UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

_______________________________________________________________________________

FORM 10-Q

_______________________________________________________________________________

(Mark One)

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

For the quarterly period ended June 30, 2020

OR

☐ 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: 001-38995

_______________________________________________________________________________

Sunnova Energy International Inc.

(Exact name of registrant as specified in its charter)

_______________________________________________________________________________

Delaware	30-1192746
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification Number)

20 East Greenway Plaza, Suite 540

Houston, Texas 77046

(Address, including zip code, of principal executive offices)

(281) 985-9904

(Registrant's telephone number, including area code)

20 East Greenway Plaza, Suite 475

Houston, Texas 77046

(Former address)

_______________________________________________________________________________

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class	Trading Symbol(s)	Name of Each Exchange on Which Registered
Common Stock, $0.0001 par value per share	NOVA	New York Stock Exchange

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 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 ☒ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted 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 such files). Yes ☒ No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.

Large accelerated filer	☐	Accelerated filer	☐
Non-accelerated filer	☒	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

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

The registrant had 85,028,799 shares of common stock outstanding as of July 27, 2020.

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This report contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the "Securities Act"), and Section 21E of the Securities Exchange Act of 1934, as amended (the "Exchange Act"). Forward-looking statements generally relate to future events or Sunnova's future financial or operating performance. Actual outcomes and results may differ materially from what is expressed or forecast in such forward-looking statements. In some cases, you can identify these statements because they contain words such as "may," "will," "likely," "should," "expect," "anticipate," "could," "contemplate," "target," "future," "plan," "believe," "intend," "goal," "seek," "estimate," "project," "target," "predict," "potential," "continue" or the negative of these words or other similar terms or expressions that concern our expectations, strategy, plans or intentions. Forward-looking statements contained in this report include, but are not limited to, statements about:

•the effects of the coronavirus disease pandemic on our business and operations, results of operations and financial position;

•federal, state and local statutes, regulations and policies;

•the price of centralized utility-generated electricity and electricity from other sources and technologies;

•technical and capacity limitations imposed by operators of the power grid;

•the availability of tax rebates, credits and incentives, including changes to the rates of, or expiration of, federal tax credits and the availability of related safe harbors;

•our need and ability to raise capital to finance the installation and acquisition of distributed residential solar energy systems, refinance existing debt or otherwise meet our liquidity needs;

•our expectations concerning relationships with third parties, including the attraction, retention, performance and continued existence of our dealers;

•our ability to manage our supply chains and distribution channels and the impact of natural disasters and other events beyond our control, such as the coronavirus disease pandemic;

•our ability to retain or upgrade current customers, further penetrate existing markets or expand into new markets;

•our investment in our platform and new product offerings and the demand for and expected benefits of our platform and product offerings;

•the ability of our solar energy systems, energy storage systems or other product offerings to operate or deliver energy for any reason, including if interconnection or transmission facilities on which we rely become unavailable;

•our ability to maintain our brand and protect our intellectual property and customer data;

•our ability to manage the cost of solar energy systems, energy storage systems and our service offerings;

•the willingness of and ability of our dealers and suppliers to fulfill their respective warranty and other contractual obligations;

•our expectations regarding litigation and administrative proceedings; and

•our ability to renew or replace expiring, canceled or terminated solar service agreements at favorable rates or on a long-term basis.

Our actual results and timing of these events may differ materially from those anticipated in these forward-looking statements as a result of many factors, including but not limited to those discussed under "Risk Factors" and elsewhere in this Quarterly Report on Form 10-Q. Moreover, we operate in a very competitive and rapidly changing environment and new risks emerge from time to time. It is not possible for our management to predict all risks, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements we may make. In light of these risks, uncertainties and assumptions, the forward-looking events and circumstances discussed in this Quarterly Report on Form 10-Q may not occur and actual results could differ materially and adversely from those anticipated or implied in the forward-looking statements. We undertake no obligation to update publicly any forward-looking statements for any reason after the date of this Quarterly Report on Form 10-Q to conform these statements to actual results or to changes in our expectations, except as required by law.

2

TABLE OF CONTENTS

		Page
PART I - FINANCIAL INFORMATION
Item 1.	Unaudited Condensed Consolidated Balance Sheets	4
	Unaudited Condensed Consolidated Statements of Operations	5
	Unaudited Condensed Consolidated Statements of Cash Flows	6
	Unaudited Condensed Consolidated Statements of Redeemable Noncontrolling Interests and Stockholders' Equity	8
	Notes to Unaudited Condensed Consolidated Financial Statements	10
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	32
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	54
Item 4.	Controls and Procedures	54
PART II - OTHER INFORMATION
Item 1.	Legal Proceedings	56
Item 1A.	Risk Factors	56
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	57
Item 3.	Defaults Upon Senior Securities	58
Item 4.	Mine Safety Disclosures	58
Item 5.	Other Information	58
Item 6.	Exhibits	59
	Signatures	60

3

PART I - FINANCIAL INFORMATION

Item 1. Financial Statements.

SUNNOVA ENERGY INTERNATIONAL INC.

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS

(in thousands, except share amounts and share par values)

	As of   June 30, 2020		As of   December 31, 2019
Assets
Current assets:
Cash	$	102,279	$	83,485
Accounts receivable—trade, net	12,504		10,672
Accounts receivable—other	6,094		6,147
Other current assets, net of allowance of $542 and $112 as of June 30, 2020 and December 31, 2019, respectively	165,928		174,016
Total current assets	286,805		274,320
Property and equipment, net	2,006,115		1,745,060
Customer notes receivable, net of allowance of $13,001 and $979 as of June 30, 2020 and December 31, 2019, respectively	378,976		297,975
Other assets	195,699		169,712
Total assets (1)	$	2,867,595	$	2,487,067
Liabilities, Redeemable Noncontrolling Interests and Stockholders' Equity
Current liabilities:
Accounts payable	$	27,590	$	36,190
Accrued expenses	21,496		39,544
Current portion of long-term debt	114,141		97,464
Other current liabilities	26,534		21,804
Total current liabilities	189,761		195,002
Long-term debt, net	1,628,672		1,346,419
Other long-term liabilities	149,169		127,406
Total liabilities (1)	1,967,602		1,668,827
Commitments and contingencies (Note 14)
Redeemable noncontrolling interests	238,305		172,305
Stockholders' equity:
Common stock, 84,056,032 and 83,980,885 shares issued as of June 30, 2020 and December 31, 2019, respectively, at $0.0001 par value	8		8
Additional paid-in capital—common stock	1,088,223		1,007,751
Accumulated deficit	(426,543)		(361,824)
Total stockholders' equity	661,688		645,935
Total liabilities, redeemable noncontrolling interests and stockholders' equity	$	2,867,595	$	2,487,067

(1) The consolidated assets as of June 30, 2020 and December 31, 2019 include $1,113,760 and $790,211, respectively, of assets of variable interest entities ("VIEs") that can only be used to settle obligations of the VIEs. These assets include cash of $10,415 and $7,347 as of June 30, 2020 and December 31, 2019, respectively; accounts receivable—trade, net of $2,601 and $1,460 as of June 30, 2020 and December 31, 2019, respectively; accounts receivable—other of $214 and $4 as of June 30, 2020 and December 31, 2019, respectively; other current assets of $96,675 and $47,606 as of June 30, 2020 and December 31, 2019, respectively; property and equipment, net of $994,155 and $726,415 as of June 30, 2020 and December 31, 2019, respectively; and other assets of $9,700 and $7,379 as of June 30, 2020 and December 31, 2019, respectively. The consolidated liabilities as of June 30, 2020 and December 31, 2019 include $17,963 and $13,440, respectively, of liabilities of VIEs whose creditors have no recourse to Sunnova Energy International Inc. These liabilities include accounts payable of $2,470 and $1,926 as of June 30, 2020 and December 31, 2019, respectively; accrued expenses of $96 and $35 as of June 30, 2020 and December 31, 2019, respectively; other current liabilities of $485 and $612 as of June 30, 2020 and December 31, 2019, respectively; and other long-term liabilities of $14,912 and $10,867 as of June 30, 2020 and December 31, 2019, respectively.

See accompanying notes to unaudited condensed consolidated financial statements.

4

SUNNOVA ENERGY INTERNATIONAL INC.

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except share and per share amounts)

	Three Months Ended   June 30,				Six Months Ended   June 30,
	2020		2019		2020		2019
Revenue	$	42,790	$	34,612	$	72,619	$	61,327
Operating expense:
Cost of revenue—depreciation	14,021		10,225		27,007		19,878
Cost of revenue—other	2,869		1,076		3,912		1,728
Operations and maintenance	2,926		2,289		5,145		4,543
General and administrative	28,133		23,794		56,026		42,475
Other operating income	(16)		(62)		(22)		(80)
Total operating expense, net	47,933		37,322		92,068		68,544
Operating loss	(5,143)		(2,710)		(19,449)		(7,217)
Interest expense, net	30,532		37,310		97,850		68,971
Interest expense, net—affiliates	—		1,575		—		3,397
Interest income	(6,680)		(2,967)		(11,300)		(5,461)
Loss on extinguishment of long-term debt, net—affiliates	—		10,645		—		10,645
Other (income) expense	(266)		534		(266)		534
Loss before income tax	(28,729)		(49,807)		(105,733)		(85,303)
Income tax	—		—		—		—
Net loss	(28,729)		(49,807)		(105,733)		(85,303)
Net income (loss) attributable to redeemable noncontrolling interests	(3,471)		931		(9,400)		3,949
Net loss attributable to stockholders	(25,258)		(50,738)		(96,333)		(89,252)
Dividends earned on Series A convertible preferred stock	—		(9,760)		—		(19,271)
Dividends earned on Series C convertible preferred stock	—		(2,762)		—		(5,454)
Net loss attributable to common stockholders—basic and diluted	$	(25,258)	$	(63,260)	$	(96,333)	$	(113,977)
Net loss per share attributable to common stockholders—basic and diluted	$	(0.30)	$	(7.32)	$	(1.15)	$	(13.20)
Weighted average common shares outstanding—basic and diluted	84,033,278		8,636,598		84,017,214		8,636,065

See accompanying notes to unaudited condensed consolidated financial statements.

5

SUNNOVA ENERGY INTERNATIONAL INC.

