. As of March 31, 2013 and December 30, 2012, the Company had $111.2 million and $111.5 million, respectively, in investments accounted for under the equity method and $10.2 million and $14.9 million, respectively, in investments accounted for under the cost method (see Note 8).

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Balance Sheet Components

3 Months Ended

Mar. 31, 2013

Balance Sheet Related Disclosures [Abstract]

Balance Sheet Components [Text Block]

BALANCE SHEET COMPONENTS

	As of
(In thousands)	March 31, 2013			December 30, 2012
Accounts receivable, net:
Accounts receivable, gross (1)	$	338,147		$	429,977
Less: allowance for doubtful accounts	(31,009		)	(26,773		)
Less: allowance for sales returns	(4,129		)	(5,054		)
	$	303,009		$	398,150

(1) Includes short-term finance receivables associated with solar power systems leased of $4.5 million as of both March 31, 2013 and December 30, 2012, respectively.

Inventories:
Raw materials	$	88,179	$	89,331
Work-in-process	55,668		50,627
Finished goods	137,520		151,428
	$	281,367	$	291,386

	As of
(In thousands)	March 31, 2013		December 30, 2012
Prepaid expenses and other current assets:
VAT receivables, current portion	$	102,592	$	97,041
Foreign currency derivatives	7,652		1,275
Deferred project costs	135,695		305,980
Deferred costs for solar power systems to be leased	24,148		31,419
Other receivables (2)	63,795		104,640
Other prepaid expenses	40,076		25,230
Other current assets	58,379		47,468
	$	432,337	$	613,053

(2) Includes tolling agreements with suppliers in which the Company provides polysilicon required for silicon ingot manufacturing and procures the manufactured silicon ingots from the suppliers (see Notes 7 and 8).

Project assets - plants and land:
Project assets — plants	$	80,645	$	61,862
Project assets — land	18,148		21,645
	$	98,793	$	83,507
Project assets - plants and land, current portion	$	90,429	$	75,911
Project assets - plants and land, net of current portion	$	8,364	$	7,596

Property, plant and equipment, net:
Land and buildings	$	20,109		$	20,109
Leasehold improvements	226,987			221,378
Manufacturing equipment (3)	545,970			531,289
Computer equipment	75,557			75,438
Furniture and fixtures	8,274			8,178
Solar power systems (4)	34,621			12,501
Solar power systems leased	212,572			163,003
Solar power systems to be leased	65,290			89,423
Construction-in-process	17,719			34,110
	1,207,099			1,155,429
Less: accumulated depreciation (5)	(400,956		)	(380,520		)
	$	806,143		$	774,909

(3) The Company's mortgage loan agreement with International Finance Corporation ("IFC") is collateralized by certain manufacturing equipment with a net book value of $168.1 million and $152.9 million as of March 31, 2013 and December 30, 2012, respectively. The Company also provided security for advance payments received from a third party in the form of collateralized manufacturing equipment with a net book value of $19.1 million and $16.5 million as of March 31, 2013 and December 30, 2012, respectively.

(4) Includes $20.1 million of solar power systems associated with sale-leaseback transactions under the financing method (see Note 7).

(5) Total depreciation expense was $23.6 million and $29.1 million for the three months ended March 31, 2013 and April 1, 2012, respectively.

	As of
(In thousands)	March 31, 2013		December 30, 2012
Property, plant and equipment, net by geography (6):
Philippines	$	359,171	$	367,708
United States	385,687		343,710
Mexico	32,158		32,409
Europe	28,411		29,292
Other	716		1,790
	$	806,143	$	774,909

(6) Property, plant and equipment, net are based on the physical location of the assets.

The below table presents the cash and non-cash interest expense capitalized to property, plant and equipment and project assets during the three months ended March 31, 2013 and April 1, 2012, respectively.

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012
Interest expense:
Interest cost incurred	$	(27,544	)	$	(19,631	)
Cash interest cost capitalized - property, plant and equipment	228			288
Non-cash interest cost capitalized - property, plant and equipment	57			133
Cash interest cost capitalized - project assets - plant and land	123			278
Non-cash interest cost capitalized - project assets - plant and land	102			231
Interest expense	$	(27,034	)	$	(18,701	)

	As of
(In thousands)	March 31, 2013		December 30, 2012
Other long-term assets:
Equity method investments	$	111,184	$	111,516
Bond hedge derivative	13,946		2,327
Cost method investments	10,240		14,918
Long-term financing receivables	93,540		67,742
Long-term debt issuance costs	29,870		38,185
Other	43,109		41,375
	$	301,889	$	276,063

	As of
(In thousands)	March 31, 2013		December 30, 2012
Accrued liabilities:
VAT payables	$	6,447	$	2,049
Foreign currency derivatives	6,346		4,891
Short-term warranty reserves	9,254		9,054
Interest payable	8,926		9,672
Deferred revenue	37,197		32,507
Employee compensation and employee benefits	42,491		40,750
Restructuring reserve	21,723		29,477
Short-term residential lease financing	26,581		25,153
Short-term sale-leaseback financing (Note 7)	6,423		—
Other	116,299		93,819
	$	281,687	$	247,372

Other long-term liabilities:
Embedded conversion option derivatives	$	13,946	$	2,327
Long-term warranty reserves	110,295		107,803
Deferred revenue	147,665		128,936
Unrecognized tax benefits	35,551		35,022
Long-term residential lease financing	17,364		11,411
Long-term sale-leaseback financing (Note 7)	27,427		—
Other	59,109		50,120
	$	411,357	$	335,619

Accumulated other comprehensive loss:
Cumulative translation adjustment	$	(3,662	)	$	(2,319	)
Net unrealized gain on derivatives	2,592			(243		)
Deferred taxes	(492		)	41
	$	(1,562	)	$	(2,521	)

Solar Power Systems Leased and to be Leased

The Company leases solar systems to residential customers under both operating and sales-type leases. As of March 31, 2013 and December 30, 2012, solar power systems leased out under operating leases, presented in "Property, plant and equipment, net" in the Company's Condensed Consolidated Balance Sheets was $212.6 million and $163.0 million, respectively, and solar power systems to be leased under operating leases, presented in "Property, plant and equipment, net" in the Company's Condensed Consolidated Balance Sheets was $65.3 million and $89.4 million, respectively. As of March 31, 2013, financing receivables for sales-type leases, presented in "Accounts receivable, net" and "Other long-term assets" in the Company's Condensed Consolidated Balance Sheets was $4.5 million and $93.5 million, respectively. As of December 30, 2012, financing receivables for sales-type leases, presented in "Accounts receivable, net" and "Other long-term assets" in the Company's Condensed Consolidated Balance Sheets was $4.5 million and $67.7 million, respectively. Amounts recognized in the Company's Condensed Consolidated Statement of Operations are not significant in any period presented.

The Company has entered into multiple facilities under which solar power systems are financed with third-party investors. Under the terms of certain programs the investors make upfront payments to the Company, which the Company recognizes as a non-recourse liability that will be reduced over the specified term of the program as customer receivables and government incentives are received by the third party investors. As the non-recourse liability is reduced over time, the Company makes a corresponding reduction in customer and government incentive receivables on its balance sheet. Under this approach, for both operating and sales-type leases the Company continues to account for these arrangements with its residential lease customers in the condensed consolidated financial statements.

As of March 31, 2013 and December 30, 2012, the remaining liability to the third-party investors, presented in Accrued liabilities and Other long-term liabilities on the Company's Condensed Consolidated Balance Sheets, was $43.9 million and $36.6 million, respectively. As of March 31, 2013 and December 30, 2012, the Company has pledged solar assets with an aggregate book value of $327.1 million and $280.8 million, respectively, to the third-party investors as security for its obligations under the contractual arrangements.

In the first quarter of fiscal 2013, the Company entered into a facility with a third-party investor under which both parties will invest in an entity which holds SunPower solar power systems and leases with residential customers. The Company was determined to hold a controlling interest in the less than wholly owned entity and has fully consolidated this entity as a result. The Company accounts for the portion of net assets in this consolidated entity attributable to the investor as Noncontrolling interest in its condensed consolidated financial statements (see Note 1).

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The Company and Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Principles of Consolidation [Policy Text Block]

Principles of Consolidation

The condensed consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States of America ("United States" or "U.S.") and include the accounts of the Company, all of its subsidiaries and special purpose entities, as appropriate under consolidation accounting guidelines. Intercompany transactions and balances have been eliminated in consolidation. The assets of the special purpose entities that the Company sets up related to project financing for customers are not designed to be available to service the general liabilities and obligations of the Company in certain circumstances.

Comparability of Prior Year Financial Data, Policy [Policy Text Block]

Reclassifications

Certain prior period balances have been reclassified to conform to the current period presentation in the Company's condensed consolidated financial statements and the accompanying notes. Such reclassifications had no effect on previously reported results of operations or retained earnings. As reflected in the Company's Annual Report on Form 10-K for the fiscal year ended December 30, 2012 ("2012 Form 10-K"), in connection with the growth of its residential lease program, during the fourth quarter of fiscal 2012 the Company began to separately classify both the cost of the leased assets and related investing cash flows based upon the nature of the lease entered into. The Company has reclassified prior period interim balances to conform to the current period presentation, which resulted in an increase in operating cash flows of $15.9 million for the three months ended April 1, 2012.

Fiscal Years [Policy Text Block]

Fiscal Years

The Company has a 52-to-53-week fiscal year that ends on the Sunday closest to December 31. Accordingly, every fifth or sixth year will be a 53-week fiscal year. Both fiscal 2013 and 2012 are 52-week fiscal years. The first quarter of fiscal 2013 ended on March 31, 2013, while the first quarter of fiscal 2012 ended on April 1, 2012. Both the first quarter of fiscal 2013 and fiscal 2012 were 13-week quarters.

Management Estimates [Policy Text Block]

Management Estimates

The preparation of the condensed consolidated financial statements in conformity with U.S. generally accepted accounting principles ("U.S. GAAP") requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Significant estimates in these condensed consolidated financial statements include percentage-of-completion for construction projects; allowances for doubtful accounts receivable and sales returns; inventory and project asset write-downs; stock-based compensation; estimates for future cash flows and economic useful lives of property, plant and equipment and other long-term assets; fair value of financial instruments; valuation of certain accrued liabilities including accrued warranty, restructuring, and termination of supply contracts reserves; valuation of debt without the conversion feature; and income taxes and tax valuation allowances. Actual results could materially differ from those estimates.

Consolidation, Subsidiaries or Other Investments, Consolidated Entities, Policy [Policy Text Block]

Noncontrolling Interest

Noncontrolling interest represents the portion of net assets in a consolidated subsidiary that are not attributable, directly or indirectly, to the Company. In the first quarter of fiscal 2013, the Company entered into a facility with a third-party investor under which the investor was determined to hold a noncontrolling interest in an entity fully consolidated by the Company. The net assets of the shared entity are attributed to the controlling and noncontrolling interests based on the terms of the governing contractual arrangements. The Company further determined the hypothetical liquidation at book value method ("HLBV Method") to be the appropriate method for attributing net assets to the controlling and noncontrolling interests as this method most closely mirrors the economics of the governing contractual arrangements. Under the HLBV Method, the Company allocates recorded income (loss) to each investor based on the change, during the reporting period, of the amount of net assets each investor is entitled to under the governing contractual arrangements in a liquidation scenario.

Fair Value of Financial Instruments, Policy [Policy Text Block]

Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement (observable inputs are the preferred basis of valuation):

• Level 1 — Quoted prices in active markets for identical assets or liabilities.

