Description of Business and Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The condensed consolidated financial statements are unaudited and have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) for interim financial information. They should be read in conjunction with the financial statements and related notes to the financial statements of Solar Power, Inc. for the years ended December 31, 2014 and 2013 appearing in Solar Power, Inc.’s Form 10-K filed with the Securities and Exchange Commission (“SEC”) on March 31, 2015. The Company’s March 31, 2015 and 2014 unaudited interim condensed consolidated financial statements on Form 10-Q have been prepared pursuant to the rules and regulations of the SEC for smaller reporting companies and include the accounts of Solar Power, Inc. and its subsidiaries. Certain information and note disclosures normally included in the annual financial statements on Form 10-K have been condensed or omitted pursuant to those rules and regulations, although the Company’s management believes the disclosures made are adequate to make the information presented not misleading. In the opinion of management, all adjustments, consisting of normal recurring adjustments and reclassifications, necessary to present fairly the Company’s consolidated financial position, results of operations and cash flows for all periods presented have been reflected herein. The Company’s financial position, operating results, cash flows and trends in these unaudited condensed consolidated financial statements are not necessarily indicative of future results that may be expected for any other interim period or for the full year. The preparation of unaudited interim condensed consolidated financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the unaudited interim consolidated financial statements as well as the reported amounts of revenues and expenses during the reporting period. Significant accounting estimates used in the preparation of the Company’s consolidated condensed financial statements include: allowance made for doubtful accounts receivable, inventory write-downs, the estimated useful lives of long-lived assets, the impairment of goodwill, long-lived assets and project assets, fair value of derivative liability, valuation allowance of deferred income tax assets, accrued warranty expenses, the grant-date fair value of share-based compensation awards and related forfeiture rates, and fair value of financial instruments. Actual results could differ from those estimates upon subsequent resolution of identified matters. The unaudited interim condensed consolidated financial statements have been prepared on a going concern basis, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business.
Recently Issued Accounting Pronouncements	In May 2014, the Financial Accounting Standards Board (“FASB”) issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606), to clarify the principles of recognizing revenue and create common revenue recognition guidance between U.S. GAAP and International Financial Reporting Standards. An entity has the option to apply the provisions of ASU 2014-09 either retrospectively to each prior reporting period presented or retrospectively with the cumulative effect of initially applying this standard recognized at the date of initial application. ASU 2014-09 is effective for fiscal years and interim periods within those years beginning after December 15, 2017, and early adoption is permitted for periods beginning after December 15, 2016. The Company has not determined which transition method it will adopt, and is currently evaluating the impact of this standard on its consolidated financial statements. In August 2014, the FASB issued ASU No. 2014-15, Presentation of Financial Statements – Going Concern (Subtopic 205- 40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern, which requires management to evaluate, at each annual and interim reporting period, whether there are conditions or events that raise substantial doubt about the entity’s ability to continue as a going concern within one year after the date the financial statements are issued and to provide related disclosures. ASU 2014-15 is effective for the Company for the fiscal year ending December 31, 2016 and for interim periods thereafter. The Company is currently evaluating the impact of this standard on its consolidated financial statements. In January 2015, the FASB issued ASU No. 2015-01, Income Statement —Extraordinary and Unusual Items (Subtopic 225- 20), which eliminates the concept of reporting for extraordinary items. ASU 2015-01 is effective for the Company for fiscal years, and interim periods within those fiscal years, beginning on January 1, 2016. The Company is currently evaluating the impact of this standard on the Company’s consolidated financial statements. On February 18, 2015, the FASB issued ASU No. 2015-02, Consolidation, which reduces the number of consolidation models and simplifies the current standard. Entities may no longer need to consolidate a legal entity in certain circumstances based solely on its fee arrangements when certain criteria are met. ASU 2015-02 reduces the frequency of the application of related-party guidance when determining a controlling financial interest in a variable interest entity. ASU 2015-02 is effective for the Company’s fiscal year ending December 31, 2016. The Company is currently evaluating the impact of this standard on the Company’s consolidated financial statements. In April 2015, the FASB issued Accounting Standards Update (“ASU”) No. 2015-03, Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs. ASU 2015-03 requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability. ASU 2015-03 is effective for the Company on a retrospective basis on January 1, 2016. Early adoption is permitted, but only for debt issuance costs that have not been reported in financial statements previously issued or available for issuance. The Company is currently evaluating the impact of this standard on the Company’s consolidated financial statements.