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

	Six Months Ended   June 30,
	2020		2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$	(105,733)	$	(85,303)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	30,814		22,639
Impairment and loss on disposals, net	1,222		851
Amortization of deferred financing costs	5,409		7,770
Amortization of debt discount	7,610		1,292
Non-cash effect of equity-based compensation plans	6,044		994
Non-cash payment-in-kind interest on loan	679		—
Non-cash payment-in-kind interest on loan—affiliates	—		2,201
Unrealized loss on derivatives	4,543		17,449
Unrealized (gain) loss on fair value option instruments	(256)		534
Loss on extinguishment of long-term debt, net—affiliates	—		10,645
Other non-cash items	7,302		3,470
Changes in components of operating assets and liabilities:
Accounts receivable	(1,941)		(6,597)
Other current assets	(81)		(9,357)
Other assets	(21,504)		(26,063)
Accounts payable	(706)		2,279
Accrued expenses	(16,033)		(1,995)
Other current liabilities	4,631		5,362
Other long-term liabilities	(4,928)		(1,865)
Net cash used in operating activities	(82,928)		(55,694)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property and equipment	(274,333)		(164,796)
Payments for investments and customer notes receivable	(99,016)		(62,360)
Proceeds from customer notes receivable	15,090		9,336
State utility rebates and tax credits	172		227
Other, net	490		183
Net cash used in investing activities	(357,597)		(217,410)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from long-term debt	936,938		526,045
Payments of long-term debt	(629,268)		(287,363)
Proceeds of long-term debt from affiliates	—		15,000
Payments on notes payable	(2,451)		(248)
Payments of deferred financing costs	(16,819)		(7,268)
Payments of debt discounts	(3,132)		(1,084)
Proceeds from issuance of common stock, net	(129)		(478)
Proceeds from equity component of debt instrument, net	73,657		—
Proceeds from issuance of convertible preferred stock, net	—		(2,509)
Contributions from redeemable noncontrolling interests	120,653		50,237
Distributions to redeemable noncontrolling interests	(2,600)		(5,143)
Payments of costs related to redeemable noncontrolling interests	(2,187)		(1,622)
Other, net	(1)		(13)
Net cash provided by financing activities	474,661		285,554
Net increase in cash and restricted cash	34,136		12,450
Cash and restricted cash at beginning of period	150,291		87,046
Cash and restricted cash at end of period	184,427		99,496
Restricted cash included in other current assets	(18,644)		(482)
Restricted cash included in other assets	(63,504)		(40,238)
Cash at end of period	$	102,279	$	58,776

6

	Six Months Ended   June 30,
	2020		2019
Non-cash investing and financing activities:
Change in accounts payable and accrued expenses related to purchases of property and equipment	$	(318)	$	28,343
Change in accounts payable and accrued expenses related to payments for investments and customer notes receivable	$	(7,738)	$	(4,369)
Change in accounts payable and accrued expenses related to financing costs	$	(768)	$	3,854
Transfers of inventory to property and equipment, net and customer notes receivable	$	20,347	$	1,255
Supplemental cash flow information:
Cash paid for interest	$	38,476	$	25,395
Cash paid for income taxes	$	—	$	—

See accompanying notes to unaudited condensed consolidated financial statements.

7

SUNNOVA ENERGY INTERNATIONAL INC.

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF REDEEMABLE NONCONTROLLING INTERESTS AND STOCKHOLDERS' EQUITY

(in thousands, except share amounts)

	Redeemable Noncontrolling Interests		Series A Convertible Preferred Stock			Series C Convertible Preferred Stock			Series A Common Stock			Series B Common Stock			Additional Paid-in Capital - Convertible Preferred Stock		Additional Paid-in Capital - Common Stock		Accumulated Deficit		Total Stockholders' Equity
			Shares	Amount		Shares	Amount		Shares	Amount		Shares	Amount
December 31, 2018	$	85,680	44,942,594	$	449	13,006,780	$	130	8,612,728	$	86	21,727	$	—	$	701,326	$	85,439	$	(286,312)	$	501,118
Net income (loss)	3,018		—	—		—	—		—	—		—	—		—		—		(38,514)		(38,514)
Issuance of common stock	—		—	—		—	—		—	—		2,143	—		—		4		—		4
Repurchase of convertible preferred stock	—		(13,484)	—		—	—		—	—		—	—		(183)		—		(8)		(191)
Contributions from redeemable noncontrolling interests	18,030		—	—		—	—		—	—		—	—		—		—		—		—
Distributions to redeemable noncontrolling interests	(3,652)		—	—		—	—		—	—		—	—		—		—		—		—
Costs related to redeemable noncontrolling interests	(1,562)		—	—		—	—		—	—		—	—		—		—		—		—
Equity in subsidiaries attributable to parent	(10,125)		—	—		—	—		—	—		—	—		—		—		10,125		10,125
Equity-based compensation expense	—		—	—		—	—		—	—		—	—		—		281		—		281
Other, net	2,627		—	—		—	—		—	—		—	—		493		—		(2)		491
March 31, 2019	94,016		44,929,110	449		13,006,780	130		8,612,728	86		23,870	—		701,636		85,724		(314,711)		473,314
Net income (loss)	931		—	—		—	—		—	—		—	—		—		—		(50,738)		(50,738)
Contributions from redeemable noncontrolling interests	32,207		—	—		—	—		—	—		—	—		—		—		—		—
Distributions to redeemable noncontrolling interests	(1,491)		—	—		—	—		—	—		—	—		—		—		—		—
Costs related to redeemable noncontrolling interests	(419)		—	—		—	—		—	—		—	—		—		—		—		—
Equity in subsidiaries attributable to parent	(18,297)		—	—		—	—		—	—		—	—		—		—		18,297		18,297
Equity-based compensation expense	—		—	—		—	—		—	—		—	—		—		713		—		713
Other, net	600		—	—		—	—		—	—		—	—		(1)		—		—		(1)
June 30, 2019	$	107,547	44,929,110	$	449	13,006,780	$	130	8,612,728	$	86	23,870	$	—	$	701,635	$	86,437	$	(347,152)	$	441,585

8

	Redeemable Noncontrolling Interests		Common Stock			Additional Paid-in Capital - Common Stock		Accumulated Deficit		Total Stockholders' Equity
			Shares	Amount
December 31, 2019	$	172,305	83,980,885	$	8	$	1,007,751	$	(361,824)	$	645,935
Cumulative-effect adjustment	—		—	—		—		(9,908)		(9,908)
Net loss	(5,929)		—	—		—		(71,075)		(71,075)
Issuance of common stock, net	—		45,405	—		214		—		214
Contributions from redeemable noncontrolling interests	102,342		—	—		—		—		—
Distributions to redeemable noncontrolling interests	(1,373)		—	—		—		—		—
Costs related to redeemable noncontrolling interests	(707)		—	—		—		—		—
Equity in subsidiaries attributable to parent	(24,164)		—	—		—		24,164		24,164
Equity-based compensation expense	—		—	—		2,690		—		2,690
Other, net	(47)		—	—		—		—		—
March 31, 2020	242,427		84,026,290	$	8	1,010,655		(418,643)		592,020
Net loss	(3,471)		—	—		—		(25,258)		(25,258)
Issuance of common stock, net	—		29,742	—		558		—		558
Equity component of debt instrument, net	—		—	—		73,657		—		73,657
Contributions from redeemable noncontrolling interests	18,311		—	—		—		—		—
Distributions to redeemable noncontrolling interests	(1,227)		—	—		—		—		—
Costs related to redeemable noncontrolling interests	(604)		—	—		—		—		—
Equity in subsidiaries attributable to parent	(17,359)		—	—		—		17,359		17,359
Equity-based compensation expense	—		—	—		3,354		—		3,354
Other, net	228		—	—		(1)		(1)		(2)
June 30, 2020	$	238,305	84,056,032	$	8	$	1,088,223	$	(426,543)	$	661,688

See accompanying notes to unaudited condensed consolidated financial statements.

9

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(1) Description of Business and Basis of Presentation

We are a leading residential solar and energy storage service provider, serving more than 91,000 customers in more than 20 United States ("U.S.") states and territories. Sunnova Energy Corporation was incorporated in Delaware on October 22, 2012 and formed Sunnova Energy International Inc. ("SEI") as a Delaware corporation on April 1, 2019. We completed our initial public offering on July 29, 2019 (our "IPO"); and in connection with our IPO, all of Sunnova Energy Corporation's ownership interests were contributed to SEI. Unless the context otherwise requires, references in this report to "Sunnova," the "Company," "we," "our," "us," or like terms, refer to SEI and its subsidiaries.

We have a differentiated residential solar dealer model in which we partner with local dealers who originate, design and install our customers' solar energy systems and energy storage systems on our behalf. Our focus on our dealer model enables us to leverage our dealers' specialized knowledge, connections and experience in local markets to drive customer origination while providing our dealers with access to high quality products at competitive prices as well as technical oversight and expertise. We believe this structure provides operational flexibility, reduced exposure to labor shortages and lower fixed costs relative to our peers, furthering our competitive advantage.

We provide our services through long-term residential solar service agreements with a diversified pool of high credit quality customers. Our solar service agreements typically are structured as either a legal-form lease (a "lease") of a solar energy system to the customer, the sale of the solar energy system's output to the customer under a power purchase agreement ("PPA") or the purchase of a solar energy system with financing provided by us (a "loan"). The initial term of our solar service agreements is typically either 10 or 25 years, during which time we provide or arrange for ongoing services to customers, including monitoring, maintenance and warranty services. Our lease and PPA agreements typically include an opportunity for customers to renew for up to an additional 10 years, via two five-year renewal options. Customer payments and rates can be fixed for the duration of the solar service agreement or escalated at a pre-determined percentage annually. We also receive tax benefits and other incentives from leases and PPAs, a portion of which we finance through tax equity, non-recourse debt structures and hedging arrangements in order to fund our upfront costs, overhead and growth investments.

Basis of Presentation

The accompanying interim unaudited condensed consolidated financial statements ("interim financial statements") include our consolidated balance sheets, statements of operations, statements of redeemable noncontrolling interests and stockholders' equity and statements of cash flows and have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") from records maintained by us. We have condensed or omitted certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP pursuant to the applicable rules and regulations of the Securities and Exchange Commission ("SEC") regarding interim financial reporting. As such, these interim financial statements should be read in conjunction with our 2019 annual audited consolidated financial statements and accompanying notes included in our Annual Report on Form 10-K filed with the SEC on February 25, 2020. Our interim financial statements reflect all normal recurring adjustments necessary, in our opinion, to state fairly our financial position and results of operations for the reported periods. Amounts reported for interim periods may not be indicative of a full year period because of seasonal fluctuations in demand for power, timing of maintenance and other expenditures, changes in interest expense and other factors.

Our interim financial statements reflect our accounts and operations and those of our subsidiaries in which we have a controlling financial interest. In accordance with the provisions of the Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") 810, Consolidation, we consolidate any VIE of which we are the primary beneficiary. We form VIEs with our investors in the ordinary course of business to facilitate the funding and monetization of certain attributes associated with our solar energy systems. The typical condition for a controlling financial interest ownership is holding a majority of the voting interests of an entity; however, a controlling financial interest may also exist in entities, such as VIEs, through arrangements that do not involve controlling voting interests. ASC 810 requires a variable interest holder to consolidate a VIE if that party has (a) the power to direct the activities of the VIE that most significantly impact the VIE's economic performance and (b) the obligation to absorb losses or the right to receive benefits from the VIE that could potentially be significant to the VIE. We do not consolidate a VIE in which we have a majority ownership interest when we are not considered the primary beneficiary. We have considered the provisions within the contractual arrangements that grant us power to manage and make decisions that affect the operation of our VIEs, including determining the solar energy systems contributed to the VIEs, and the installation, operation and maintenance of the solar energy systems. We consider the rights granted to the other investors under the contractual arrangements to be more protective in nature rather than participating rights. As such, we have determined we are the primary beneficiary of our VIEs and evaluate our relationships with our VIEs on an ongoing basis

10

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

to ensure we continue to be the primary beneficiary. We have eliminated all intercompany accounts and transactions in consolidation.