• Level 2 — Measurements are inputs that are observable for assets or liabilities, either directly or indirectly, other than quoted prices included within Level 1.

• Level 3 — Prices or valuations that require management inputs that are both significant to the fair value measurement and unobservable.

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Net Loss Per Share of Common Stock

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Earnings Per Share [Text Block]

NET LOSS PER SHARE OF COMMON STOCK

The Company calculates net income (loss) per share by dividing earnings allocated to common stockholders by the weighted average number of common shares outstanding for the period.

Diluted weighted average shares is computed using basic weighted average shares plus any potentially dilutive securities outstanding during the period using the if-converted method and treasury-stock-type method, except when their effect is anti-dilutive. Potentially dilutive securities include stock options, restricted stock units, senior convertible debentures, amended warrants associated with the CSO2015, and the Upfront Warrants held by Total. As a result of the net loss from continuing operations for the three months ended March 31, 2013 and December 30, 2012 there is no dilutive impact to the net loss per share calculation for the period.

The following table presents the calculation of basic and diluted net loss per share:

	Three Months Ended
(In thousands, except per share amounts)	March 31, 2013			April 1, 2012
Basic and Diluted net loss per share:
Numerator:  Net loss available to common stockholders	$	(54,696	)	$	(74,530	)
Denominator: Basic and diluted weighted-average common shares	119,553			111,785
Basic and diluted net loss per share	$	(0.46	)	$	(0.67	)

Holders of the Company's 4.75% debentures may convert the debentures into shares of the Company's common stock, at the applicable conversion rate, at any time on or prior to maturity. The 4.75% debentures are included in the calculation of diluted net income per share if their inclusion is dilutive under the if-converted method. During both the three months ended March 31, 2013 and December 30, 2012, there were zero dilutive potential common shares under the 4.75% debentures.

Holders of the Company's 0.75% debentures may, under certain circumstances at their option, convert the debentures into cash and, if applicable, shares of the Company's common stock at the applicable conversion rate, at any time on or prior to maturity. The 0.75% debentures are included in the calculation of diluted net income per share if their inclusion is dilutive under the treasury-stock-type method. The Company's average stock price during the three months ended March 31, 2013 and December 30, 2012 did not exceed the conversion price for the 0.75% debentures. Under the treasury-stock-type method, the Company's 0.75% debentures will generally have a dilutive impact on net income per share if the Company's average stock price for the period exceeds the conversion price for the debentures.

Holders of the Company's 4.50% debentures may, under certain circumstances at their option, convert the debentures into cash, and not into shares of the Company's common stock (or any other securities). Therefore, the 4.50% debentures are excluded from the net income per share calculation.

Holders of the amended and restated Warrants under the CSO2015, upon exercise of the 4.50% Warrants, may acquire up to 11.1 million shares of the Company's common stock at an exercise price of $24.00 (see Note 9). If the market price per share of the Company's common stock for the period exceeds the established strike price, the 4.50% Warrants will have a dilutive effect on its diluted net income per share using the treasury-stock-type method.

The Upfront Warrants, issued on February 28, 2012, allow Total to acquire up to 9,531,677 shares of the Company's common stock at an exercise price of $7.8685. If the market price per share of the Company's common stock for the period exceeds the established strike price, the Upfront Warrants will have a dilutive effect on its diluted net income per share using the treasury-stock-type method.

The following is a summary of outstanding anti-dilutive potential common stock which was excluded from income per diluted share in the following periods:

	As of
(In thousands)	March 31, 2013 (1)	April 1, 2012 (1)
Stock options	313	410
Restricted stock units	5,687	4,413
Warrants (under the CSO2015)	*	*
Upfront Warrants (held by Total)	9,532	**
4.75% debentures	8,712	8,712
0.75% debentures	*	*

(1) As a result of the net loss per share for the three months ended March 31, 2013 and April 1, 2012, the inclusion of all potentially dilutive stock options, restricted stock units, and common shares under the 4.75% debentures would be anti-dilutive. Therefore, those stock options, restricted stock units and shares were excluded from the computation of the weighted-average shares for diluted net loss per share for such period.

* The Company's average stock price during the three months ended March 31, 2013 and April 1, 2012 did not exceed the conversion price for the amended warrants (under the CSO2015) and 0.75% debentures and those instruments were thus non-dilutive in such periods.

** The Upfront Warrants were issued in the first quarter of fiscal 2012. The Company's stock price as of the last business day of the first quarter of fiscal 2012 did not exceed the exercise price of the Upfront Warrants.

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Equity Method Investments

3 Months Ended

Mar. 31, 2013

Equity Method Investments and Joint Ventures [Abstract]

Equity Method Investments [Text Block]

EQUITY METHOD INVESTMENTS

The Company accounts for its equity interests in its unconsolidated investees described below under the equity method of accounting as it has the ability to exercise significant influence, but does not own a majority equity interest in, or otherwise control, the investees. As of March 31, 2013 and December 30, 2012, the Company's carrying value of its equity method investments totaled $111.2 million and $111.5 million, respectively, and is classified as “Other long-term assets” in its Condensed Consolidated Balance Sheets. The Company's share of its earnings (loss) from equity method investments is reflected as "Equity in loss of unconsolidated investees" in its Condensed Consolidated Statement of Operations.

Related Party Transactions with Equity Method Investees:

	As of
(In thousands)	March 31, 2013		December 30, 2012
Accounts receivable	$	6,958	$	17,847
Accounts payable	37,841		63,469
Other long-term assets:
Long-term note receivable	1,040		1,040

	Three Months Ended
(In thousands)	March 31, 2013		April 1, 2012
Payments made to equity method investees for products/services	$	118,943	$	179,988

Equity Investment in Huaxia CPV (Inner Mongolia) Power Co., Ltd. ("CCPV")

In December 2012, the Company entered into an agreement with Tianjin Zhonghuan Semiconductor Co. Ltd. ("TZS"), Inner Mongolia Power Group Co. Ltd. ("IMP") and Hohhot Jinqiao City Development Company Co., Ltd. ("HJCD") to form CCPV, a jointly owned entity to manufacture and deploy the Company's C-7 Tracker concentrator technology in Inner Mongolia and other regions in China. Huaxia CPV will be based in Hohhot, Inner Mongolia. Under the terms of the agreement, the Company will invest RMB 100,000,000 (or approximately $16.0 million based on the exchange rate as of March 31, 2013), for a 25% equity ownership in CCPV, with the investment to be made over a period of two years subsequent to the establishment of the entity. The establishment of the entity is subject to approval of the Chinese government. No contributions have been made to date.

Equity Investment in Diamond Energy Pty Ltd. ("Diamond Energy")

In October 2012, the Company made a $3.0 million equity investment in Diamond Energy, an alternative energy project developer and clean electricity retailer headquartered in Melbourne, Australia, in exchange for a 25% equity ownership. The Company additionally provided Diamond Energy $1.0 million under a five year convertible note agreement. The Company will lend an additional $1.0 million under the convertible note agreement during fiscal 2013 and will receive interest of 1% per annum on the amounts lent to Diamond Energy, to be paid upon conversion or maturity.

The Company has concluded that it is not the primary beneficiary of Diamond Energy since, although the Company is obligated to absorb losses and has the right to receive benefits, the Company alone does not have the power to direct the activities of Diamond that most significantly impact its economic performance. The Company accounts for its investment in Diamond using the equity method since the Company is able to exercise significant influence over Diamond due to its board position.

Equity Investment and Joint Venture with AUOSP

In fiscal 2010, the Company, AUO and AU Optronics Corporation, the ultimate parent company of AUO ("AUO Taiwan") formed the joint venture AUOSP. The Company and AUO each own 50% of the joint venture AUOSP. AUOSP owns a solar cell manufacturing facility ("FAB 3") in Malaysia and manufactures solar cells and sells them on a "cost-plus" basis to the Company and AUO.

In connection with the joint venture agreement, the Company and AUO also entered into licensing and joint development, supply, and other ancillary transaction agreements. Through the licensing agreement, the Company and AUO licensed to AUOSP, on a non-exclusive, royalty-free basis, certain background intellectual property related to solar cell manufacturing (in the case of the Company), and manufacturing processes (in the case of AUO). Under the seven-year supply agreement with AUOSP, renewable by the Company for one-year periods thereafter, the Company is committed to purchase 80% of AUOSP's total annual output allocated on a monthly basis to the Company, in fiscal year 2013 and thereafter. The Company and AUO have the right to reallocate supplies from time to time under a written agreement. As required under the joint venture agreement, in fiscal 2010, the Company and AUOSP entered into an agreement under which the Company will resell to AUOSP polysilicon purchased from a third-party supplier and AUOSP will provide prepayments to the Company related to such polysilicon, which prepayment will then be made by the Company to the third-party supplier.

The Company and AUO are not permitted to transfer any of AUOSP's shares held by them, except to each other and to their direct or indirect wholly-owned subsidiaries. In the joint venture agreement, the Company and AUO agreed to each contribute additional amounts through 2014 amounting to $241.0 million, or such lesser amount as the parties may mutually agree. In addition, if AUOSP, the Company or AUO requests additional equity financing to AUOSP, then the Company and AUO will each be required to make additional cash contributions of up to $50.0 million in the aggregate (See Note 7).

The Company has concluded that it is not the primary beneficiary of AUOSP since, although the Company and AUO are both obligated to absorb losses or have the right to receive benefits, the Company alone does not have the power to direct the activities of AUOSP that most significantly impact its economic performance. In making this determination the Company considered the shared power arrangement, including equal board governance for significant decisions, elective appointment, and the fact that both parties contribute to the activities that most significantly impact the joint venture's economic performance. The Company accounts for its investment in AUOSP using the equity method as a result of the shared power arrangement. As of March 31, 2013, the Company's maximum exposure to loss as a result of its involvement with AUOSP is limited to the carrying value of its investment.

Equity Investment in First Philec Solar Corporation ("First Philec Solar")

In fiscal 2007, the Company and First Philippine Electric Corporation ("First Philec") formed First Philec Solar, a jointly owned entity to provide wafer slicing services of silicon ingots to the Company in the Philippines. The Company supplied to First Philec Solar silicon ingots and technology required for slicing silicon. Once manufactured, the Company purchased the completed silicon wafers from First Philec Solar under a six-year wafering supply and sales agreement, which the Company terminated in the third quarter of fiscal 2012. There is no obligation or expectation for the Company to provide additional funding to First Philec Solar.

The Company has concluded that it is not the primary beneficiary of First Philec Solar since, although the Company and First Philec are both obligated to absorb losses or have the right to receive benefits from First Philec Solar, such variable interests held by the Company do not empower it to direct the activities that most significantly impact First Philec Solar's economic performance. In reaching this determination, the Company considered the significant control exercised by First Philec over the joint venture's Board of Directors, management and daily operations. The Company accounts for its investment in First Philec Solar using the equity method since the Company is able to exercise significant influence over First Philec Solar due to its board positions.

Equity Investment in Woongjin Energy Co., Ltd ("Woongjin Energy")

In fiscal 2006, the Company and Woongjin Holdings Co., Ltd. ("Woongjin") formed Woongjin Energy, a jointly owned entity to manufacture monocrystalline silicon ingots in Korea. The Company may supply polysilicon, services, and technical support required for silicon ingot manufacturing to Woongjin Energy. Once manufactured, the Company may purchase the silicon ingots from Woongjin Energy under a nine-year agreement through 2016. There is no obligation or expectation for the Company to provide additional funding to Woongjin Energy.