Adoption of ASU

In June 2016, the FASB issued Accounting Standards Update ("ASU") No. 2016-13, Financial Instruments—Credit Losses, which requires entities to use a forward-looking expected loss approach, referred to as the current expected credit loss ("CECL") methodology, in accordance with ASC 326, Financial Instruments—Credit Losses, instead of the incurred loss approach previously in effect when estimating the allowance for credit losses. Under CECL, financial assets measured at amortized cost are presented at the net amount expected to be collected by using an estimate of credit losses for the remaining estimated life of the financial asset based on historical experience, current conditions and reasonable and supportable forecasts. This ASU is effective for annual and interim reporting periods in 2020. In 2018 and 2019, the FASB issued the following ASUs related to ASU 2016-13: ASU No. 2018-19, Codification Improvements to Topic 326, Financial Instruments—Credit Losses, ASU 2019-05, Financial Instruments—Credit Losses: Targeted Transition Relief and ASU 2019-11, Codification Improvements to Topic 326, Financial Instruments—Credit Losses. The supplemental ASUs must be adopted simultaneously with ASU 2016-13. We adopted this ASU in January 2020 using the modified retrospective approach for our trade accounts receivable, customer notes receivable and long-term receivable for leases, which resulted in a cumulative-effect adjustment to stockholders' equity of approximately $9.9 million. Results for reporting periods prior to 2020 continue to be presented in accordance with previously applicable GAAP while results for subsequent reporting periods are presented under ASC 326. See Note 2, Significant Accounting Policies, and Note 6, Customer Notes Receivable. The following table presents the impact of the adoption of ASU No. 2016-13 on the unaudited condensed consolidated balance sheet:

	As of January 1, 2020
	As Reported Under ASC 326		Impact of ASC 326 Adoption		Pre-ASC 326 Adoption
	(in thousands)
Accounts receivable—trade, net	$	10,912	$	240	$	10,672
Other current assets	173,565		(451)		174,016
Customer notes receivable	289,191		(8,784)		297,975
Other assets	168,799		(913)		169,712
Accumulated deficit	(371,732)		(9,908)		(361,824)

Reclassifications

Certain prior period amounts have been reclassified to conform to the current period presentation. These reclassifications did not have a significant impact on our interim financial statements.

Coronavirus Disease ("COVID-19") Pandemic

The ongoing COVID-19 pandemic has resulted in widespread adverse impacts on the global economy. Our first priority in our response to this pandemic has been the health and safety of our employees, customers and dealers. To that end, we quickly implemented preventative measures to minimize unnecessary risk of exposure. We have experienced some resulting disruptions to our business operations as the COVID-19 pandemic has continued to spread through the states and U.S. territories in which we operate.

To adjust to federal social distancing guidelines, stay-at-home orders and similar government measures, our dealers have expanded the use of digital tools and origination channels and created new methods that offset restrictions on their ability to meet with potential new customers in person. The service and installation of solar energy systems has continued during the COVID-19 pandemic. This reflects residential solar services' designation as an essential service in all of our service territories. In order to adhere to all applicable state and federal health and safety guidelines, we and our dealers have moved to a contact-free process for installers and service technicians. In addition, an increasing number of authorities having jurisdiction and local utilities are accepting electronic submissions for permits and inspections are being performed in many locations through video calls and other electronic means. Throughout the COVID-19 pandemic, we have seen minimal impact to our supply chain as our technicians and dealers have largely been able to successfully procure the equipment needed to service and install solar energy systems.

We cannot predict the full impact the COVID-19 pandemic or the significant disruption and volatility currently being experienced in the capital markets will have on our business, cash flows, liquidity, financial condition and results of operations

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NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

at this time due to numerous uncertainties. The ultimate impact will depend on future developments, including, among other things, the ultimate geographic spread and duration of the COVID-19 virus, the depth and duration of the economic downturn and other economic effects of the COVID-19 pandemic, the consequences of governmental and other measures designed to prevent the spread of the COVID-19 virus, actions taken by governmental authorities, customers, suppliers, dealers and other third parties, our ability and the ability of our customers, potential customers and dealers to adapt to operating in a changed environment and the timing and extent to which normal economic and operating conditions resume.

(2) Significant Accounting Policies

Included below are updates to significant accounting policies disclosed in our 2019 annual audited consolidated financial statements.

Use of Estimates

The application of GAAP in the preparation of the interim financial statements requires us to make estimates and assumptions that affect the amounts reported in the interim financial statements and accompanying notes. We base our estimates on historical experience and on various other assumptions believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Actual results could differ materially from those estimates.

Accounts Receivable

Accounts Receivable—Trade.    Accounts receivable—trade primarily represents trade receivables from residential customers under PPAs and leases that are generally collected in the subsequent month. Accounts receivable—trade is recorded net of an allowance for credit losses, which is based on our assessment of the collectability of customer accounts. We review the allowance by considering factors such as historical experience, customer credit rating, contractual term, aging category and current economic conditions that may affect a customer's ability to pay to identify customers with potential disputes or collection issues. We write off accounts receivable when we deem them uncollectible. As of June 30, 2020, we have not experienced a significant increase in delinquent customer accounts and have not made any significant adjustments to our allowance for credit losses related to accounts receivable—trade as a result of the COVID-19 pandemic. The following table presents the changes in the allowance for credit losses recorded against accounts receivable—trade, net in the unaudited condensed consolidated balance sheets:

	Three Months Ended   June 30,				Six Months Ended   June 30,
	2020		2019		2020		2019
	(in thousands)
Balance at beginning of period	$	747	$	741	$	960	$	723
Impact of ASC 326 adoption	—		—		(240)		—
Provision for current expected credit losses	477		—		879		—
Bad debt expense	—		346		—		638
Write off of uncollectible accounts	(463)		(363)		(848)		(664)
Recoveries	13		22		22		49
Other, net	(1)		—		—		—
Balance at end of period	$	773	$	746	$	773	$	746

Accounts Receivable—Other.    Accounts receivable—other primarily represents receivables related to the sale of inventory and amounts owed from dealers in a net receivable position primarily as a result of customer contract cancelations or settlement agreements.

Inventory

Inventory primarily represents energy storage systems, photovoltaic modules, inverters, meters and other associated equipment purchased and held for use as original parts on new solar energy systems or replacement parts on existing solar energy systems. We record inventory in other current assets in the consolidated balance sheets at the lower of cost and net realizable value. We remove these items from inventory using the weighted-average method and (a) expense to operations and maintenance expense when installed as a replacement part for a solar energy system or (b) capitalize to property and equipment

12

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

when installed as an original part on a solar energy system. We evaluate our inventory reserves and write down the estimated value of excess and obsolete inventory based upon assumptions about future demand and market conditions. The following table presents the detail of inventory as recorded in other current assets in the unaudited condensed consolidated balance sheets:

	As of   June 30, 2020		As of   December 31, 2019
	(in thousands)
Energy storage systems and components	$	22,667	$	33,443
Modules and inverters	97,439		10,137
Meters	698		169
Total	$	120,804	$	43,749

As of June 30, 2020 and December 31, 2019, we recorded accrued expenses of $1.0 million and $15.2 million, respectively, for inventory purchases.

Fair Value of Financial Instruments

Fair value is an exit price representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. As such, fair value is a market-based measurement that should be determined based on assumptions market participants would use in pricing an asset or a liability. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. ASC 820 establishes a three-tier fair value hierarchy, which prioritizes inputs that may be used to measure fair value as follows:

•Level 1—Observable inputs that reflect unadjusted quoted market prices in active markets for identical assets or liabilities that are accessible at the measurement date.

•Level 2—Observable inputs other than Level 1 prices, such as quoted market prices for similar assets or liabilities in active markets, quoted market prices in markets that are not active or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

•Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, the level in the fair value hierarchy must be determined based on the lowest level input that is significant to the fair value measurement. An assessment of the significance of a particular input to the fair value measurement in its entirety requires judgment and consideration of factors specific to the asset or liability. Our financial instruments include accounts receivable, notes receivable, accounts payable, accrued expenses, long-term debt and interest rate swaps. The carrying values of accounts receivable, accounts payable and accrued expenses approximate the fair values due to the fact that they are short-term in nature (Level 1). We estimate the fair value of our customer notes receivable based on interest rates currently offered under the loan program with similar maturities and terms (Level 3). We estimate the fair value of our fixed-rate long-term debt based on interest rates currently offered for debt with similar maturities and terms (Level 3). We determine the fair values of the interest rate derivative transactions based on a discounted cash flow method using contractual terms of the transactions. The floating interest rate is based on observable rates consistent with the frequency of the interest cash flows (Level 2). See Note 6, Customer Notes Receivable, Note 7, Long-Term Debt and Note 8, Derivative Instruments.

Derivative Instruments

Our derivative instruments consist of interest rate swaps that are not designated as cash flow hedges or fair value hedges under accounting guidance. We use interest rate swaps to manage our net exposure to interest rate changes. We record the derivatives in other current assets, other assets, other current liabilities and other long-term liabilities, as appropriate, in the consolidated balance sheets and the changes in fair value are recorded in interest expense, net in the consolidated statements of operations. We include unrealized gains and losses on derivatives as a non-cash reconciling item in operating activities in the consolidated statements of cash flows. We include realized gains and losses on derivatives as a change in components of operating assets and liabilities in operating activities in the consolidated statements of cash flows. See Note 8, Derivative Instruments.

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NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Revenue

The following table presents the detail of revenue as recorded in the unaudited condensed consolidated statements of operations:

	Three Months Ended   June 30,				Six Months Ended   June 30,
	2020		2019		2020		2019
	(in thousands)
PPA revenue	$	19,922	$	13,954	$	32,555	$	23,566
Lease revenue	12,338		9,620		23,880		19,258
Solar renewable energy certificate revenue	8,735		9,716		13,098		16,308
Loan revenue	634		363		1,233		734
Other revenue	1,161		959		1,853		1,461
Total	$	42,790	$	34,612	$	72,619	$	61,327

We recognize revenue from contracts with customers as we satisfy our performance obligations at a transaction price reflecting an amount of consideration based upon an estimated rate of return. We express this rate of return as the solar rate per kilowatt hour ("kWh") in the customer contract. The amount of revenue we recognize does not equal customer cash payments because we satisfy performance obligations ahead of cash receipt or evenly as we provide continuous access on a stand-ready basis to the solar energy system. We reflect the differences between revenue recognition and cash payments received in accounts receivable, other assets or deferred revenue, as appropriate. Revenue allocated to remaining performance obligations represents contracted revenue we have not yet recognized and includes deferred revenue as well as amounts that will be invoiced and recognized as revenue in future periods. Contracted but not yet recognized revenue was approximately $1.3 billion as of June 30, 2020, of which we expect to recognize approximately 4% over the next 12 months. We do not expect the annual recognition to vary significantly over approximately the next 20 years as the vast majority of existing solar service agreements have at least 20 years remaining, given the average age of the fleet of solar energy systems under contract is less than three years.

PPAs.    Customers purchase electricity from us under PPAs. Pursuant to ASC 606, we recognize revenue based upon the amount of electricity delivered as determined by remote monitoring equipment at solar rates specified under the PPAs. All customers must pass our credit evaluation process. The PPAs generally have a term of 25 years with an opportunity for customers to renew for up to an additional 10 years, via two five-year renewal options.

Leases.    We are the lessor under lease agreements for solar energy systems and energy storage systems, which do not meet the definition of a lease under ASC 842 and are accounted for as contracts with customers under ASC 606. We recognize revenue on a straight-line basis over the contract term as we satisfy our obligation to provide continuous access to the solar energy system. All customers must pass our credit evaluation process. The lease agreements generally have a term of 25 years with an opportunity for customers to renew for up to an additional 10 years, via two five-year renewal options.

We provide customers under our lease agreements a performance guarantee that each solar energy system will achieve a certain specified minimum solar energy production output, which is a significant proportion of its expected output. The specified minimum solar energy production output may not be achieved due to natural fluctuations in the weather or equipment failures from exposure and wear and tear outside of our control, among other factors. We determine the amount of the guaranteed output based on a number of different factors, including: (a) the specific site information relating to the tilt of the panels, azimuth (a horizontal angle measured clockwise in degrees from a reference direction) of the panels, size of the system, and shading on site; (b) the calculated amount of available irradiance (amount of energy for a given flat surface facing a specific direction) based on historical average weather data and (c) the calculated amount of energy output of the solar energy system. While actual irradiance levels can significantly change year over year due to natural fluctuations in the weather, we expect the levels to average out over the term of a 25-year lease and to approximate the levels used in determining the amount of the performance guarantee. Generally, weather fluctuations are the most likely reason a solar energy system may not achieve a certain specified minimum solar energy production output.

If the solar energy system does not produce the guaranteed production amount, we are required to refund a portion of the previously remitted customer payments, where the repayment is calculated as the product of (a) the shortfall production amount and (b) the dollar amount (guaranteed rate) per kWh that is fixed throughout the term of the contract. These remittances of a

14

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

customer's payments, if needed, are payable in January following the end of the first three years of the solar energy system's placed in service date and then every annual period thereafter. See Note 14, Commitments and Contingencies.

Solar Renewable Energy Certificates.    Each solar renewable energy certificate ("SREC") represents one megawatt hour (1,000 kWh) generated by a solar energy system. SRECs can be sold with or without the actual electricity associated with the renewable-based generation source. We account for the SRECs we generate from our solar energy systems as governmental incentives with no costs incurred to obtain them and do not consider those SRECs output of the underlying solar energy systems. We classify these SRECs as inventory held until sold and delivered to third parties. As we did not incur costs to obtain these governmental incentives, the inventory carrying value for the SRECs was $0 as of June 30, 2020 and December 31, 2019. We enter into economic hedges related to expected production of SRECs through forward contracts. The contracts require us to physically deliver the SRECs upon settlement. We recognize the related revenue under ASC 606 upon satisfaction of the performance obligation to transfer the SRECs to the stated counterparty. Payments are typically received within one month of transferring the SREC to the counterparty. The costs related to the sales of SRECs are generally limited to broker fees (recorded in cost of revenue—other), which are only paid in connection with certain transactions. In certain circumstances we are required to purchase SRECs on the open market to fulfill minimum delivery requirements under our forward contracts.

Loans.    See discussion of loan revenue in the "Loans" section below.

Other Revenue.    Other revenue includes certain state incentives, revenue from the direct sale of energy storage systems to customers and sales of service plans. We recognize revenue from state incentives in the periods in which they are earned. We recognize revenue from the direct sale of energy storage systems in the period in which the storage components are placed in service. Service plans are available to customers whose solar energy system was not originally sold by Sunnova. We recognize revenue from service plan contracts over the life of the contract, which is typically five years.

Loans

We offer a loan program, under which the customer finances the purchase of a solar energy system or energy storage system through a solar service agreement, typically for a term of 10 or 25 years. We recognize cash payments received from customers on a monthly basis under our loan program (a) as interest income, to the extent attributable to earned interest on the contract that financed the customer's purchase of the solar energy system or energy storage system; (b) as a reduction of a note receivable on the balance sheet, to the extent attributable to a return of principal (whether scheduled or prepaid) on the contract that financed the customer's purchase of the solar energy system or energy storage system; and (c) as revenue, to the extent attributable to payments for operations and maintenance services provided by us. To qualify for the loan program, a customer must pass our credit evaluation process, which requires the customer to have a minimum FICO^® score of 650 to 720 depending on certain circumstances, and we secure the loans with the solar energy systems or energy storage systems financed. The credit evaluation process is performed once for each customer at the time the customer is entering into the solar service agreement with us.

Our investments in solar energy systems and energy storage systems related to the loan program that are not yet placed in service are recorded in other assets in the consolidated balance sheets and are transferred to customer notes receivable upon being placed in service. Customer notes receivable are recorded at amortized cost, net of an allowance for credit losses (as described below), in other current assets and customer notes receivable in the consolidated balance sheets. Accrued interest receivable related to our customer notes receivable is recorded in accounts receivable—trade, net in the consolidated balance sheets. Interest income from customer notes receivable is recorded in interest income in the consolidated statements of operations. The amortized cost of our customer notes receivable is equal to the principal balance of customer notes receivable outstanding and does not include accrued interest receivable. Customer notes receivable continue to accrue interest until they are written off against the allowance, which occurs when the balance is 180 days or more past due unless the balance is in the process of collection. Customer notes receivable are considered past due one day after the due date based on the contractual terms of the loan agreement. In all cases, customer notes receivable balances are placed on a nonaccrual status or written off at an earlier date when they are deemed uncollectible. Expected recoveries do not exceed the aggregate of amounts previously written off and expected to be written off. Accrued interest receivable for customer notes receivable placed on a nonaccrual status is recorded as a reduction to interest income. Interest received on such customer notes receivable is accounted for on a cash basis until the customer notes receivable qualifies for the return to accrual status. Customer notes receivable are returned to accrual status when there is no longer any principal or interest amounts past due and future payments are reasonably assured.

The allowance for credit losses is deducted from the customer notes receivable amortized cost to present the net amount expected to be collected. It is measured on a collective (pool) basis when similar risk characteristics (such as financial asset type, customer credit rating, contractual term and vintage) exist. In determining the allowance for credit losses, we identify customers with potential disputes or collection issues and consider our historical level of credit losses and current economic

15

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

trends that might impact the level of future credit losses. Adjustments to historical loss information are made for differences in current loan-specific risk characteristics, such as differences in underwriting standards. Expected credit losses are estimated over the contractual term of the loan agreements, adjusted for expected prepayments when appropriate. The contractual term excludes expected extensions, renewals and modifications unless either of the following applies: (a) we have a reasonable expectation at the reporting date that a troubled debt restructuring will be executed with an individual customer or (b) the extension or renewal options are included in the original or modified contract at the reporting date and are not unconditionally cancelable by us. As of June 30, 2020, we have not experienced a significant increase in delinquent customer notes receivable and have not made any significant adjustments to our allowance for credit losses related to loans as a result of the COVID-19 pandemic. See Note 6, Customer Notes Receivable.

Deferred Revenue

Deferred revenue consists of amounts for which the criteria for revenue recognition have not yet been met and includes (a) down payments and partial or full prepayments from customers, (b) differences due to the timing of energy production versus billing for certain types of PPAs and (c) payments for unfulfilled performance obligations from the loan program which will be recognized on a straight-line basis over the remaining term of the respective solar service agreements. Deferred revenue was $34.0 million as of December 31, 2018. The following table presents the detail of deferred revenue as recorded in other current liabilities and other long-term liabilities in the unaudited condensed consolidated balance sheets:

	As of   June 30, 2020		As of   December 31, 2019
	(in thousands)
Loans	$	63,121	$	46,958
PPAs and leases	9,461		8,895
SRECs	3,000		3,000
Total (1)	$	75,582	$	58,853

(1) Of this amount, $4.7 million and $2.1 million is recorded in other current liabilities as of June 30, 2020 and December 31, 2019, respectively.

During the six months ended June 30, 2020 and 2019, we recognized revenue of $2.2 million and $1.5 million, respectively, from amounts recorded in deferred revenue at the beginning of the respective years.

New Accounting Guidance

New accounting pronouncements are issued by the FASB or other standard setting bodies and are adopted as of the specified effective date.

In December 2019, the FASB issued ASU No. 2019-12, Income Taxes: Simplifying the Accounting for Income Taxes, to remove certain exceptions and clarify and amend the existing guidance. This ASU is effective for annual and interim reporting periods in 2021. We have not yet determined the potential impact of this ASU on our consolidated financial statements and related disclosures.

In March 2020, the FASB issued ASU No. 2020-03, Codification Improvements to Financial Instruments, to clarify and amend the existing guidance. The amendments in this ASU are effective either upon issuance of this ASU or for annual and interim reporting periods in 2020. We adopted this ASU in January 2020 and determined it did not have a significant impact on our consolidated financial statements and related disclosures.

In March 2020, the FASB issued ASU No. 2020-04, Reference Rate Reform: Facilitation of the Effects of Reference Rate Reform on Financial Reporting, to provide temporary optional expedients and exceptions for applying GAAP to contracts, hedging relationships and other transactions affected by reference rate reform. This ASU is effective beginning in March 2020 or prospectively from a date through December 2022. We are currently evaluating the potential impact of this ASU on our consolidated financial statements and related disclosures.

16

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(3) Property and Equipment

The following table presents the detail of property and equipment, net as recorded in the unaudited condensed consolidated balance sheets:

	Useful Lives	As of   June 30, 2020		As of   December 31, 2019
	(in years)	(in thousands)
Solar energy systems	35	$	1,976,596	$	1,689,457
Construction in progress		141,826		143,449
Asset retirement obligations	30	30,950		26,967
Information technology systems	3	28,697		28,320
Computers and equipment	3-5	1,630		1,499
Leasehold improvements	3-6	2,467		1,014
Furniture and fixtures	7	836		735
Vehicles	4-5	1,640		1,632
Other	5-6	158		146
Property and equipment, gross		2,184,800		1,893,219
Less: accumulated depreciation		(178,685)		(148,159)
Property and equipment, net		$	2,006,115	$	1,745,060

Solar Energy Systems.    The amounts included in the above table for solar energy systems and substantially all the construction in progress relate to our customer contracts (including PPAs and leases). These assets had accumulated depreciation of $157.7 million and $130.9 million as of June 30, 2020 and December 31, 2019, respectively.

(4) Detail of Certain Balance Sheet Captions

The following table presents the detail of other current assets as recorded in the unaudited condensed consolidated balance sheets:

	As of   June 30, 2020		As of   December 31, 2019
	(in thousands)
Prepaid inventory	$	—	$	96,167
Inventory	120,804		43,749
Current portion of customer notes receivable	17,620		13,758
Other prepaid assets	4,980		7,380
Current portion of other notes receivable	918		982
Deferred receivables	2,937		1,506
Restricted cash	18,644		10,474
Other	25		—
Total	$	165,928	$	174,016

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NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

The following table presents the detail of other assets as recorded in the unaudited condensed consolidated balance sheets:

	As of   June 30, 2020		As of   December 31, 2019
	(in thousands)
Restricted cash	$	63,504	$	56,332
Construction in progress - customer notes receivable	37,942		37,137
Exclusivity and other bonus arrangements with dealers, net	47,190		32,791
Straight-line revenue adjustment	28,565		24,852
Other	18,498		18,600
Total	$	195,699	$	169,712

The following table presents the detail of other current liabilities as recorded in the unaudited condensed consolidated balance sheets:

	As of   June 30, 2020		As of   December 31, 2019
	(in thousands)
Interest payable	$	17,809	$	14,680
Current portion of performance guarantee obligations	2,947		4,067
Current portion of lease liability and other	1,045		561
Deferred revenue	4,733		2,086
Other	—		410
Total	$	26,534	$	21,804

(5) Asset Retirement Obligations ("ARO")

AROs consist primarily of costs to remove solar energy system assets and costs to restore the solar energy system sites to the original condition, which we estimate based on current market rates. For each solar energy system, we recognize the fair value of the ARO as a liability and capitalize that cost as part of the cost basis of the related solar energy system. The related assets are depreciated on a straight-line basis over 30 years, which is the estimated average time a solar energy system will be installed in a location before being removed, and the related liabilities are accreted to the full value over the same period of time. We revise our estimated future liabilities based on recent actual experiences, including third party cost estimates, average size of solar energy systems and inflation rates, which we evaluate at least annually. Changes in our estimated future liabilities are recorded as either a reduction or addition in the carrying amount of the remaining unamortized asset and the ARO and either decrease or increase our depreciation and accretion expense amounts prospectively. The following table presents the changes in AROs as recorded in other long-term liabilities in the unaudited condensed consolidated balance sheets:

	As of June 30,
	2020		2019
	(in thousands)
Balance at beginning of period	$	31,053	$	20,033
Additional obligations incurred	4,010		1,755
Accretion expense	1,013		640
Other	(33)		(21)
Balance at end of period	$	36,043	$	22,407

(6) Customer Notes Receivable

We offer a loan program, under which the customer finances the purchase of a solar energy system or energy storage system through a solar service agreement, typically for a term of 10 or 25 years. The following table presents the detail of

18

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

customer notes receivable as recorded in the unaudited condensed consolidated balance sheets and the corresponding fair values:

	As of   June 30, 2020		As of   December 31, 2019
	(in thousands)
Customer notes receivable	$	410,139	$	312,823
Allowance for credit losses	(13,543)		(1,091)
Customer notes receivable, net (1)	$	396,596	$	311,732
Estimated fair value, net	$	398,388	$	314,222

(1) Of this amount, $17.6 million and $13.8 million is recorded in other current assets as of June 30, 2020 and December 31, 2019, respectively.