During fiscal 2010, Woongjin Energy completed its initial public offering ("IPO") and the sale of 15.9 million new shares of common stock. As a result of the IPO, the Company concluded that Woongjin Energy was no longer a variable interest entity. During fiscal 2011, the Company sold 15.5 million shares of Woongjin Energy on the open market, reducing the Company's percentage equity ownership in Woongjin Energy from 31% to 6%. During the first quarter of fiscal 2012, the Company sold its remaining shares of Woongjin Energy on the open market for total proceeds which equaled the remaining investment carrying balance. As a result, the Company's percentage equity ownership and investment carrying balance was reduced to zero.

The Company accounted for its former investment in Woongjin Energy using the equity method as the Company was able to exercise significant influence over Woongjin Energy due to its board position and its consumption of a significant portion of their output.

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Restructuring

3 Months Ended

Mar. 31, 2013

Restructuring and Related Activities [Abstract]

Restructuring [Text Block]

RESTRUCTURING

October 2012 Restructuring Plan

On October 12, 2012, the Company's Board of Directors approved a reorganization (the "October 2012 Plan") to accelerate operating cost reduction and improve overall operating efficiency. In connection with the October 2012 Plan, which is expected to be completed within the twelve months following approval, the Company expects to eliminate approximately 900 positions primarily in the Philippines, representing approximately 15% of the Company's global workforce. As a result, the Company expects to record restructuring charges totaling $33.0 million to $40.0 million, related to all segments. Such charges are composed of severance benefits, lease and related termination costs, and other associated costs, $30.2 million of which was recorded in the fourth quarter of fiscal 2012. The Company expects greater than 90% of these charges to be cash.

Legacy Restructuring Plans

During fiscal 2012 and 2011, the Company implemented approved restructuring plans, related to all segments, to align with changes in the global solar market which included the consolidation of the Company's Philippine manufacturing operations as well as actions to accelerate operating cost reduction and improve overall operating efficiency. These restructuring activities were substantially complete as of March 31, 2013, as the remaining accrual is primarily attributable to ongoing facility lease obligations. The Company expects to continue to incur restructuring costs as it revises previous estimates in connection with these plans. Revisions to estimates will primarily be due to changes in assumptions associated with lease and related termination costs.

The following table summarizes the restructuring charges recognized in the Company's Condensed Consolidated Statements of Operations:

	Three Months Ended					Cumulative To Date
	March 31, 2013			April 1, 2012
October 2012 Plan:
Severance and benefits	$	(1,083	)	$	—	$	27,970
Lease and related termination costs	70			—		784
Other costs	435			—		895
	(578		)	—		29,649
Legacy Restructuring Plans:
Non-cash impairment charges	—			—		60,153
Severance and benefits	—			944		19,836
Lease and related termination costs	217			1,770		4,423
Other costs	24			332		7,828
	241			3,046		92,240
Total restructuring charges	$	(337	)	$	3,046	$	121,889

The following table summarizes the restructuring reserve activity during the three months ended March 31, 2013:

	Three Months Ended
(In thousands)	December 30, 2012		Charges (Benefits)			Payments			March 31, 2013
October 2012 Plan:
Severance and benefits	$	24,439	$	(1,083	)	$	(5,606	)	$	17,750
Lease and related termination costs	714		70			(135		)	649
Other costs (1)	358		435			(482		)	311
Legacy Restructuring Plans:
Severance and benefits	60		—			(41		)	19
Lease and related termination costs	2,436		217			(510		)	2,143
Other costs (1)	1,470		24			(643		)	851
Total restructuring liabilities	$	29,477	$	(337	)	$	(7,417	)	$	21,723

(1) Other costs primarily represent associated legal services and costs associated with the decommissioning of Fab 1 assets.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies [Text Block]

COMMITMENTS AND CONTINGENCIES

Lease Commitments

As of March 31, 2013, future minimum obligations under non-cancellable capital and operating leases are as follows:

	Capital Lease		Operating Lease
(In thousands)	Amount		Amount
Year
2013 (remaining nine months)	$	1,475	$	17,355
2014	1,379		17,479
2015	1,181		15,966
2016	941		15,249
2017	1,330		12,749
Thereafter	1,885		85,502
	$	8,191	$	164,300

Facilities and Equipment

The Company leases its corporate headquarters in San Jose, California and its Richmond, California facility under non-cancellable operating leases from unaffiliated third parties. The Company also has various other lease arrangements, including its European headquarters located in Geneva, Switzerland as well as sales and support offices throughout the United States and Europe including locations in Austin, Texas and La Tour de Salvagny, France. In August 2011, the Company entered into a non-cancellable operating lease agreement for its solar module facility in Mexicali, Mexico from an unaffiliated third party.

The Company additionally leases certain buildings, machinery and equipment under capital leases for terms up to 12 years.

Sale-Leaseback Arrangements

The Company enters into sale-leaseback arrangements under which solar power systems are sold to third parties and subsequently leased back over minimum lease terms of up to 20 years. Separately, the Company enters into power purchase agreements ("PPAs") with end customers, who host the leased solar power systems and buy the electricity directly from the Company under PPAs with durations of up to 20 years. At the end of the lease term, the Company has the option to purchase the systems at fair value or may be required to remove the systems and return them to the third parties.

The Company has classified its sale-leaseback arrangements of solar power systems not involving integral equipment as operating leases. The deferred profit on the sale of these systems is recognized over the term of the lease. Future minimum lease obligations associated with these systems is included in the table above. As of March 31, 2013, future minimum payments to be received from customers under PPAs associated with the solar power systems under sale-leaseback arrangements classified as operating leases was $79.1 million, which will be recognized over the lease term of up to 20 years.

In the first quarter of fiscal 2013, the Company entered into a sale-leaseback arrangement under which the system under the sale-leaseback arrangement was determined to be integral equipment as defined under the accounting guidance for such transactions. The Company was further determined to have continuing involvement with the solar power system throughout the lease due to purchase option rights. As a result of such continuing involvement, the Company accounts for the transaction as a financing. Under the financing method, the proceeds received from the sale of the solar power system are recorded by the Company as a financing liability and presented within "Accrued liabilities" and "Other long-term liabilities" within the Company's Condensed Consolidated Balance Sheets (see Note 4). The financing liability is subsequently reduced by the Company's payments to lease back the solar power system, less interest expense calculated under the interest method. The solar power system under the sale-leaseback arrangement remains on the Company's balance sheet and is classified within "Property, plant and equipment, net" (see Note 4). As of March 31, 2013, future minimum lease obligations for the sale-leaseback arrangement accounted for under the financing method was $37.0 million, which will be recognized over the lease term of 20 years.

Purchase Commitments

The Company purchases raw materials for inventory and manufacturing equipment from a variety of vendors. During the normal course of business, in order to manage manufacturing lead times and help assure adequate supply, the Company enters into agreements with contract manufacturers and suppliers that either allow them to procure goods and services based on specifications defined by the Company, or that establish parameters defining the Company's requirements. In certain instances, these agreements allow the Company the option to cancel, reschedule or adjust the Company's requirements based on its business needs prior to firm orders being placed. Consequently, only a portion of the Company's disclosed purchase commitments arising from these agreements are firm, non-cancellable, and unconditional commitments.

The Company also has agreements with several suppliers, including some of its non-consolidated investees, for the procurement of polysilicon, ingots, wafers, solar cells, solar panels, and Solar Renewable Energy Credits ("SRECs") which specify future quantities and pricing of products to be supplied by the vendors for periods up to 10 years and provide for certain consequences, such as forfeiture of advanced deposits and liquidated damages relating to previous purchases, in the event that the Company terminates the arrangements.

Future purchase obligations under non-cancellable purchase orders and long-term supply agreements as of March 31, 2013 are as follows:

(In thousands)	Amount
Year
2013 (remaining nine months)	$	716,696
2014	451,338
2015	360,508
2016	326,726
2017	194,845
Thereafter	517,095
	$	2,567,208

As of March 31, 2013, total obligations related to non-cancellable purchase orders totaled $0.2 billion and long-term supply agreements with suppliers totaled $2.4 billion. Of the total future purchase commitments of $2.6 billion as of March 31, 2013, $101.7 million are for commitments to related parties.

The Company has tolling agreements with suppliers in which the Company provides polysilicon required for silicon ingot manufacturing and procures the manufactured silicon ingots from the supplier. Annual future purchase commitments in the table above are calculated using the gross future purchase obligations of the Company and are not reduced by tolling agreements and non-cancellable SREC sales arrangements. Total future purchase commitments as of March 31, 2013 would be reduced by $248.6 million had the Company's obligations under such agreements been disclosed using net cash outflows.

The Company expects that all obligations related to non-cancellable purchase orders for manufacturing equipment will be recovered through future cash flows of the solar cell manufacturing lines and solar panel assembly lines when such long-lived assets are placed in service. Factors considered important that could result in an impairment review include significant under-performance relative to expected historical or projected future operating results, significant changes in the manner of use of acquired assets, and significant negative industry or economic trends. Obligations related to non-cancellable purchase orders for inventories match current and forecasted sales orders that will consume these ordered materials and actual consumption of these ordered materials are compared to expected demand regularly. The Company anticipates total obligations related to long-term supply agreements for inventories will be recovered because quantities are less than management's expected demand for its solar power products. The terms of the long-term supply agreements are reviewed by management and the Company assesses the need for any accruals for estimated losses on adverse purchase commitments, such as lower of cost or market value adjustments that will not be recovered by future sales prices, forfeiture of advanced deposits and liquidated damages, as necessary.

Advances to Suppliers

As noted above, the Company has entered into agreements with various polysilicon, ingot, wafer, solar cell, and solar panel vendors that specify future quantities and pricing of products to be supplied by the vendors for periods up to 10 years. Certain agreements also provide for penalties or forfeiture of advanced deposits in the event the Company terminates the arrangements. Under certain agreements, the Company is required to make prepayments to the vendors over the terms of the arrangements. During the three months ended March 31, 2013, the Company paid advances totaling $8.3 million, in accordance with the terms of existing long-term supply agreements. As of March 31, 2013 and December 30, 2012, advances to suppliers totaled $355.7 million and $351.4 million, respectively, the current portion of which is $64.7 million and $50.3 million, respectively. Two suppliers accounted for 75% and 25% of total advances to suppliers as of March 31, 2013, and 76% and 23% as of December 30, 2012.

The Company's future prepayment obligations related to these agreements as of March 31, 2013 are as follows:

(In thousands)	Amount
Year
2013 (remaining nine months)	$	72,813
2014	65,791
	$	138,604

Advances from Customers

In fiscal 2010, the Company and its joint venture, AUO SunPower Sdn. Bhd. ("AUOSP") entered into an agreement under which the Company will resell to AUOSP polysilicon purchased from a third-party supplier and AUOSP will provide prepayments to the Company related to such polysilicon, which prepayments will then be made by the Company to the third-party supplier. These advance payments will be applied as a credit against AUOSP’s polysilicon purchases from the Company. Such polysilicon is used by AUOSP to manufacture solar cells which are sold to the Company on a "cost-plus" basis. As of March 31, 2013 and December 30, 2012, the outstanding advance was $188.6 million and $190.1 million, respectively, of which $10.8 million and $8.8 million, respectively, has been classified in short-term customer advances and $177.8 million and $181.3 million, respectively, in long-term customer advances in the Condensed Consolidated Balance Sheet, based on projected product shipment dates.

In fiscal 2007, the Company entered into an agreement with a third party to supply polysilicon. Under the polysilicon agreement, the Company received advances of $40.0 million in each of fiscal 2008 and 2007 from this third party. These advance payments are applied as a credit against the third party’s polysilicon purchases from the Company. Such polysilicon is used by the third party to manufacture ingots and wafers, which can be sold to the Company or other customers. As of March 31, 2013 and December 30, 2012, the outstanding advance was $55.3 million and $56.1 million, respectively, of which $9.3 million and $8.1 million, respectively, has been classified in short-term customer advances and $46.0 million and $48.0 million, respectively, in long-term customer advances in the Condensed Consolidated Balance Sheet. As of both March 31, 2013 and December 30, 2012, the advances were collateralized by $32.0 million in letters of credit issued under the Company's letter of credit facility with Deutsche Bank, which is fully guaranteed by Total S.A. The Company additionally provided security for the advances in the form of collateralized manufacturing equipment (see Note 4).

The Company has also entered into other agreements with customers who have made advance payments for solar power products. These advances will be applied as shipments of product occur or upon completion of certain project milestones. As of March 31, 2013 and December 30, 2012, such customers had made advances of $50.0 million and $49.5 million, respectively, in the aggregate.

The estimated utilization of advances from customers as of March 31, 2013 is as follows:

(In thousands)	Amount
Year
2013 (remaining nine months)	$	64,612
2014	22,060
2015	26,387
2016	30,713
2017	35,039
Thereafter	115,144
	$	293,955

Product Warranties

The Company generally warrants or guarantees the performance of the solar panels that it manufactures at certain levels of power output for 25 years. In addition, the Company passes through to customers long-term warranties from OEMs of certain system components, such as inverters. Warranties of 25 years from solar panels suppliers are standard in the solar industry, while inverters typically carry warranty periods ranging from 5 to 10 years. In addition, the Company generally warrants its workmanship on installed systems for periods ranging up to 10 years. The Company maintains reserves to cover the expected costs that could result from these warranties. The Company's expected costs are generally in the form of product replacement or repair. Warranty reserves are based on the Company's best estimate of such costs and are recognized as a cost of revenue. The Company continuously monitors product returns for warranty failures and maintains a reserve for the related warranty expenses based on various factors including historical warranty claims, results of accelerated lab testing, field monitoring, vendor reliability estimates, and data on industry averages for similar products. Historically, warranty costs have been within management's expectations.

Provisions for warranty reserves charged to cost of revenue were $4.5 million and $9.4 million in the three months ended March 31, 2013 and April 1, 2012, respectively:

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012
Balance at the beginning of the period	$	117,172		$	94,323
Accruals for warranties issued during the period	4,455			9,448
Settlements made during the period	(2,078		)	(932		)
Balance at the end of the period	$	119,549		$	102,839

Contingent Obligations

Projects often require the Company to undertake obligations including: (i) system output performance guarantees; (ii) system maintenance; (iii) penalty payments or customer termination rights if the system the Company is constructing is not commissioned within specified timeframes or other milestones are not achieved; and (iv) system put-rights whereby the Company could be required to buy-back a customer's system at fair value on specified future dates if certain minimum performance thresholds are not met for periods of up to two years. Historically the systems have performed significantly above the performance guarantee thresholds, and there have been no cases in which the Company had to buy back a system.

Future Financing Commitments

The Company is required to provide certain funding under the joint venture agreement with AU Optronics Singapore Pte. Ltd. ("AUO") and another financing agreement with a third party, subject to certain conditions (see Note 8).

The Company's future financing obligations related to these agreements as of March 31, 2013 are as follows:

(In thousands)	Amount
Year
2013 (remaining nine months)	$	150,211
2014	96,770
	$	246,981

Liabilities Associated with Uncertain Tax Positions

Total liabilities associated with uncertain tax positions were $35.6 million and $35.0 million as of March 31, 2013 and December 30, 2012, respectively, and are included in "Other long-term liabilities" in the Company's Condensed Consolidated Balance Sheets as they are not expected to be paid within the next twelve months. Due to the complexity and uncertainty associated with its tax positions, the Company cannot make a reasonably reliable estimate of the period in which cash settlement, if any, would be made for its liabilities associated with uncertain tax positions in other long-term liabilities.

Indemnifications

The Company is a party to a variety of agreements under which it may be obligated to indemnify the other party with respect to certain matters. Typically, these obligations arise in connection with contracts and license agreements or the sale of assets, under which the Company customarily agrees to hold the other party harmless against losses arising from a breach of warranties, representations and covenants related to such matters as title to assets sold, negligent acts, damage to property, validity of certain intellectual property rights, non-infringement of third-party rights, and certain tax related matters including indemnification to customers under §48(c) solar commercial investment tax credit and Treasury Grant payments under Section 1603 of the American Recovery and Reinvestment Act. In each of these circumstances, payment by the Company is typically subject to the other party making a claim to the Company under the procedures specified in the particular contract. These procedures usually allow the Company to challenge the other party's claims or, in case of breach of intellectual property representations or covenants, to control the defense or settlement of any third party claims brought against the other party. Further, the Company's obligations under these agreements may be limited in terms of activity (typically to replace or correct the products or terminate the agreement with a refund to the other party), duration and/or amounts. In some instances, the Company may have recourse against third parties and/or insurance covering certain payments made by the Company.

Legal Matters

Three securities class action lawsuits were filed against the Company and certain of its current and former officers and directors in the United States District Court for the Northern District of California on behalf of a class consisting of those who acquired the Company's securities from April 17, 2008 through November 16, 2009. The cases were consolidated as In re SunPower Securities Litigation, Case No. CV-09-5473-RS (N.D. Cal.), and lead plaintiffs and lead counsel were appointed on March 5, 2010. Lead plaintiffs filed a consolidated complaint on May 28, 2010. The actions arise from the Audit Committee's investigation announcement on November 16, 2009 regarding certain unsubstantiated accounting entries. The consolidated complaint alleges that the defendants made material misstatements and omissions concerning the Company's financial results for 2008 and 2009, seeks an unspecified amount of damages, and alleges violations of sections 10(b) and 20(a) of the Securities Exchange Act of 1934, and sections 11 and 15 of the Securities Act of 1933. The court held a hearing on the defendants' motions to dismiss the consolidated complaint on November 4, 2010. The court dismissed the consolidated complaint with leave to amend on March 1, 2011. An amended complaint was filed on April 18, 2011. The amended complaint added two former employees of the Company as defendants. Defendants filed motions to dismiss the amended complaint on May 23, 2011. The motions to dismiss the amended complaint were heard by the court on August 11, 2011. On December 19, 2011, the court granted in part and denied in part the motions to dismiss, dismissing the claims brought pursuant to sections 11 and 15 of the Securities Act of 1933 and the claims brought against the two newly added former employees. On December 14, 2012, the Company announced that it reached an agreement in principle to settle the consolidated securities class action lawsuit for $19.7 million. The Company recorded a charge in its fiscal fourth quarter of 2012 in the same amount which is further classified within "Accrued liabilities" on the Company's Condensed Consolidated Balance Sheets as of December 30, 2012. On February 1, 2013, the parties filed a stipulation of settlement and a motion for preliminary approval of the settlement. The court entered an order preliminarily approving the settlement on March 25, 2013. The settlement is subject to certain conditions, including final approval by the court after members of the proposed settlement class receive notice and an opportunity to be heard. The final approval hearing is currently scheduled to take place on July 3, 2013. Until the conditions to the settlement have been satisfied, there can be no assurance that the settlement will become final. If the settlement does not become final, the Company believes it has meritorious defenses to these allegations and will vigorously defend itself in these matters.

Derivative actions purporting to be brought on the Company's behalf have also been filed in state and federal courts against several of the Company's current and former officers and directors based on the same events alleged in the securities class action lawsuits described above. The California state derivative cases were consolidated as In re SunPower Corp. S'holder Derivative Litig., Lead Case No. 1-09-CV-158522 (Santa Clara Sup. Ct.), and co-lead counsel for plaintiffs have been appointed. The complaints assert state-law claims for breach of fiduciary duty, abuse of control, unjust enrichment, gross mismanagement, and waste of corporate assets. Plaintiffs filed a consolidated amended complaint on March 5, 2012. The federal derivative complaints were consolidated as In re SunPower Corp. S'holder Derivative Litig., Master File No. CV-09-05731-RS (N.D. Cal.), and lead plaintiffs and co-lead counsel were appointed on January 4, 2010. The federal complaints assert state-law claims for breach of fiduciary duty, waste of corporate assets, and unjust enrichment, and seek an unspecified amount of damages. Plaintiffs filed a consolidated complaint on May 13, 2011. A Delaware state derivative case, Brenner v. Albrecht, et al., C.A. No. 6514-VCP (Del Ch.), was filed on May 23, 2011 in the Delaware Court of Chancery. The complaint asserts state-law claims for breach of fiduciary duty and contribution and indemnification, and seeks an unspecified amount of damages. The Company intends to oppose all the derivative plaintiffs' efforts to pursue this litigation on the Company's behalf. Defendants moved to stay or dismiss the Delaware derivative action on July 5, 2011. The motion to stay was heard by the court on October 27, 2011, and on January 27, 2012 the court granted the Company's motion and stayed the case indefinitely subject to the plaintiffs seeking to lift the stay under specified conditions. The Company is currently unable to determine if the resolution of these matters will have an adverse effect on the Company's financial position, liquidity or results of operations.

The Company is also a party to various other litigation matters and claims that arise from time to time in the ordinary course of its business. While the Company believes that the ultimate outcome of such matters will not have a material adverse effect on the Company, their outcomes are not determinable and negative outcomes may adversely affect the Company's financial position, liquidity or results of operations.

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Debt and Credit Sources

3 Months Ended

Mar. 31, 2013

Debt Disclosure [Abstract]

Debt and Credit Sources [Text Block]

DEBT AND CREDIT SOURCES

The following table summarizes the Company's outstanding debt as of March 31, 2013 and the related maturity dates:

			Payments Due by Period
(In thousands)	Face Value		2013 (remaining nine months)		2014		2015		2016		2017		Beyond 2017
Convertible debt:
4.50% debentures	$	250,000	$	—	$	—	$	250,000	$	—	$	—	$	—
4.75% debentures	230,000		—		230,000		—		—		—		—
0.75% debentures	79		—		—		79		—		—		—
IFC mortgage loan	70,000		7,500		15,000		15,000		15,000		15,000		2,500
CEDA loan	30,000		—		—		—		—		—		30,000
Credit Agricole revolving credit facility	100,000		—		100,000		—		—		—		—
Other debt (1)	25,355		74		1,137		1,075		975		952		21,142
	$	705,434	$	7,574	$	346,137	$	266,154	$	15,975	$	15,952	$	53,642

(1) The balance of Other debt excludes payments related to capital leases which are disclosed in Note 7. "Commitments and Contingencies" to these condensed consolidated financial statements.

Convertible Debt

The following table summarizes the Company's outstanding convertible debt:

	March 31, 2013						December 30, 2012
(In thousands)	Carrying Value		Face Value		Fair Value (1)		Carrying Value		Face Value		Fair Value (1)
Convertible debt:
4.50% debentures	$	212,631	$	250,000	$	250,823	$	208,550	$	250,000	$	228,750
4.75% debentures	230,000		230,000		229,425		230,000		230,000		218,960
0.75% debentures	79		79		79		79		79		79
	$	442,710	$	480,079	$	480,327	$	438,629	$	480,079	$	447,789

(1) The fair value of the convertible debt was determined using Level 1 inputs based on quarterly market prices as reported by an independent pricing source.