The following table presents the changes in the allowance for credit losses related to customer notes receivable as recorded in the unaudited condensed consolidated balance sheets:

	Three Months Ended   June 30,				Six Months Ended   June 30,
	2020		2019		2020		2019
	(in thousands)
Balance at beginning of period	$	12,136	$	758	$	1,091	$	710
Impact of ASC 326 adoption	—		—		9,235		—
Provision for current expected credit losses (1)	1,407		—		3,218		—
Bad debt expense	—		162		—		273
Write off of uncollectible accounts	—		—		—		(39)
Other, net	—		24		(1)		—
Balance at end of period	$	13,543	$	944	$	13,543	$	944

(1) In addition, we recognized $9,000 and $62,000 of provision for current expected credit losses during the three and six months ended June 30, 2020, respectively, related to our long-term receivables for our leases.

As of June 30, 2020 and December 31, 2019, we invested $37.9 million and $37.1 million, respectively, in loan solar energy systems and energy storage systems not yet placed in service. For the three months ended June 30, 2020 and 2019, interest income related to our customer notes receivable was $6.6 million and $2.7 million, respectively. For the six months ended June 30, 2020 and 2019, interest income related to our customer notes receivable was $10.9 million and $5.0 million, respectively. As of June 30, 2020 and December 31, 2019, accrued interest receivable related to our customer notes receivable was $1.4 million and $869,000, respectively. As of June 30, 2020 and December 31, 2019, there were no customer notes receivable not accruing interest and thus, there was no allowance recorded for loans on nonaccrual status. For the three months ended June 30, 2020 and 2019, interest income of $0 was recognized for loans on nonaccrual status and accrued interest receivable of $0 was written off by reversing interest income. For the six months ended June 30, 2020 and 2019, interest income of $0 was recognized for loans on nonaccrual status and accrued interest receivable of $0 was written off by reversing interest income.

19

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

We consider the performance of our customer notes receivable portfolio and its impact on our allowance for credit losses. We also evaluate the credit quality based on the aging status and payment activity. The following table presents the aging of the amortized cost of customer notes receivable as of June 30, 2020:

	As of   June 30, 2020		As of   December 31, 2019
	(in thousands)
1-90 days past due	$	6,059	$	5,741
91-180 days past due	2,028		1,714
Greater than 180 days past due	2,872		1,206
Total past due	10,959		8,661
Not past due	399,180		304,162
Total	$	410,139	$	312,823

As of June 30, 2020 and December 31, 2019, the amortized cost of our customer notes receivable more than 90 days past due but not on nonaccrual status was $4.9 million and $2.9 million, respectively. The following table presents the amortized cost of our customer notes receivable based on payment activity.

	Amortized Cost by Origination Year
	2020		2019		2018		2017		2016		Prior		Total
	(in thousands)
Payment performance:
Performing	$	107,874	$	143,098	$	90,931	$	33,268	$	21,159	$	10,937	$	407,267
Nonperforming (1)	—		698		862		897		297		118		$	2,872
Total	$	107,874	$	143,796	$	91,793	$	34,165	$	21,456	$	11,055	$	410,139

(1) A nonperforming loan is a loan in which the customer is in default and has not made any scheduled principal or interest payments for 180 days or more.

(7) Long-Term Debt

Our subsidiaries with long-term debt include SEI, Sunnova Energy Corporation, Sunnova Asset Portfolio 4, LLC ("AP4"), Helios Issuer, LLC ("HELI"), Sunnova LAP Holdings, LLC ("LAPH"), Sunnova EZ-Own Portfolio, LLC ("EZOP"), Sunnova TEP II Holdings, LLC ("TEPIIH"), Sunnova Helios II Issuer, LLC ("HELII"), Sunnova RAYS I Issuer, LLC ("RAYSI"), Sunnova Helios III Issuer, LLC ("HELIII"), Sunnova TEP Holdings, LLC ("TEPH"), Sunnova TEP Inventory, LLC ("TEPINV"), Sunnova Sol Issuer, LLC ("SOLI") and Sunnova Helios IV Issuer, LLC ("HELIV"). The following table presents the detail of long-term debt, net as recorded in the unaudited condensed consolidated balance sheets:

20

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

	Six Months Ended June 30, 2020 Weighted Average Effective Interest Rates		As of June 30, 2020				Year Ended December 31, 2019 Weighted Average Effective Interest Rates		As of December 31, 2019
			Long-term		Current				Long-term		Current
	(in thousands, except interest rates)
SEI
7.75% convertible senior notes	17.41	%	$	—	$	—	7.75	%	$	55,000	$	—
9.75% convertible senior notes	11.85	%	245,000		—				—		—
Paid-in-kind			679		—				—		—
Debt discount, net			(97,960)		—				(16,913)		—
Deferred financing costs, net			(1,158)		—				(480)		—
Sunnova Energy Corporation
Notes payable	13.93	%	—		472		3.22	%	—		2,428
AP4
Secured term loan	10.81	%	—		—		5.61	%	86,369		6,109
Debt discount, net			—		—				(452)		—
Deferred financing costs, net			—		—				(196)		—
HELI
Solar asset-backed notes	6.56	%	210,684		6,736		6.56	%	213,632		8,673
Debt discount, net			(2,729)		—				(3,169)		—
Deferred financing costs, net			(4,801)		—				(5,586)		—
LAPH
Secured term loan	11.22	%	10,349		363		7.71	%	41,484		1,392
Debt discount, net			(171)		—				(401)		—
Deferred financing costs, net			(137)		—				(356)		—
EZOP
Warehouse credit facility	4.45	%	22,700		—		6.60	%	121,400		—
Debt discount, net			(1,804)		—				(2,178)		—
TEPIIH
Revolving credit facility	19.47	%	—		—		6.36	%	234,650		—
Debt discount, net			—		—				(2,219)		—
HELII
Solar asset-backed notes	5.72	%	233,064		11,850		5.77	%	241,309		13,005
Debt discount, net			(45)		—				(49)		—
Deferred financing costs, net			(5,471)		—				(5,873)		—
RAYSI
Solar asset-backed notes	5.51	%	123,347		6,170		5.47	%	126,828		6,327
Debt discount, net			(1,464)		—				(1,547)		—
Deferred financing costs, net			(4,547)		—				(4,759)		—
HELIII
Solar loan-backed notes	4.02	%	128,117		16,399		4.03	%	135,543		19,030
Debt discount, net			(2,479)		—				(2,532)		—
Deferred financing costs, net			(2,380)		—				(2,410)		—
TEPH
Revolving credit facility	6.32	%	231,000		—		6.70	%	90,325		—
Debt discount, net			(4,518)		—				(645)		—
TEPINV
Revolving credit facility	10.29	%	32,615		44,125		7.95	%	54,707		40,500
Debt discount, net			(2,148)		—				(2,856)		—
Deferred financing costs, net			(1,834)		—				(2,207)		—
SOLI
Solar asset-backed notes	3.90	%	395,587		13,267				—		—
Debt discount, net			(120)		—				—		—
Deferred financing costs, net			(9,415)		—				—		—
HELIV
Solar loan-backed notes	3.29	%	143,733		14,759				—		—
Debt discount, net			(956)		—				—		—
Deferred financing costs, net			(4,066)		—				—		—
Total			$	1,628,672	$	114,141			$	1,346,419	$	97,464

21

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Availability.    As of June 30, 2020, we had $402.3 million of available borrowing capacity under our various financing arrangements, consisting of $177.3 million under the EZOP warehouse credit facility, $206.5 million under the TEPH revolving credit facility and $18.5 million under the TEPINV revolving credit facility. There was no available borrowing capacity under any of our other financing arrangements. As of June 30, 2020, we were in compliance with all debt covenants under our financing arrangements.

Weighted Average Effective Interest Rates.    The weighted average effective interest rates disclosed in the table above are the weighted average stated interest rates for each debt instrument plus the effect on interest expense for other items classified as interest expense, such as the amortization of deferred financing costs, amortization of debt discounts and commitment fees on unused balances for the period of time the debt was outstanding during the indicated periods.

SEI Debt.    In May 2020, we issued and sold an aggregate principal amount of $130.0 million of our 9.75% convertible senior notes ("9.75% convertible senior notes") in a private placement at an issue price of 95%, for an aggregate purchase price of $123.5 million. The 9.75% convertible senior notes mature in April 2025 unless earlier redeemed, repurchased or converted. We granted the investors of the 9.75% convertible senior notes an option to purchase up to an additional $60.0 million aggregate principal amount of 9.75% convertible senior notes on the same terms and conditions, and the investors exercised this option and completed the purchase of such additional 9.75% convertible senior notes in June 2020. In May 2020, we also exchanged all $55.0 million aggregate principal amount outstanding of our 7.75% convertible senior notes for an equal principal amount of our 9.75% convertible senior notes.

The investors in our 9.75% convertible senior notes may, at their option, convert all or any portion of their 9.75% convertible senior notes. Upon conversion, we may satisfy our conversion obligation by paying and/or delivering, as the case may be, cash, shares of common stock, or a combination of cash and shares of common stock, at our option, subject to certain terms and conditions. The conversion rate for the 9.75% convertible senior notes is 74.0741 shares of common stock per $1,000 principal amount of 9.75% convertible senior notes, plus accrued and unpaid interest, which is equivalent to an initial conversion price (excluding interest) of approximately $13.50 per share of common stock. The conversion rate is subject to adjustment under certain circumstances in accordance with the terms of the related indenture. On and after May 14, 2023, we have the right to cause the conversion of the 9.75% convertible senior notes if certain specified conditions are met, including minimum common stock price and minimum volume conditions.

At any time prior to May 14, 2022, we may, at our option, redeem for cash up to 33.33% aggregate principal amount of the then outstanding 9.75% convertible senior notes (after giving effect to any conversions on or prior to such redemption date) at a redemption price equal to 115% of aggregate principal amount of 9.75% convertible senior notes so redeemed, plus any accrued and unpaid interest to, but excluding, the redemption date, using the net cash proceeds of one or more equity offerings by us, provided the redemption occurs within 180 days of the date of the closing of such equity offering.

At any time on or after May 14, 2023, we may, at our option, redeem for cash all (but not less than all) of the 9.75% convertible senior notes at the redemption price (expressed as percentages of principal amount) set forth below, plus any accrued and unpaid interest, if any, to, but excluding, the redemption date accrued and unpaid interest, if any, to, but excluding, the redemption date:

Period	Percentage
At any time on and after May 14, 2023 but prior to May 14, 2024	115%
At any time on and after May 14, 2024	110%

On and after September 23, 2024, the holders of the 9.75% convertible senior notes have the option to require us to repurchase their 9.75% convertible senior notes for cash at a purchase price of 110% of the aggregate principal amount repurchased, plus accrued and unpaid interest to the date of repurchase.