4.50% Debentures

In fiscal 2010, the Company issued $250.0 million in principal amount of its 4.50% senior cash convertible debentures ("4.50% debentures"). Interest is payable semi-annually, on March 15 and September 15 of each year, at a rate of 4.50% per annum which commenced on September 15, 2010. The 4.50% debentures mature on March 15, 2015 unless repurchased or converted in accordance with their terms prior to such date.

The 4.50% debentures are convertible only into cash, and not into shares of the Company's common stock (or any other securities). Prior to December 15, 2014, if the weighted average price of the Company's common stock is more than 130% of the then current conversion price for at least 20 out of 30 consecutive trade days in the last month of the fiscal quarter, then holders of the 4.50% debentures have the right to convert the debentures any day in the following fiscal quarter and, thereafter, they will be convertible at any time, based on an initial conversion price of $22.53 per share of the Company's common stock. The conversion price will be subject to adjustment in certain events, such as distributions of dividends or stock splits. Upon conversion, the Company will deliver an amount of cash calculated by reference to the price of its common stock over the applicable observation period. The Company may not redeem the 4.50% debentures prior to maturity. Holders may also require the Company to repurchase all or a portion of their 4.50% debentures upon a fundamental change, as defined in the debenture agreement, at a cash repurchase price equal to 100% of the principal amount plus accrued and unpaid interest. In the event of certain events of default, such as the Company's failure to make certain payments or perform or observe certain obligations thereunder, Wells Fargo, the trustee, or holders of a specified amount of then-outstanding 4.50% debentures will have the right to declare all amounts then outstanding due and payable.

The embedded cash conversion option within the 4.50% debentures is a derivative instrument that is required to be separated from the 4.50% debentures and accounted for separately as a derivative instrument (derivative liability) with changes in fair value reported in the Company's Condensed Consolidated Statements of Operations until such transaction settles or expires. The initial fair value liability of the embedded cash conversion option was classified within "Other long-term liabilities" and simultaneously reduced the carrying value of "Convertible debt, net of current portion" in the Company's Condensed Consolidated Balance Sheet.

During the three months ended March 31, 2013 and April 1, 2012, the Company recognized a non-cash loss of $11.6 million and $1.6 million, respectively, recorded in "Other, net" in the Company's Condensed Consolidated Statement of Operations related to the change in fair value of the embedded cash conversion option.

Call Spread Overlay with Respect to 4.50% Debentures ("CSO2015")

Concurrent with the issuance of the 4.50% debentures, the Company entered into privately negotiated convertible debenture hedge transactions (collectively, the "4.50% Bond Hedge") and warrant transactions (collectively, the "4.50% Warrants" and together with the 4.50% Bond Hedge, the “CSO2015”), with certain of the initial purchasers of the 4.50% cash convertible debentures or their affiliates. The CSO2015 transactions represent a call spread overlay with respect to the 4.50% debentures, whereby the cost of the 4.50% Bond Hedge purchased by the Company to cover the cash outlay upon conversion of the debentures is reduced by the sales prices of the 4.50% Warrants. Assuming full performance by the counterparties (and 4.50% Warrants strike prices in excess of the conversion price of the 4.50% debentures), the transactions effectively reduce the Company's potential payout over the principal amount on the 4.50% debentures upon conversion of the 4.50% debentures.

Under the terms of the 4.50% Bond Hedge, the Company bought from affiliates of certain of the initial purchasers options to acquire, at an exercise price of $22.53 per share, subject to customary adjustments for anti-dilution and other events, cash in an amount equal to the market value of up to 11.1 million shares of the Company's common stock. Under the terms of the amended 4.50% Warrants the Company sold to affiliates of certain of the initial purchasers of the 4.50% cash convertible debentures warrants to acquire, at an exercise price of $24.00 per share, up to 11.1 million shares of the Company's common stock. Each 4.50% Bond Hedge and 4.50% Warrant transaction is a separate transaction, entered into by the Company with each counterparty, and is not part of the terms of the 4.50% debentures.

The 4.50% Bond Hedge, which is indexed to the Company's common stock, is a derivative instrument that requires mark-to-market accounting treatment due to the cash settlement features until such transactions settle or expire. The initial fair value of the 4.50% Bond Hedge was classified as "Other long-term assets" in the Company's Condensed Consolidated Balance Sheets.

During the three months ended March 31, 2013 and April 1, 2012, the Company recognized a non-cash gain of $11.6 million and $1.6 million, respectively, in "Other, net" in the Company's Condensed Consolidated Statement of Operations in the Company's Condensed Consolidated Statement of Operations related to the change in fair value of the 4.50% Bond Hedge.

4.75% Debentures

In May 2009, the Company issued $230.0 million in principal amount of its 4.75% senior convertible debentures ("4.75% debentures"). Interest on the 4.75% debentures is payable on April 15 and October 15 of each year. Holders of the 4.75% debentures are able to exercise their right to convert the debentures at any time into shares of the Company's common stock at a conversion price equal to $26.40 per share. The applicable conversion rate may adjust in certain circumstances, including upon a fundamental change, as described in the indenture governing the 4.75% debentures. If not earlier converted, the 4.75% debentures mature on April 15, 2014. Holders may also require the Company to repurchase all or a portion of their 4.75% debentures upon a fundamental change at a cash repurchase price equal to 100% of the principal amount plus accrued and unpaid interest. In the event of certain events of default, such as the Company's failure to make certain payments or perform or observe certain obligations thereunder, Wells Fargo, the trustee, or holders of a specified amount of then-outstanding 4.75% debentures will have the right to declare all amounts then outstanding due and payable.

Call Spread Overlay with Respect to the 4.75% Debentures ("CSO2014")

Concurrent with the issuance of the 4.75% debentures, the Company entered into certain convertible debenture hedge transactions (the "4.75% Bond Hedge") and warrant transactions (the "4.75% Warrants") with affiliates of certain of the underwriters of the 4.75% debentures (the "CSO2014"), whereby the cost of the 4.75% Bond Hedges purchased by the Company to cover the potential share outlays upon conversion of the debentures is reduced by the sales prices of the 4.75% Warrants. The CSO2014 are not subject to mark-to-market accounting treatment since they may only be settled by issuance of the Company's common stock.

The 4.75% Bond Hedge allows the Company to purchase up to 8.7 million shares of the Company's common stock. The 4.75% Bond Hedge will be settled on a net share basis. Each 4.75% Bond Hedge and 4.75% Warrant is a separate transaction, entered into by the Company with each counterparty, and is not part of the terms of the 4.75% debentures. Holders of the 4.75% debentures do not have any rights with respect to the 4.75% Bond Hedges and 4.75% Warrants. The exercise prices of the 4.75% Bond Hedge are $26.40 per share of the Company's common stock, subject to customary adjustment for anti-dilution and other events.

Under the amended 4.75% Warrants, the Company sold warrants to acquire up to 8.7 million shares of the Company's common stock at an exercise price of $26.40 per share of the Company's common stock, subject to adjustment for certain anti-dilution and other events. The 4.75% Warrants expire in 2014.

1.25% Debentures

In fiscal 2007, the Company issued $200.0 million in principal amount of its 1.25% senior convertible debentures and received net proceeds of $194.0 million. During the fourth quarter of fiscal 2008, the Company received notices for the conversion of $1.4 million in principal amount of the 1.25% debentures which it settled for $1.2 million in cash and 1,000 shares of common stock. As of January 2, 2012, an aggregate principal amount of $198.6 million of the 1.25% debentures remained issued and outstanding. The 1.25% debentures had a maturity date of February 15, 2027 unless repurchased or converted in accordance with their terms prior to such date. Holders had the option to require the Company to repurchase all or a portion of their 1.25% debentures on each of February 15, 2012, February 15, 2017 and February 15, 2022, or if the Company experiences certain types of corporate transactions constituting a fundamental change, as defined in the indenture governing the 1.25% debentures. In addition, the Company could redeem some or all of the 1.25% debentures on or after February 15, 2012. Accordingly, the Company classified the 1.25% debentures as short-term liabilities in the Condensed Consolidated Balance Sheets as of January 2, 2012. On February 16, 2012, based upon the exercise of the holders' put rights, the Company repurchased $198.6 million in principal amount of the 1.25% debentures at a cash price of $199.8 million, representing 100% of the principal amount of the 1.25% debentures plus accrued and unpaid interest. None of the 1.25% debentures remained issued and outstanding after the repurchase.

July 2007 Share Lending Arrangement

Concurrent with the offering of the Company's 0.75% debentures, the Company lent 1.8 million shares of its former class A common stock to Credit Suisse International ("CSI"), an affiliate of Credit Suisse Securities (USA) LLC ("Credit Suisse"), one of the underwriters of the 0.75% debentures. The loaned shares were to be used to facilitate the establishment by investors in the 1.25% debentures and 0.75% debentures of hedged positions in the Company's common stock. The Company did not receive any proceeds from these offerings of former class A common stock, but received a nominal lending fee of $0.001 per share for each share of common stock that is loaned under the share lending agreement.

As of January 1, 2012, the fair value of the 1.8 million outstanding loaned shares of common stock was $11.2 million. In connection with the Company's repurchase of 100% of the principal amount of the 1.25% debentures, on February 23, 2012, the 1.8 million shares of the Company's common stock lent to CSI were returned and the share lending agreement was thereby terminated.

Other Debt and Credit Sources

Mortgage Loan Agreement with IFC

On May 6, 2010, the Company entered into a mortgage loan agreement with IFC. Under the loan agreement, the Company may borrow up to $75.0 million during the first two years, and shall repay the amount borrowed, starting 2 years after the date of borrowing, in 10 equal semiannual installments over the following 5 years. On October 3, 2012, IFC granted a temporary waiver of a financial covenant for the fourth quarter of fiscal 2012 through the fourth quarter of fiscal 2013. Subsequent to the waiver, the Company is required to pay interest of LIBOR plus 3% per annum on outstanding borrowings through January 5, 2013; interest of LIBOR plus 4.25% per annum on outstanding borrowings from January 6, 2013 through September 30, 2013; interest of LIBOR plus 5% per annum on outstanding borrowings from October 1, 2013 through January 5, 2014; a front-end fee of 1% on the principal amount of borrowings at the time of borrowing; and a commitment fee of 0.5% per annum on funds available for borrowing and not borrowed. If we utilize the waiver for the fourth quarter of 2013, the 2013 rates would continue to apply in 2014. If the Company does not need to utilize the waiver, it is required to pay interest of LIBOR plus 3% per annum on outstanding borrowings; a front-end fee of 1% on the principal amount of borrowings at the time of borrowing; and a commitment fee of 0.5% per annum on funds available for borrowing and not borrowed. The Company may prepay all or a part of the outstanding principal, subject to a 1% prepayment premium. The Company has pledged certain assets as collateral supporting its repayment obligations (see Note 4). Additionally, in accordance with the terms of the agreement, the Company is required to establish a debt service reserve account which shall contain the amount, as determined by IFC, equal to the aggregate principal and interest due on the next succeeding interest payment date after such date. As of March 31, 2013 and December 30, 2012, the Company had restricted cash and cash equivalents of $9.2 million and $6.4 million, respectively, related to the IFC debt service reserve.