For accounting purposes and in accordance with GAAP, the exchange of our 7.75% convertible senior notes for our 9.75% convertible senior notes was treated as a debt modification and we separated the 9.75% convertible senior notes into liability and equity components. As of June 30, 2020, the carrying amount of the liability component for the 9.75% convertible senior notes of approximately $146.6 million (net of an unamortized debt discount of $98.0 million and unamortized issuance costs of $1.2 million) was determined based on a discounted cash flow analysis and a binomial lattice model. The valuation required the use of Level 3 unobservable inputs and subjective assumptions, including but not limited to, the stock price volatility and bond yield. The use of alternative market assumptions and estimation methodologies could have had an effect on these estimates of fair value. As of June 30, 2020, the carrying amount of the equity component for the 9.75% convertible

22

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

senior notes of approximately $87.6 million (net of unamortized issuance costs of $622,000), representing the conversion option, was determined by deducting the carrying amount of the liability components from the principal amount of the 9.75% convertible senior notes. This difference between the principal amount of the 9.75% convertible senior notes and the liability component represents the debt discount, presented as a reduction to the 9.75% convertible senior notes in the unaudited condensed consolidated balance sheets and is amortized to interest expense, net using the effective interest method over the remaining term of the 9.75% convertible senior notes. The equity component of the 9.75% convertible senior notes is included in additional paid-in-capital—common stock in the unaudited condensed consolidated balance sheets and is not remeasured as long as it continues to meet the conditions for equity classification.

AP4 Debt, TEPIIH Debt and LAPH Debt.    In February 2020, the aggregate principal amounts outstanding under the AP4 financing agreement and TEPIIH revolving credit facility of $92.0 million and $226.6 million, respectively, were fully repaid using proceeds from the SOLI Notes (as defined below), all related interest rate swaps were unwound and the debt facilities were terminated. In addition, proceeds from the SOLI Notes were used to repay $32.0 million of LAPH debt.

EZOP Debt.    In June 2020, proceeds from the HELIV Notes (as defined below) were used to repay $149.3 million in aggregate principal amount outstanding of EZOP debt.

TEPH Debt.    In March 2020, we amended the TEPH revolving credit facility to, among other things, (a) increase the maximum facility amount to $400.0 million, with all of the increased amount coming from Class A lenders on an uncommitted basis, (b) increase both the Class A and Class B interest rates by 0.40% and (c) modify the borrowing base calculation to shift a portion of the borrowing base from Class B to Class A lenders. In May 2020, we amended the TEPH revolving credit facility to, among other things, (a) increase the aggregate commitment amount from $200.0 million to $390.0 million and (b) increase the unused line fee on such committed amounts. In June 2020, we amended the TEPH revolving credit facility to, among other things, (a) increase the aggregate commitment amount from $390.0 million to $437.5 million, (b) modify the advance rates for solar energy systems and (c) modify the interest rates to an adjusted LIBOR rate plus a weighted average margin of 4.15%.

SOLI Debt.    In February 2020, we pooled and transferred eligible solar energy systems and the related asset receivables into wholly-owned subsidiaries of SOLI, a special purpose entity, that issued $337.1 million in aggregate principal amount of Series 2020-1 Class A solar asset-backed notes and $75.4 million in aggregate principal amount of Series 2020-1 Class B solar asset-backed notes (collectively, the "SOLI Notes") with a maturity date of January 2055. The SOLI Notes were issued at a discount of 0.89% for Class A and 0.85% for Class B and bear interest at an annual rate equal to 3.35% and 5.54%, respectively. The cash flows generated by the solar energy systems of SOLI's subsidiaries are used to service the quarterly principal and interest payments on the SOLI Notes and satisfy SOLI's expenses, and any remaining cash can be distributed to Sunnova Sol Depositor, LLC, SOLI's sole member. In connection with the SOLI Notes, certain of our affiliates receive a fee for managing and servicing the solar energy systems pursuant to a transaction management agreement and managing and servicing agreements. In addition, Sunnova Energy Corporation has guaranteed (a) the obligations of certain of our subsidiaries to manage and service the solar energy systems pursuant to management, servicing and transaction management agreements, (b) the managing members' obligations, in such capacity, under the related financing fund's limited liability company agreement and (c) certain of our subsidiaries' obligations to repurchase or substitute certain ineligible solar energy systems eventually sold to SOLI pursuant to the sale and contribution agreement. SOLI is also required to maintain a liquidity reserve account, a tax loss insurance proceeds account and a supplemental reserve account for the benefit of the holders of the SOLI Notes, each of which must remain funded at all times to the levels specified in the SOLI Notes. The creditors of SOLI have no recourse to our other assets except as expressly set forth in the SOLI Notes.

HELIV Debt.    In June 2020, we pooled and transferred eligible solar loans and the related receivables into HELIV, a special purpose entity, that issued $135.9 million in aggregate principal amount of Series 2020-A Class A solar loan-backed notes and $22.6 million in aggregate principal amount of Series 2020-A Class B solar loan-backed notes (collectively, the "HELIV Notes") with a maturity date of June 2047. The HELIV Notes were issued at a discount of 0.01% for Class A and 4.18% for Class B and bear interest at an annual rate of 2.98% and 7.25%, respectively. The cash flows generated by these solar loans are used to service the monthly principal and interest payments on the HELIV Notes and satisfy HELIV's expenses, and any remaining cash can be distributed to Sunnova Helios IV Depositor, LLC, HELIV's sole member. In connection with the HELIV Notes, certain of our affiliates receive a fee for managing and servicing the solar energy systems pursuant to management and service agreements. In addition, Sunnova Energy Corporation has guaranteed, among other things, (a) the obligations of certain of our subsidiaries to manage and service the solar energy systems pursuant to management and servicing agreements and (b) certain of our subsidiaries' obligations to repurchase or substitute certain ineligible solar loans eventually sold to HELIV pursuant to the related sale and contribution agreement. HELIV is also required to maintain a reserve account, a supplemental reserve account for equipment replacement and a capitalized interest reserve account for the benefit of the holders of the HELIV Notes, each of which must be funded at all times to the levels specified in the HELIV Notes. The creditors of HELIV have no recourse to our other assets except as expressly set forth in the HELIV Notes.

23

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Fair Values of Long-Term Debt.    The fair values of our long-term debt and the corresponding carrying amounts are as follows:

	As of June 30, 2020				As of December 31, 2019
	Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value
	(in thousands)
SEI 7.75% convertible senior notes	$	—	$	—	$	55,000	$	37,964
SEI 9.75% convertible senior notes	245,679		241,398		—		—
Sunnova Energy Corporation notes payable	472		472		2,428		2,428
AP4 secured term loan	—		—		92,478		92,478
HELI solar asset-backed notes	217,420		226,751		222,305		223,895
LAPH secured term loan	10,712		10,712		42,876		42,876
EZOP warehouse credit facility	22,700		22,700		121,400		121,400
TEPIIH revolving credit facility	—		—		234,650		234,650
HELII solar asset-backed notes	244,914		298,462		254,314		281,850
RAYSI solar asset-backed notes	129,517		152,708		133,155		139,004
HELIII solar loan-backed notes	144,516		162,185		154,573		155,701
TEPH revolving credit facility	231,000		231,000		90,325		90,325
TEPINV revolving credit facility	76,740		76,740		95,207		95,207
SOLI solar asset-backed notes	408,854		442,973		—		—
HELIV solar loan-backed notes	158,492		158,818		—		—
Total (1)	$	1,891,016	$	2,024,919	$	1,498,711	$	1,517,778

(1) Amounts exclude the net deferred financing costs and net debt discounts of $148.2 million and $54.8 million as of June 30, 2020 and December 31, 2019, respectively.

For the AP4, LAPH, EZOP, TEPIIH, TEPH and TEPINV debt, the estimated fair values approximate the carrying amounts due primarily to the variable nature of the interest rates of the underlying instruments. For the notes payable, the estimated fair value approximates the carrying amount due primarily to the short-term nature of the instruments. For the convertible senior notes and the HELI, HELII, RAYSI, HELIII, SOLI and HELIV debt, we determined the estimated fair values based on a yield analysis of similar type debt.

(8) Derivative Instruments

Interest Rate Swaps on AP4 Debt.    In February 2020, all AP4 interest rate swaps were unwound in connection with the termination of the AP4 financing agreement. See Note 7, Long-Term Debt.

Interest Rate Swaps on TEPIIH Debt.    In February 2020, all TEPIIH interest rate swaps were unwound in connection with the termination of the TEPIIH revolving credit facility. See Note 7, Long-Term Debt.

Interest Rate Swaps on EZOP Debt.    In June 2020, EZOP unwound interest rate swaps with a notional amount of $126.1 million and recorded a realized loss of $5.8 million in connection with the repayment of the aggregate principal amount outstanding of EZOP debt. See Note 7, Long-Term Debt.

24

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

The following table presents a summary of the outstanding derivative instruments:

	As of June 30, 2020					As of December 31, 2019
	Effective Date	Termination Date	Fixed Interest Rate	Aggregate Notional Amount		Effective Date	Termination Date	Fixed Interest Rate	Aggregate Notional Amount
	(in thousands, except interest rates)
AP4			—%	$	—	March 2018	July 2020	2.338%	$	99,762
LAPH	November 2018	October 2036	3.409%	10,640		November 2018	October 2036	3.409%	43,298
EZOP	June 2020	September 2029	2.620%	24,989		June 2019 - November 2019	July 2029 - March 2030	1.631% - 2.620%	100,083
TEPIIH			—%	—		September 2018 - November 2019	July 2031 - October 2041	1.909% - 3.383%	225,845
TEPH	September 2018 - January 2023	January 2023 - January 2038	0.528% - 3.125%	202,418		September 2019 - January 2023	January 2023 - July 2034	1.620% - 1.928%	55,115
TEPINV	December 2019	December 2022	2.500%	76,682				—%	—
Total				$	314,729				$	524,103

The following table presents the fair value of the interest rate swaps as recorded in the unaudited condensed consolidated balance sheets:

	As of   June 30, 2020		As of   December 31, 2019
	(in thousands)
Other assets	$	6	$	360
Other current liabilities	—		(397)
Other long-term liabilities	(31,724)		(27,092)
Total, net	$	(31,718)	$	(27,129)

We did not designate the interest rate swaps as hedging instruments for accounting purposes. As a result, we recognize changes in fair value immediately in interest expense, net. The following table presents the impact of the interest rate swaps as recorded in the unaudited condensed consolidated statements of operations:

	Three Months Ended   June 30,				Six Months Ended   June 30,
	2020		2019		2020		2019
	(in thousands)
Realized loss	$	6,105	$	8,788	$	38,003	$	12,372
Unrealized (gain) loss	(3,053)		10,417		4,543		17,449
Total	$	3,052	$	19,205	$	42,546	$	29,821

(9) Income Taxes

Our effective income tax rate is 0% for the three and six months ended June 30, 2020 and 2019. Total income tax differs from the amounts computed by applying the statutory income tax rate to loss before income tax primarily as a result of our valuation allowance. We assessed whether we had any significant uncertain tax positions taken in a filed tax return, planned to be taken in a future tax return or claim, or otherwise subject to interpretation and determined there were none not more likely than not to be sustained upon examination, including resolution of any related appeals or litigation processes, based on the technical merits of the position, or prospectively approved when such approval may be sought in advance. Accordingly, we recorded no reserve for uncertain tax positions. Should a provision for any interest or penalties relative to unrecognized tax benefits be necessary, it is our policy to accrue for such in our income tax accounts. There were no such accruals as of June 30, 2020 and December 31, 2019 and we do not expect a significant change in gross unrecognized tax benefits in the next twelve months. Our tax years after 2011 remain subject to examination by the Internal Revenue Service and the states and territories in which we operate.

In March 2020, the U.S. enacted the Coronavirus Aid, Relief, and Economic Security Act ("CARES Act"), featuring significant tax provisions and relief measures to assist individuals and businesses impacted by the economic effects of the

25

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

COVID-19 pandemic. Relief measures intended to aid businesses in employee retention include payroll tax relief and a refundable tax credit for employers who retain employees during the COVID-19 pandemic. In addition, among other things, the CARES Act establishes (a) a five-year carryback of net operating losses generated in 2018, 2019 and 2020, (b) a temporary suspension of the 80% limitation on the use of net operating losses in 2018, 2019 and 2020 and (c) an increase to the adjusted taxable income limitation from 30% to 50% for business interest deductions under Section 163(j) of the U.S. Internal Revenue Code of 1986, as amended, for 2019 and 2020. We have historically maintained, and continue to maintain, a full valuation allowance against deferred tax assets. Due to our aggregate amount of net operating losses, we cannot utilize the carryback or limitation suspension provisions pertaining to the usage of net operating losses. However, the increase to the adjusted taxable income limitation for business interest deductions resulted in a decrease to our deferred tax assets for unused business interest deductions and an offsetting increase to our net operating loss carryforward. The CARES Act does not have any impact on our valuation allowance.

(10) Related-Party Transactions

SEI Debt.    Certain of our affiliates who have representatives on our Board are holders of more than 10% of our 9.75% convertible senior notes. As of June 30, 2020, such holders own approximately $39.9 million aggregate principal amount of our 9.75% convertible senior notes, which is recorded in long-term debt, net in the unaudited condensed consolidated balance sheet. For the three and six months ended June 30, 2020, we recorded expense related to such holders of approximately $716,000 in interest expense, net in the unaudited condensed consolidated statement of operations. See Note 7, Long-Term Debt.

(11) Redeemable Noncontrolling Interests

In February 2020, we admitted a tax equity investor as the Class A member of Sunnova TEP IV-C, LLC ("TEPIVC"), a subsidiary of Sunnova TEP IV-C Manager, LLC, which is the Class B member of TEPIVC. The Class A member of TEPIVC made a total capital commitment of $75.0 million. In May 2020, we admitted a tax equity investor as the Class A member of Sunnova TEP IV-D, LLC ("TEPIVD"), a subsidiary of Sunnova TEP IV-D Manager, LLC, which is the Class B member of TEPIVD. The Class A member of TEPIVD made a total capital commitment of $75.0 million. The carrying values of the redeemable noncontrolling interests were equal to or greater than the redemption values as of June 30, 2020 and December 31, 2019, with the exception of Sunnova TEP IV-A, LLC, Sunnova TEP IV-B, LLC, TEPIVC and TEPIVD, for which we are not required to carry a redemption value.

(12) Equity-Based Compensation

Stock Options

The following table summarizes stock option activity:

	Number of Stock Options	Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Weighted Average Grant Date Fair Value		Aggregate Intrinsic Value
							(in thousands)
Outstanding, December 31, 2019	4,304,309	$	15.86	7.08			$	242
Exercised	(54,987)	$	12.92				$	228
Forfeited	(105,526)	$	18.87		$	3.56
Outstanding, June 30, 2020	4,143,796	$	15.83	6.54			$	13,646
Exercisable, June 30, 2020	3,592,867	$	15.85	6.37			$	11,925
Vested and expected to vest, June 30, 2020	4,143,796	$	15.83	6.54			$	13,646
Non-vested, June 30, 2020	550,929				$	3.67

The number of stock options that vested during the three months ended June 30, 2020 and 2019 was 104,509 and 230,101, respectively. The number of stock options that vested during the six months ended June 30, 2020 and 2019 was 369,716 and 744,099, respectively. The grant date fair value of stock options that vested during the three months ended June 30, 2020 and 2019 was $428,000 and $933,000, respectively. The grant date fair value of stock options that vested during the six months ended June 30, 2020 and 2019 was $1.2 million and $2.5 million, respectively. As of June 30, 2020, there was no unrecognized compensation expense related to stock options.

26

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Restricted Stock Units

The following table summarizes restricted stock unit activity:

	Number of Restricted Stock Units	Weighted Average Grant Date Fair Value
Outstanding, December 31, 2019	1,426,139	$	11.93
Granted	1,110,313	$	11.53
Vested	(27,083)	$	12.00
Forfeited	(23,706)	$	11.99
Outstanding, June 30, 2020	2,485,663	$	11.75

The number of restricted stock units that vested during the three and six months ended June 30, 2020 was 0 and 27,083, respectively. The grant date fair value of restricted stock units that vested during the three and six months ended June 30, 2020 was $0 and $325,000, respectively. As of June 30, 2020, there was $22.1 million of total unrecognized compensation expense related to restricted stock units, which is expected to be recognized over the weighted average period of 1.89 years.

(13) Basic and Diluted Net Loss Per Share

The following table sets forth the computation of our basic and diluted net loss per share:

	Three Months Ended   June 30,				Six Months Ended   June 30,
	2020		2019		2020		2019
	(in thousands, except share and per share amounts)
Net loss attributable to stockholders	$	(25,258)	$	(50,738)	$	(96,333)	$	(89,252)
Dividends earned on Series A convertible preferred stock	—		(9,760)		—		(19,271)
Dividends earned on Series C convertible preferred stock	—		(2,762)		—		(5,454)
Net loss attributable to common stockholders—basic and diluted	$	(25,258)	$	(63,260)	$	(96,333)	$	(113,977)
Net loss per share attributable to common stockholders—basic and diluted	$	(0.30)	$	(7.32)	$	(1.15)	$	(13.20)
Weighted average common shares outstanding—basic and diluted	84,033,278		8,636,598		84,017,214		8,636,065

The following table presents the weighted average shares of common stock equivalents that were excluded from the computation of diluted net loss per share for the periods presented because including them would have been anti-dilutive:

	Three Months Ended   June 30,		Six Months Ended   June 30,
	2020	2019	2020	2019
Equity-based compensation awards	6,650,994	4,323,658	6,261,779	4,396,926
Convertible preferred stock	—	59,179,925	—	59,163,392
Convertible senior notes	10,259,540	—	7,245,154	—

(14) Commitments and Contingencies

Legal.    We are a party to a number of lawsuits, claims and governmental proceedings which are ordinary, routine matters incidental to our business. In addition, in the ordinary course of business, we periodically have disputes with dealers and customers. We do not expect the outcomes of these matters to have, either individually or in the aggregate, a material adverse effect on our financial position or results of operations.

Performance Guarantee Obligations.    As of June 30, 2020, we recorded $4.0 million relating to our guarantee of certain specified minimum solar energy production output under our leases and loans, of which we include $2.9 million in other current liabilities and $1.0 million in other long-term liabilities in the unaudited condensed consolidated balance sheet. As of December

27

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

31, 2019, we recorded $6.5 million relating to these guarantees, of which $4.1 million is recorded in other current liabilities and $2.4 million is recorded in other long-term liabilities in the unaudited condensed consolidated balance sheet. The changes in our aggregate performance guarantee obligations are as follows:

	As of June 30,
	2020		2019
	(in thousands)
Balance at beginning of period	$	6,468	$	6,044
Accruals for obligations issued	1,384		1,535
Settlements made in cash	(3,861)		(2,582)
Balance at end of period	$	3,991	$	4,997

Operating and Finance Leases.    We lease real estate and certain office equipment under operating leases and certain other office equipment under finance leases. The following table presents the detail of lease expense and lease income as recorded in general and administrative expense and other operating income, respectively, in the unaudited condensed consolidated statements of operations:

	Three Months Ended   June 30,				Six Months Ended   June 30,
	2020		2019		2020		2019
	(in thousands)
Operating lease expense	$	335	$	270	$	671	$	570
Finance lease amortization expense	—		2		2		4
Short-term lease expense	6		12		22		23
Variable lease expense	172		252		179		463
Sublease income	—		(19)		—		(37)
Total	$	513	$	517	$	874	$	1,023

The following table presents the detail of right-of-use assets and lease liabilities as recorded in other assets and other current liabilities/other long-term liabilities, respectively, in the unaudited condensed consolidated balance sheets:

	As of   June 30, 2020		As of   December 31, 2019
	(in thousands)
Right-of-use assets:
Operating leases	$	9,212	$	9,668
Finance leases	—		5
Total right-of-use assets	$	9,212	$	9,673
Current lease liabilities:
Operating leases	$	1,056	$	556
Finance leases	—		5
Long-term leases liabilities
Operating leases	8,840		9,389
Total lease liabilities	$	9,896	$	9,950

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NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Other information related to leases was as follows:

	Six Months Ended   June 30,
	2020		2019
	(in thousands)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	263	$	525
Financing cash flows from finance leases	1		5
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	—		680
Finance leases	—		13

	As of June 30,
	2020		2019
Weighted average remaining lease term (years):
Operating leases	8.93		3.08
Finance leases	0.00		1.17
Weighted average discount rate:
Operating leases	3.94	%	4.58	%
Finance leases	—	%	4.26	%

Future minimum lease payments under our non-cancelable leases as of June 30, 2020 were as follows:

	Operating Leases
	(in thousands)
Remaining 2020	$	758
2021	1,536
2022	1,559
2023	1,594
2024	1,616
2025 and thereafter	7,617
Total	14,680
Amount representing interest	(2,373)
Amount representing leasehold incentives	(2,411)
Present value of future payments	9,896
Current portion of lease liability	(1,056)
Long-term portion of lease liability	$	8,840

Letters of Credit.    In connection with various security arrangements for an office lease and merchant banking activities, we have letters of credit outstanding of $550,000 and $725,000 as of June 30, 2020 and December 31, 2019, respectively. The letters of credit are cash collateralized for the same amount or a lesser amount and this cash is classified as restricted cash.

Guarantees or Indemnifications.    We enter into contracts that include indemnifications and guarantee provisions. In general, we enter into contracts with indemnities for matters such as breaches of representations and warranties and covenants contained in the contract and/or against certain specified liabilities. Examples of these contracts include dealer agreements, debt agreements, asset purchases and sales agreements, service agreements and procurement agreements. We are unable to estimate our maximum potential exposure under these agreements until an event triggering payment occurs. We do not expect to make any material payments under these agreements.

Dealer Commitments.    As of June 30, 2020, the net unamortized balance of payments to dealers for exclusivity and other similar arrangements was $47.2 million. Under these agreements, we paid $11.4 million and $20.0 million during the three months ended June 30, 2020 and 2019, respectively, and we paid $16.7 million and $22.0 million during the six months

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NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

ended June 30, 2020 and 2019, respectively. We could be obligated to make maximum payments, excluding additional amounts payable on a per watt basis if even higher thresholds are met, as follows:

	Dealer Commitments
	(in thousands)
Remaining 2020	$	10,140
2021	31,981
2022	31,965
2023	7,822
2024	6,370
2025 and thereafter	—
Total	$	88,278

Purchase Commitments.    In August 2019, we amended an agreement with a supplier in which we agreed to purchase a minimum amount of energy storage systems and components for five years. These purchases are recorded to inventory in other current assets in the consolidated balance sheets. Under this agreement, we could be obligated to make minimum purchases as follows:

	Purchase Commitments
	(in thousands)
Remaining 2020	$	6,846
2021	27,359
2022	27,243
2023	27,053
2024	20,152
2025 and thereafter	—
Total	$	108,653

Information Technology Commitments.    We have certain long-term contractual commitments related to information technology software services and licenses. Future commitments as of June 30, 2020 were as follows:

	Information Technology Commitments
	(in thousands)
Remaining 2020	$	1,739
2021	3,753
2022	37
2023	26
2024	26
2025 and thereafter	7
Total	$	5,588

(15) Subsequent Events

Common Stock.    In July 2020, certain of our stockholders completed an underwritten public offering (the "Secondary Offering") of 6,988,423 shares of our common stock, including 911,533 shares related to the underwriters' option to purchase additional shares. As part of the Secondary Offering, certain of the holders of our 9.75% convertible senior notes converted approximately $10.5 million aggregate principal amount, including accrued and unpaid interest to the date of the conversion, of our 9.75% convertible senior notes into 776,890 shares of our common stock. We did not offer any shares of our common stock in connection with the Secondary Offering and we did not receive any proceeds from the Secondary Offering.