The Company's outstanding borrowings under the mortgage loan agreement with IFC on its Condensed Consolidated Balance Sheets are as follows:

	As of
(In thousands)	March 31, 2013		December 30, 2012
Short-term debt	$	15,000	$	12,500
Long-term debt	55,000		62,500
	$	70,000	$	75,000

Loan Agreement with California Enterprise Development Authority ("CEDA")

On December 29, 2010, the Company borrowed the proceeds of the $30.0 million aggregate principal amount of CEDA's tax-exempt Recovery Zone Facility Revenue Bonds (SunPower Corporation - Headquarters Project) Series 2010 (the "Bonds") maturing April 1, 2031 under a loan agreement with CEDA. The Company's obligations under the loan agreement are contained in a promissory note dated December 29, 2010 issued by the Company to CEDA, which assigned the promissory note, along with all right, title and interest in the loan agreement, to Wells Fargo, as trustee, with respect to the Bonds for the benefit of the holders of the Bonds. The Bonds initially bore interest at a variable interest rate (determined weekly), but in June 2011, at the Company's option, were converted into fixed-rate bonds at 8.50% per annum (which include covenants of, and other restrictions on the Company). Additionally, in accordance with the terms of the loan agreement, the Company is required to keep all loan proceeds on deposit with Wells Fargo, the trustee, until funds are withdrawn by it for use in relation to the design and leasehold improvements of its new corporate headquarters in San Jose, California. As of both March 31, 2013 and December 30, 2012, the Company had restricted cash and cash equivalents of $3.0 million, for design and leasehold improvements and debt service reserves under the CEDA loan agreement.

The Company's outstanding borrowings under the loan agreement with CEDA on its Condensed Consolidated Balance Sheets is as follows:

	As of
(In thousands)	March 31, 2013		December 30, 2012
Long-term debt	$	30,000	$	30,000

September 2011 Revolving Credit Facility with Credit Agricole

On September 27, 2011, the Company entered into a revolving credit agreement with Credit Agricole, as administrative agent, and certain financial institutions, under which the Company may borrow up to $275.0 million until September 27, 2013. Amounts borrowed may be repaid and reborrowed until September 27, 2013.

On December 24, 2012, the Company amended the facility to reflect Total S.A.'s guarantee of its obligations under the facility. The facility amendment extended the maturity date to January 31, 2014, reduced interest rates payable and removed certain financial and restrictive covenants. Subsequent to the amendment, the Company is required to pay interest on outstanding borrowings of (a) with respect to any LIBOR loan, 0.6% plus the LIBOR divided by a percentage equal to one minus the stated maximum rate of all reserves required to be maintained against "Eurocurrency liabilities" as specified in Regulation D; and (b) with respect to any alternative base loan, 0.25% plus the greater of (1) the prime rate, (2) the Federal Funds rate plus 0.5%, and (3) the one month LIBOR plus 1%; and a commitment fee equal to 0.06% per annum on funds available for borrowing and not borrowed.

The Company's outstanding borrowings under the revolving credit facility with Credit Agricole on its Condensed Consolidated Balance Sheets is as follows:

	As of
(In thousands)	March 31, 2013		December 30, 2012
Short-term debt	$	100,000	—
Long-term debt	—		275,000

Liquidity Support Agreement with Total S.A.

On February 28, 2012, the Company entered into a Liquidity Support Agreement with Total S.A. and the DOE, and a series of related agreements with Total S.A. and Total, under which Total S.A. has agreed to provide the Company, or cause to be provided, additional liquidity under certain circumstances (see Note 2). As of March 31, 2013, $325.0 million remained available to the Company under the facility.

Other Debt

In order to facilitate the construction and sale of certain solar projects, the Company obtains non-recourse project loans which in certain cases permit customers to assume the loans at the time of sale. These loans are contemplated as part of the structure of the sales transaction and not guaranteed or otherwise supported by SunPower. During the first quarter of fiscal 2013, the Company drew down ILS 87.7 million (or approximately $24.1 million based on the exchange rate as of March 31, 2013) under two long-term project loans with a consortium of lenders to facilitate the development of two 10 MW utility and power plant projects under construction in Israel.

Other debt is further comprised of non-recourse project loans related to Tenesol established in 2003 and 2008 which are scheduled to mature through 2028 and totaled $1.0 million and $1.1 million as of March 31, 2013 and December 30, 2012, respectively. Also, the Company's sublessor has made improvements to one of the Company's operating leases, reimbursable by the Company at monthly installments over the remaining lease term. The outstanding balance of the loan as of March 31, 2013 was $0.3 million.

The Company's other outstanding borrowings on its Condensed Consolidated Balance Sheets are as follows:

	As of
(In thousands)	March 31, 2013		December 30, 2012
Short-term debt	$	74	$	134
Long-term debt	25,281		1,234
	$	25,355	$	1,368

August 2011 Letter of Credit Facility with Deutsche Bank

On August 9, 2011, the Company entered into a letter of credit facility agreement with Deutsche Bank, as issuing bank and as administrative agent, and certain financial institutions, which was amended on December 20, 2011. Payment of obligations under the letter of credit facility is guaranteed by Total S.A. pursuant to the Credit Support Agreement. The letter of credit facility provides for the issuance, upon request by the Company, of letters of credit by the issuing banks thereunder in order to support certain obligations of the Company, in an aggregate amount not to exceed (a) $725.0 million until December 31, 2012; and (b) $771.0 million for the period from January 1, 2013 through December 31, 2013. Aggregate letter of credit amounts may be increased upon the agreement of the parties but, otherwise, may not exceed (i) $878.0 million for the period from January 1, 2014 through December 31, 2014; (ii) $936.0 million for the period from January 1, 2015 through December 31, 2015; and (iii) $1.0 billion for the period from January 1, 2016 through June 28, 2016. Each letter of credit issued under the letter of credit facility must have an expiration date no later than the second anniversary of the issuance of that letter of credit, provided that up to 15% of the outstanding value of the letters of credit may have an expiration date of between two and three years from the date of issuance.

As of March 31, 2013 and December 30, 2012, letters of credit issued under the August 2011 letter of credit facility with Deutsche Bank totaled $703.3 million and $725.3 million, respectively.

September 2011 Letter of Credit Facility with Deutsche Bank Trust

On September 27, 2011, the Company entered into a letter of credit facility with Deutsche Bank Trust which provides for the issuance, upon request by the Company, of letters of credit to support obligations of the Company in an aggregate amount not to exceed $200.0 million. Each letter of credit issued under the facility is fully cash-collateralized and the Company has entered into a security agreement with Deutsche Bank Trust, granting them a security interest in a cash collateral account established for this purpose.

As of March 31, 2013 and December 30, 2012, letters of credit issued under the Deutsche Bank Trust facility amounted to $1.8 million and $17.5 million, respectively, which were fully collateralized with restricted cash on the Condensed Consolidated Balance Sheets.

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Segment Information (Tables)

3 Months Ended

Mar. 31, 2013

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Three Months Ended
(In thousands):	March 31, 2013		April 1, 2012
Revenue
Americas	$	484,122	$	281,493
EMEA	68,652		156,110
APAC	82,659		56,528
Total Revenue	635,433		494,131
Cost of revenue
Americas	416,081		242,119
EMEA	91,494		156,845
APAC	68,545		49,919
Total cost of revenue	576,120		448,883
Gross margin	$	59,313	$	45,248

	Three Months Ended
	March 31, 2013		April 1, 2012
Revenue by region (in thousands):
Americas (as reviewed by CODM)	$	423,321	$	367,696
Utility and power plant projects	60,801		(86,203		)
Americas	$	484,122	$	281,493
EMEA (as reviewed by CODM)	$	68,652	$	155,917
Other	—		193
EMEA	$	68,652	$	156,110
APAC	$	82,659	$	56,528

Cost of revenue by region (in thousands):
Americas (as reviewed by CODM)	$	285,785	$	306,880
Utility and power plant projects	128,939		(70,445		)
Stock-based compensation expense	778		1,129
Non-cash interest expense	220		218
Other	359		4,337
Americas	$	416,081	$	242,119
EMEA (as reviewed by CODM)	$	90,738	$	151,423
Stock-based compensation expense	441		965
Non-cash interest expense	129		176
Other	186		4,281
EMEA	$	91,494	$	156,845
APAC (as reviewed by CODM)	$	67,617	$	48,309
Stock-based compensation expense	491		265
Non-cash interest expense	179		65
Other	258		1,280
APAC	$	68,545	$	49,919

Gross margin by region:
Americas (as reviewed by CODM)	32	%	17	%
EMEA (as reviewed by CODM)	(32	)%	3	%
APAC (as reviewed by CODM)	18	%	15	%
Americas	14	%	14	%
EMEA	(33	)%	0	%
APAC	17	%	12	%

Depreciation by region (in thousands):
Americas	$	9,815	$	14,061
EMEA	5,833		10,967
APAC	7,972		4,043

Schedule of Revenue by Major Customers by Reporting Segments [Table Text Block]

		Three Months Ended
(As a percentage of total revenue)		March 31, 2013		April 1, 2012
Significant Customers:	Business Segment
NRG Solar, Inc.	Americas	44	%	23	%
MidAmerican Energy Holdings Company	Americas	13	%	*

* denotes less than 10% during the period

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Foreign Currency Derivatives - Net Gain (Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012	Dec. 30, 2012	Jan. 01, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Net unrealized gain on derivatives	$ 2,592	$ 4,723	$ (243)	$ 10,473
Net unrealized gain (loss) on derivatives	2,835	(5,750)
Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gain (loss) recognized in OCI (effective portion)	2,448	2,425
Sales [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Less: Loss (gain) reclassified from OCI to revenue (effective portion)	387	3,325
Other, Net [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Loss recognized in Other, net on derivatives (ineffective portion and amount excluded from effectiveness testing) (1)	(789)	(365)
Not Designated as Hedging Instrument [Member] | Other, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in Other, net	$ 166	$ (1,290)

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Segment Information

3 Months Ended

Mar. 31, 2013

Segment Reporting [Abstract]

Segment and Geographical Information [Text Block]

SEGMENT INFORMATION

The Company's President and Chief Executive Officer, as the CODM, has organized the Company, manages resource allocations and measures performance of the Company's activities among these three regional segments: (i) the Americas Segment, (ii) the EMEA Segment, and (iii) the APAC Segment. The Americas Segment includes both North and South America. The EMEA Segment includes European countries, as well as the Middle East and Africa. The APAC segment includes all Asia-Pacific countries.

The CODM assesses the performance of the three regional segments using information about their revenue and gross margin after certain adjustments to reflect the substance of the revenue transactions for certain utility and power plant projects, and adding back certain non-cash expenses such as stock-based compensation expense and interest expense, as well as other items including loss on change in European government incentives, accelerated depreciation associated with the Company's manufacturing step reduction program, and amortization of other intangible assets. The CODM does not review asset information by segment.

The following tables present revenue by segment, cost of revenue by segment and gross margin by segment and revenue by significant customer. Revenue is based on the destination of the shipments.

	Three Months Ended
(In thousands):	March 31, 2013		April 1, 2012
Revenue
Americas	$	484,122	$	281,493
EMEA	68,652		156,110
APAC	82,659		56,528
Total Revenue	635,433		494,131
Cost of revenue
Americas	416,081		242,119
EMEA	91,494		156,845
APAC	68,545		49,919
Total cost of revenue	576,120		448,883
Gross margin	$	59,313	$	45,248

	Three Months Ended
	March 31, 2013		April 1, 2012
Revenue by region (in thousands):
Americas (as reviewed by CODM)	$	423,321	$	367,696
Utility and power plant projects	60,801		(86,203		)
Americas	$	484,122	$	281,493
EMEA (as reviewed by CODM)	$	68,652	$	155,917
Other	—		193
EMEA	$	68,652	$	156,110
APAC	$	82,659	$	56,528

Cost of revenue by region (in thousands):
Americas (as reviewed by CODM)	$	285,785	$	306,880
Utility and power plant projects	128,939		(70,445		)
Stock-based compensation expense	778		1,129
Non-cash interest expense	220		218
Other	359		4,337
Americas	$	416,081	$	242,119
EMEA (as reviewed by CODM)	$	90,738	$	151,423
Stock-based compensation expense	441		965
Non-cash interest expense	129		176
Other	186		4,281
EMEA	$	91,494	$	156,845
APAC (as reviewed by CODM)	$	67,617	$	48,309
Stock-based compensation expense	491		265
Non-cash interest expense	179		65
Other	258		1,280
APAC	$	68,545	$	49,919

Gross margin by region:
Americas (as reviewed by CODM)	32	%	17	%
EMEA (as reviewed by CODM)	(32	)%	3	%
APAC (as reviewed by CODM)	18	%	15	%
Americas	14	%	14	%
EMEA	(33	)%	0	%
APAC	17	%	12	%

Depreciation by region (in thousands):
Americas	$	9,815	$	14,061
EMEA	5,833		10,967
APAC	7,972		4,043

		Three Months Ended
(As a percentage of total revenue)		March 31, 2013		April 1, 2012
Significant Customers:	Business Segment
NRG Solar, Inc.	Americas	44	%	23	%
MidAmerican Energy Holdings Company	Americas	13	%	*

* denotes less than 10% during the period

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Fair Value Measurements Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2013

Fair Value Disclosures [Abstract]

Fair Value, by Balance Sheet Grouping [Table Text Block]

The following table summarizes the Company's assets and liabilities measured and recorded at fair value on a recurring basis as of March 31, 2013 and December 30, 2012, respectively:

	March 31, 2013						December 30, 2012
(In thousands)	Total		Level 1		Level 2		Total		Level 1		Level 2
Assets
Cash and cash equivalents:
Money market funds (1)	$	97,000	$	97,000	$	—	$	117,254	$	117,254	$	—
Prepaid expenses and other current assets:
Foreign currency derivatives (Note 10)	7,652		—		7,652		1,275		—		1,275
Other long-term assets:
Debt derivatives (Note 9)	13,946		—		13,946		2,327		—		2,327
Total assets	$	118,598	$	97,000	$	21,598	$	120,856	$	117,254	$	3,602
Liabilities
Accrued liabilities:
Foreign currency derivatives (Note 10)	$	6,346	$	—	$	6,346	$	4,891	$	—	$	4,891
Other long-term liabilities:
Debt derivatives (Note 9)	13,946		—		13,946		2,327		—		2,327
Total liabilities	$	20,292	$	—	$	20,292	$	7,218	$	—	$	7,218

(1) The Company's cash equivalents consist of money market fund instruments which are classified as available-for-sale and within Level 1 of the fair value hierarchy because they are valued using quoted market prices for identical instruments in active markets.

Fair Value, Measurement Inputs, Disclosure [Table Text Block]

The fair values of these derivative instruments were determined utilizing the following Level 1 and Level 2 inputs:

	As of (1)
	March 31, 2013			December 30, 2012
Stock price	$	11.54		$	5.49
Exercise price	$	22.53		$	22.53
Interest rate	0.41		%	0.40		%
Stock volatility	55.6		%	59.9		%
Credit risk adjustment	1.13		%	1.07		%
Maturity date	February 18, 2015			February 18, 2015

(1) The valuation model utilizes these inputs to value the right but not the obligation to purchase one share at $22.53. The Company utilized a Black-Scholes valuation model to value the 4.50% Bond Hedge and embedded cash conversion option. The underlying input assumptions were determined as follows:

(i) Stock price. The closing price of the Company's common stock on the last trading day of the quarter.

(ii) Exercise price. The exercise price of the 4.50% Bond Hedge and the embedded cash conversion option.

(iii) Interest rate. The Treasury Strip rate associated with the life of the 4.50% Bond Hedge and the embedded cash conversion option.

(iv) Stock volatility. The volatility of the Company's common stock over the life of the 4.50% Bond Hedge and the embedded cash conversion option.

(v) Credit risk adjustment. Represents the weighted average of the credit default swap rate of the counterparties.

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Debt and Credit Sources - Convertible Debenture and Related Transactions (Details) (USD $)	3 Months Ended								12 Months Ended	3 Months Ended		12 Months Ended			0 Months Ended																1 Months Ended	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012		Mar. 31, 2013 Embedded Cash Conversion Option [Member]	Apr. 01, 2012 Embedded Cash Conversion Option [Member]	Mar. 31, 2013 Bond Hedge [Member]	Jul. 01, 2012 Bond Hedge [Member]	Mar. 31, 2013 4.50% Debentures [Member]	Dec. 30, 2012 4.50% Debentures [Member] Embedded Cash Conversion Option [Member]	Mar. 31, 2013 4.50% Debentures [Member] Bond Hedge [Member]		Dec. 30, 2012 4.50% Debentures [Member] Bond Hedge [Member]		Mar. 31, 2013 4.75% Debentures [Member]	Feb. 16, 2012 1.25% Debentures [Member]	Mar. 31, 2013 1.25% Debentures [Member]	Mar. 31, 2013 0.75% Debentures [Member]	Mar. 31, 2013 IFC Mortgage Loan [Member]	Dec. 30, 2012 IFC Mortgage Loan [Member]	Mar. 31, 2013 Other Long-term Debt [Member]		Dec. 30, 2012 Other Long-term Debt [Member]	Mar. 31, 2013 Convertible Debt [Member]	Dec. 30, 2012 Convertible Debt [Member]	Mar. 31, 2013 Convertible Debt [Member] 4.50% Debentures [Member]	Dec. 30, 2012 Convertible Debt [Member] 4.50% Debentures [Member]	Apr. 01, 2010 Convertible Debt [Member] 4.50% Debentures [Member]	Mar. 31, 2013 Convertible Debt [Member] 4.75% Debentures [Member]	Dec. 30, 2012 Convertible Debt [Member] 4.75% Debentures [Member]	May 31, 2009 Convertible Debt [Member] 4.75% Debentures [Member]	Feb. 28, 2007 Convertible Debt [Member] 1.25% Debentures [Member]	Dec. 28, 2008 Convertible Debt [Member] 1.25% Debentures [Member]	Jan. 01, 2012 Convertible Debt [Member] 1.25% Debentures [Member]	Mar. 31, 2013 Convertible Debt [Member] 0.75% Debentures [Member]	Dec. 30, 2012 Convertible Debt [Member] 0.75% Debentures [Member]	Mar. 31, 2013 Mortgages [Member] IFC Mortgage Loan [Member]	May 06, 2010 Mortgages [Member] IFC Mortgage Loan [Member]	Mar. 31, 2013 Loans Payable [Member] CEDA Loan [Member]	Jun. 30, 2011 Loans Payable [Member] CEDA Loan [Member]	Dec. 29, 2010 Loans Payable [Member] CEDA Loan [Member]	Mar. 31, 2013 Line of Credit [Member] Credit Agricole Revolving Credit Facility [Member]	Dec. 30, 2012 Line of Credit [Member] Credit Agricole Revolving Credit Facility [Member]
Convertible Debt and Related Transactions [Line Items]
Convertible Debt																							$ 442,710,000	$ 438,629,000	$ 212,631,000	$ 208,550,000		$ 230,000,000	$ 230,000,000					$ 79,000	$ 79,000
Debt Instrument, Face Amount	705,434,000																			25,355,000			480,079,000	480,079,000	250,000,000	250,000,000	250,000,000	230,000,000	230,000,000		200,000,000		198,600,000	79,000	79,000	70,000,000				30,000,000	100,000,000
Option Indexed to Issuer's Equity, Strike Price									22.53	22.53	[1]	22.53	[1]
Repayments of Long-term Debt															199,800,000
Proceeds from Issuance of Debt																															194,000,000
Debt Instrument, Convertible, Call Feature, Amount Called																																1,400,000
Cash paid for repurchase of convertible debt	0	198,608,000	[2]																													1,200,000
Debt Instrument, Convertible, Number of Equity Instruments																																1,000
Debt Instrument, Interest Rate, Stated Percentage								4.50%						4.75%		1.25%	0.75%																						8.50%
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net				11,600,000	1,600,000	(11,600,000)	(1,600,000)
Derivative, Nonmonetary Notional Amount						11,100,000																								8,700,000
Debt Instrument, Maximum Borrowing Amount																																					75,000,000
Short-term Debt																		15,000,000	12,500,000	74,000		134,000
Long-term Debt, Fair Value																							480,327,000	447,789,000	250,823,000	228,750,000		229,425,000	218,960,000					79,000	79,000
Long-term Debt, Maturities, Repayments of Principal in Year Two	346,137,000																			1,137,000	[3]				0			230,000,000						0		15,000,000		0			100,000,000	275,000,000
Long-term Debt, Maturities, Repayments of Principal in Year Three	$ 266,154,000																			$ 1,075,000	[3]				$ 250,000,000			$ 0						$ 79,000		$ 15,000,000		$ 0			$ 0

[1] The valuation model utilizes these inputs to value the right but not the obligation to purchase one share at $22.53. The Company utilized a Black-Scholes valuation model to value the 4.50% Bond Hedge and embedded cash conversion option. The underlying input assumptions were determined as follows:(i)Stock price. The closing price of the Company's common stock on the last trading day of the quarter.(ii)Exercise price. The exercise price of the 4.50% Bond Hedge and the embedded cash conversion option.(iii)Interest rate. The Treasury Strip rate associated with the life of the 4.50% Bond Hedge and the embedded cash conversion option.(iv)Stock volatility. The volatility of the Company's common stock over the life of the 4.50% Bond Hedge and the embedded cash conversion option.(v)Credit risk adjustment. Represents the weighted average of the credit default swap rate of the counterparties.

[2] As adjusted to conform to the current period presentation for solar power systems leased and to be leased (see Note 1)

[3] The balance of Other debt excludes payments related to capital leases which are disclosed in Note 7. "Commitments and Contingencies" to these condensed consolidated financial statements.

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Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 30, 2012
Fair Value Disclosures [Abstract]
Marketable Securities, Restricted, Noncurrent	$ 10,860	$ 10,885
Equity Method Investments	111,184	111,516
Other Long-term Investments	$ 10,240	$ 14,918

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Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012
Components of comprehensive income (loss)
Net Loss	$ (61,969)	$ (74,530)	[1]
Components of comprehensive income (loss):
Translation adjustment	(1,343)	5,998
Net unrealized gain (loss) on derivatives	2,835	(5,750)
Income taxes	(533)	1,080
Net change in accumulated other comprehensive income (loss)	959	1,328
Comprehensive loss	(61,010)	(73,202)
Comprehensive loss attributable to noncontrolling interest	7,273	0
Comprehensive loss attributable to stockholders	$ (53,737)	$ (73,202)

[1] As adjusted to conform to the current period presentation for solar power systems leased and to be leased (see Note 1)

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Other Intangible Assets

3 Months Ended

Mar. 31, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets Disclosure [Text Block]

OTHER INTANGIBLE ASSETS

The following tables present details of the Company's acquired other intangible assets:

(In thousands)	Gross		Accumulated Amortization			Net
As of March 31, 2013
Patents, trade names and purchased technology	$	49,892	$	(49,892	)	$	—
Purchased in-process research and development	1,000		(403		)	597
Customer relationships and other	28,360		(28,360		)	—
	$	79,252	$	(78,655	)	$	597
As of December 30, 2012
Patents, trade names and purchased technology	$	49,892	$	(49,892	)	$	—
Purchased in-process research and development	1,000		(361		)	639
Customer relationships and other	28,426		(28,321		)	105
	$	79,318	$	(78,574	)	$	744

All of the Company's acquired other intangible assets are subject to amortization. Aggregate amortization expense for other intangible assets totaled $0.1 million and $2.8 million in the three months ended March 31, 2013 and April 1, 2012, respectively.

The Company reviews intangible assets for impairment whenever events or changes in circumstances indicate that the carrying value of such assets may not be recoverable.

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Subsequent Events Subsequent Events (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Apr. 01, 2012		Jun. 30, 2013 Credit Agricole Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Repayments of Bank Debt	$ 180,501	$ 100,592	[1]	$ 100,000

[1] As adjusted to conform to the current period presentation for solar power systems leased and to be leased (see Note 1)

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Restructuring (Tables)

3 Months Ended

Mar. 31, 2013

Restructuring and Related Activities [Abstract]

Schedule of Restructuring and Related Costs [Table Text Block]

The following table summarizes the restructuring charges recognized in the Company's Condensed Consolidated Statements of Operations:

	Three Months Ended					Cumulative To Date
	March 31, 2013			April 1, 2012
October 2012 Plan:
Severance and benefits	$	(1,083	)	$	—	$	27,970
Lease and related termination costs	70			—		784
Other costs	435			—		895
	(578		)	—		29,649
Legacy Restructuring Plans:
Non-cash impairment charges	—			—		60,153
Severance and benefits	—			944		19,836
Lease and related termination costs	217			1,770		4,423
Other costs	24			332		7,828
	241			3,046		92,240
Total restructuring charges	$	(337	)	$	3,046	$	121,889

Schedule of Restructuring Reserve by Type of Cost [Table Text Block]

The following table summarizes the restructuring reserve activity during the three months ended March 31, 2013:

	Three Months Ended
(In thousands)	December 30, 2012		Charges (Benefits)			Payments			March 31, 2013
October 2012 Plan:
Severance and benefits	$	24,439	$	(1,083	)	$	(5,606	)	$	17,750
Lease and related termination costs	714		70			(135		)	649
Other costs (1)	358		435			(482		)	311
Legacy Restructuring Plans:
Severance and benefits	60		—			(41		)	19
Lease and related termination costs	2,436		217			(510		)	2,143
Other costs (1)	1,470		24			(643		)	851
Total restructuring liabilities	$	29,477	$	(337	)	$	(7,417	)	$	21,723

(1) Other costs primarily represent associated legal services and costs associated with the decommissioning of Fab 1 assets.

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Balance Sheet Components (Details) (USD $)	3 Months Ended
	Mar. 31, 2013		Apr. 01, 2012		Dec. 30, 2012		Jan. 01, 2012
Capital Leases, Lessor Balance Sheet, Net Investment in Direct Financing and Sales Type Leases, Current	$ 4,500,000				$ 4,500,000
Accounts receivable, net:
Accounts receivable, gross	338,147,000	[1]			429,977,000	[1]
Accounts receivable, net	303,009,000				398,150,000
Inventories:
Raw materials	88,179,000				89,331,000
Work-in-process	55,668,000				50,627,000
Finished goods	137,520,000				151,428,000
Inventories, net	281,367,000				291,386,000
Prepaid expenses and other current assets:
VAT receivables, current portion	102,592,000				97,041,000
Foreign currency derivatives	7,652,000				1,275,000
Deferred project costs	135,695,000				305,980,000
Deferred costs for solar power systems to be leased, current	24,148,000				31,419,000
Other current assets	58,379,000				47,468,000
Other receivables	63,795,000	[2]			104,640,000	[2]
Other prepaid expenses	40,076,000				25,230,000
Prepaid expenses and other current assets	432,337,000	[3]			613,053,000	[3]
Project assets - plant and land:
Project assets - plant	80,645,000				61,862,000
Project assets - land	18,148,000				21,645,000
Project assets - plant and land, net	98,793,000				83,507,000
Project assets - plants and land, current portion	90,429,000				75,911,000
Project assets - plants and land, net of current portion	8,364,000				7,596,000
Property, plant and equipment, net:
Property, Plant and Equipment, Gross	1,207,099,000				1,155,429,000
Less: accumulated depreciation	(400,956,000)	[4]			(380,520,000)	[4]
Property, plant and equipment, net	806,143,000	[5]			774,909,000	[5]
Depreciation expense	23,620,000		29,071,000	[6]
Interest expense:
Interest cost incurred	(27,544,000)		(19,631,000)
Cash interest cost capitalized - property, plant and equipment	228,000		288,000
Non-cash interest cost capitalized - property, plant and equipment	57,000		133,000
Cash interest cost capitalized - project assets - plant and land	123,000		278,000
Non-cash interest cost capitalized - project assets - plant and land	102,000		231,000
Interest expense	(27,034,000)		(18,701,000)
Other long-term assets:
Equity Method Investments	111,184,000				111,516,000
Bond hedge derivative	13,946,000				2,327,000
Investments in non-public companies	10,240,000				14,918,000
Capital Leases, Lessor Balance Sheet, Net Investment in Direct Financing and Sales Type Leases, Current	93,540,000				67,742,000
Long-term debt issuance costs	29,870,000				38,185,000
Other	43,109,000				41,375,000
Other long-term assets	301,889,000	[3]			276,063,000	[3]
Accrued liabilities:
VAT payables	6,447,000				2,049,000
Foreign currency derivatives	6,346,000				4,891,000
Short-term warranty reserves	9,254,000				9,054,000
Interest payable	8,926,000				9,672,000
Deferred revenue	37,197,000				32,507,000
Employee compensation and employee benefits	42,491,000				40,750,000
Restructuring Reserve	21,723,000				29,477,000
Short-term residential lease financing	26,581,000				25,153,000
Short-term sale-leaseback financing	6,423,000				0
Other	116,299,000				93,819,000
Accrued liabilities, current	281,687,000				247,372,000
Other long-term liabilities:
Embedded conversion option derivatives	13,946,000				2,327,000
Long-term warranty reserves	110,295,000				107,803,000
Deferred revenue	147,665,000				128,936,000
Unrecognized tax benefits	35,551,000				35,022,000
Long-term residential lease financing	17,364,000				11,411,000
Long-term sale-leaseback financing	27,427,000				0
Other	59,109,000				50,120,000
Other long-term liabilities	411,357,000				335,619,000
Accumulated other comprehensive income (loss):
Cumulative translation adjustment	(3,662,000)				(2,319,000)
Net unrealized gain on derivatives	2,592,000		4,723,000		(243,000)		10,473,000
Deferred taxes	(492,000)				41,000
Accumulated other comprehensive income (loss)	(1,562,000)				(2,521,000)
Residential lease financing	43,900,000				36,600,000
Equipment [Member]
Property, plant and equipment, net:
Collateralized equipment	19,100,000				16,500,000
Leasehold Improvements [Member]
Property, plant and equipment, net:
Property, Plant and Equipment, Gross	226,987,000				221,378,000
Machinery and Equipment [Member]
Property, plant and equipment, net:
Property, Plant and Equipment, Gross	545,970,000	[7]			531,289,000	[7]
Computer Equipment [Member]
Property, plant and equipment, net:
Property, Plant and Equipment, Gross	75,557,000				75,438,000
Other Energy Equipment [Member]
Property, plant and equipment, net:
Property, Plant and Equipment, Gross	34,621,000	[8]			12,501,000	[8]
Solar power systems leased [Member]
Property, plant and equipment, net:
Property, Plant and Equipment, Gross	212,572,000				163,003,000
Collateralized equipment	327,100,000				280,800,000
Furniture and Fixtures [Member]
Property, plant and equipment, net:
Property, Plant and Equipment, Gross	8,274,000				8,178,000
Solar power systems to be leased [Member]
Property, plant and equipment, net:
Property, Plant and Equipment, Gross	65,290,000				89,423,000
Construction in Progress [Member]
Property, plant and equipment, net:
Property, Plant and Equipment, Gross	17,719,000				34,110,000
Land and Building [Member]
Property, plant and equipment, net:
Property, Plant and Equipment, Gross	20,109,000				20,109,000
Allowance for Doubtful Accounts, Current [Member]
Accounts receivable, net:
Valuation Allowances and Reserves, Balance	(31,009,000)				(26,773,000)
Allowance for Sales Returns [Member]
Accounts receivable, net:
Valuation Allowances and Reserves, Balance	(4,129,000)				(5,054,000)
Philippines
Property, plant and equipment, net:
Property, plant and equipment, net	359,171,000	[5]			367,708,000	[5]
United States
Property, plant and equipment, net:
Property, plant and equipment, net	385,687,000	[5]			343,710,000	[5]
Mexico
Property, plant and equipment, net:
Property, plant and equipment, net	32,158,000	[5]			32,409,000	[5]
Europe
Property, plant and equipment, net:
Property, plant and equipment, net	28,411,000	[5]			29,292,000	[5]
Other
Property, plant and equipment, net:
Property, plant and equipment, net	716,000	[5]			1,790,000	[5]
IFC Mortgage Loan [Member] | Mortgages [Member]
Property, plant and equipment, net:
Collateralized equipment	$ 168,100,000				$ 152,900,000

[1] Includes short-term finance receivables associated with solar power systems leased of $4.5 million as of both March 31, 2013 and December 30, 2012, respectively.

[2] Includes tolling agreements with suppliers in which the Company provides polysilicon required for silicon ingot manufacturing and procures the manufactured silicon ingots from the suppliers (see Notes 7 and 8).

[3] The Company has related party balances in connection with transactions made with unconsolidated entities in which the Company has a direct equity investment. These related party balances are recorded within the "Prepaid expenses and other current assets," "Other long-term assets," "Accounts payable," "Customer advances, current portion," and "Customer advances, net of current portion" financial statement line items in the Condensed Consolidated Balance Sheets (see Note 4, Note 7, and Note 8).

[4] Total depreciation expense was $23.6 million and $29.1 million for the three months ended March 31, 2013 and April 1, 2012, respectively.

[5] Property, plant and equipment, net are based on the physical location of the assets.

[6] As adjusted to conform to the current period presentation for solar power systems leased and to be leased (see Note 1)

[7] The Company's mortgage loan agreement with International Finance Corporation ("IFC") is collateralized by certain manufacturing equipment with a net book value of $168.1 million and $152.9 million as of March 31, 2013 and December 30, 2012, respectively. The Company also provided security for advance payments received from a third party in the form of collateralized manufacturing equipment with a net book value of $19.1 million and $16.5 million as of March 31, 2013 and December 30, 2012, respectively.

[8] Includes $20.1 million of solar power systems associated with sale-leaseback transactions under the financing method (see Note 7).

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Stock-Based Compensation

3 Months Ended

Mar. 31, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Disclosure of Compensation Related Costs, Share-based Payments [Text Block]

STOCK-BASED COMPENSATION

The following table summarizes the consolidated stock-based compensation expense by line item in the Condensed Consolidated Statements of Operations:

	Three Months Ended
(In thousands)	March 31, 2013		April 1, 2012
Cost of Americas revenue	$	778	$	1,129
Cost of EMEA revenue	441		965
Cost of APAC revenue	491		265
Research and development	1,122		1,780
Sales, general and administrative	5,684		8,402
Total stock-based compensation expense	$	8,516	$	12,541

The following table summarizes the consolidated stock-based compensation expense by type of awards:

	Three Months Ended
(In thousands)	March 31, 2013			April 1, 2012
Employee stock options	$	—		$	326
Restricted stock units	8,811			13,574
Change in stock-based compensation capitalized in inventory	(295		)	(1,359		)
Total stock-based compensation expense	$	8,516		$	12,541