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NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Redeemable Noncontrolling Interests.    In July 2020, we admitted a tax equity investor as the Class A member of Sunnova TEP IV-F, LLC ("TEPIVF"), a subsidiary of Sunnova TEP IV-F Manager, LLC, which is the class B member of TEPIVF. The Class A member of TEPIVF made a total capital commitment of $10.0 million.

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Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations.

The following discussion and analysis contain forward-looking statements that are subject to risks, uncertainties and assumptions. Our actual results and timing of selected events may differ materially from those anticipated in these forward-looking statements as a result of many factors, including but not limited to those discussed under "Special Note Regarding Forward-Looking Statements" above and "Special Note Regarding Forward-Looking Statements", "Risk Factors" and elsewhere in our Annual Report on Form 10-K filed with the Securities and Exchange Commission ("SEC") on February 25, 2020, our Quarterly Report on Form 10-Q filed with the SEC on May 15, 2020 and elsewhere in this Quarterly Report on Form 10-Q. Moreover, we operate in a very competitive and rapidly changing environment and new risks emerge from time to time. It is not possible for our management to predict all risks, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements we may make. In light of these risks, uncertainties and assumptions, the forward-looking events and circumstances discussed in this Quarterly Report on Form 10-Q may not occur and actual results could differ materially and adversely from those anticipated or implied in the forward-looking statements. Unless the context otherwise requires, the terms "Sunnova," "the Company," "we," "us" and "our" refer to Sunnova Energy International Inc. ("SEI") and its consolidated subsidiaries.

Company Overview

We are a leading residential solar and energy storage service provider, serving more than 91,000 customers in more than 20 United States ("U.S.") states and territories. Our goal is to be the leading provider of clean, affordable and reliable energy for consumers, and we operate with a simple mission: to power energy independence so homeowners have the freedom to live life uninterrupted. We were founded to deliver customers a better energy service at a better price; and, through our solar and solar plus energy storage service offerings, we are disrupting the traditional energy landscape and the way the 21st century customer generates and consumes electricity.

We have a differentiated residential solar dealer model in which we partner with local dealers who originate, design and install our customers' solar energy systems and energy storage systems on our behalf. Our focus on our dealer model enables us to leverage our dealers' specialized knowledge, connections and experience in local markets to drive customer origination while providing our dealers with access to high quality products at competitive prices as well as technical oversight and expertise. We believe this structure provides operational flexibility, reduced exposure to labor shortages and lower fixed costs relative to our peers, furthering our competitive advantage.

We offer customers products to power their homes with affordable solar energy. We are able to offer savings compared to utility-based retail rates with little to no up-front expense to the customer, and we are able to provide savings and energy resiliency to our solar plus energy storage customers. We also make it possible in some states for a customer to obtain a new roof as part of their solar loan. Our solar service agreements take the form of a lease, power purchase agreement ("PPA") or loan. The initial term of our solar service agreements is typically either 10 or 25 years. Service is an integral part of our agreements and includes operations and maintenance, monitoring, repairs and replacements, equipment upgrades, on-site power optimization for the customer (for both supply and demand), the ability to efficiently switch power sources among the solar panel, grid and energy storage system, as appropriate, and diagnostics. During the life of the contract we have the opportunity to integrate related and evolving home servicing and monitoring technologies to upgrade the flexibility and reduce the cost of our customers' energy supply.

In the case of leases and PPAs, we also currently receive tax benefits and other incentives from federal, state and local governments, a portion of which we finance through tax equity, non-recourse debt structures and hedging arrangements in order to fund our upfront costs, overhead and growth investments. We have an established track record of attracting capital from diverse sources. From our inception through June 30, 2020, we have raised more than $5.9 billion in total capital commitments from equity, debt and tax equity investors.

In addition to providing ongoing service as a standard component of our solar service agreements, we also offer Sunnova Protect Services, which provides ongoing energy services to customers who purchased their solar energy system through unaffiliated third parties. Under these arrangements, we agree to provide monitoring, maintenance and repair services to these customers for the life of the service contract they sign with us. We believe the quality and scope of our comprehensive energy service offerings, whether to customers that obtained their solar energy system through us or through another party, is a key differentiator between us and our competitors.

We commenced operations in January 2013 and began providing solar energy services under our first solar energy system in April 2013. Since then, our brand, innovation and focused execution have driven significant, rapid growth in our market

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share and in the number of customers on our platform. We operate one of the largest fleets of residential solar energy systems in the U.S., comprising more than 670 megawatts of generation capacity and serving more than 91,000 customers.

Recent Developments

Coronavirus Disease ("COVID-19") Pandemic

The ongoing COVID-19 pandemic has resulted in widespread adverse impacts on the global economy. Our first priority in our response to this pandemic has been the health and safety of our employees, customers and dealers. To that end, we quickly implemented preventative measures to minimize unnecessary risk of exposure. We have experienced some resulting disruptions to our business operations as the COVID-19 pandemic has continued to spread through the states and U.S. territories in which we operate.

Social distancing guidelines, stay-at-home orders and similar government measures associated with the COVID-19 pandemic, as well as actions by individuals to reduce their potential exposure to the virus, contributed to a decline in origination, with new contract origination, net of cancelations, declining in each of March and April 2020 from the previous month. This decline reflects an inability by our dealers to perform in-person sales calls based on the stay-at-home orders in some locations. To adjust to these government measures, our dealers have expanded the use of digital tools and origination channels and created new methods that offset restrictions on their ability to meet with potential new customers in person. Such efforts drove an increase in new contract origination, net of cancelations, in May and June 2020, with June 2020 exceeding the number of new contracts originated, net of cancelations, in February 2020. We expect the use of websites, video conferencing and other virtual tools as part of our origination process to expand widely and contribute to our future growth. However, local, state or federal government extensions of COVID-19 pandemic response measures may further disrupt the return to in-person sales, which may have a material adverse effect on our business, cash flows, liquidity, financial condition and results of operations due to an inability by our dealers to adjust to virtual sales methods or because such methods prove to be less successful with potential customers.

The service and installation of solar energy systems has continued during the COVID-19 pandemic. This reflects residential solar services' designation as an essential service in all of our service territories. In order to adhere to all applicable state and federal health and safety guidelines, we and our dealers have moved to a contact-free process for installers and service technicians. In addition, an increasing number of authorities having jurisdiction and local utilities are accepting electronic submissions for permits and inspections are being performed in many locations through video calls and other electronic means. We expect our dealers' ability to install and our ability to service solar energy systems will continue in this manner. However, if there are additional outbreaks of the COVID-19 virus or more stringent health and safety guidelines are adopted, our and our dealers' ability to continue performing installations and service calls may be adversely impacted.

Throughout the COVID-19 pandemic, we have seen minimal impact to our supply chain as our technicians and dealers have largely been able to successfully procure the equipment needed to service and install solar energy systems. We have established a geographically diverse group of suppliers, which helps ensure our dealers and customers have access to affordable and effective solar energy and storage options despite potential trade, geopolitical or event-driven risks. Further, we implemented a strategy in 2019, as a result of which the equipment necessary to install and service a significant majority of solar energy systems for the duration of 2020 is already available to us. Currently, we do not anticipate an inability to source parts for our solar energy systems or energy storage systems. However, if supply chains become significantly disrupted due to additional outbreaks of the COVID-19 virus or more stringent health and safety guidelines are implemented, our ability to install and service solar energy systems could become adversely impacted.

As part of our preventative measures to minimize unnecessary risk of exposure and prevent infection, we have continued our work-from-home policy for employees in our Houston headquarters. In May 2020, we re-established critical operations that rely on infrastructure available at headquarters. All employees are required to follow strict social distancing and health safety guidelines in conformity with the restrictions and best practices encouraged by the Centers for Disease Control and Prevention, the World Health Organization and other governmental and regulatory authorities. Throughout the COVID-19 pandemic, our call center has remained open and properly staffed to meet our customers' needs. If a customer requires a visit from a service technician, those technicians are available and in almost all cases can complete the service without entering the customer's home. We are continuing to address concerns to protect the health and safety of our employees and those of our customers and dealers, and this includes changes to comply with health-related guidelines as they are modified and supplemented.

There is considerable uncertainty regarding the extent and duration of governmental and other measures implemented to try to slow the spread of the COVID-19 virus, such as large-scale travel bans and restrictions, border closures, quarantines, shelter-in-place orders and business and government shutdowns. Recently, states that had begun taking steps to reopen their economies

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experienced a subsequent surge in cases of COVID-19, causing these states to cease such reopening measures in some cases and reinstitute restrictions in others. Restrictions of this nature have caused, and may continue to cause, us and our dealers to experience operational delays and may cause milestones or deadlines relating to our exclusivity arrangements to be missed. To date, we have not received notices from our dealers regarding performance delays resulting from the COVID-19 pandemic. However, worsening economic conditions could result in such outcomes over time, which would impact our future financial performance. Further, the effects of the economic downturn associated with the COVID-19 pandemic, and other economic factors, may increase unemployment and reduce consumer credit ratings and credit availability, which may adversely affect new customer origination and our existing customers' ability to make payments on their solar service agreements. Periods of high unemployment and a lack of availability of credit may lead to increased delinquency and default rates. We have not experienced a significant increase in default or delinquency rates to date. However, if existing economic conditions continue for a prolonged period of time or worsen, delinquencies on solar service agreements could increase, which would also negatively impact our future financial performance.

As of the date of this report, our efforts to respond to the challenges presented by the conditions described above to minimize the impacts to our business have yielded encouraging results. However, our future success also depends on our ability to raise capital from third-party investors and commercial sources. In the initial weeks of the COVID-19 pandemic we saw access to capital markets reduced generally. Although the capital markets have not returned to full strength, we have since been able to raise funding during this challenging time. We have recently closed two additional tax equity funds, closed one additional securitization, expanded capacity under one of our existing credit facilities, issued and sold additional convertible senior notes and continue to have access to capacity under certain of our existing tax equity funds and warehouse facilities. If we are unable to regain access to the capital markets or are unable to raise funds through our tax equity and warehouse financing transactions at competitive terms, it would adversely impact both our ability to finance the deployment of our solar energy systems and energy storage systems and our future financial performance.

We cannot predict the full impact the COVID-19 pandemic or the significant disruption and volatility currently being experienced in the capital markets will have on our business, cash flows, liquidity, financial condition and results of operations at this time due to numerous uncertainties. The ultimate impact will depend on future developments, including, among other things, the ultimate geographic spread and duration of the COVID-19 virus, the depth and duration of the economic downturn and other economic effects of the COVID-19 pandemic, the consequences of governmental and other measures designed to prevent the spread of the COVID-19 virus, actions taken by governmental authorities, customers, suppliers, dealers and other third parties, our ability and the ability of our customers, potential customers and dealers to adapt to operating in a changed environment and the timing and extent to which normal economic and operating conditions resume. For additional discussion regarding risks associated with the COVID-19 pandemic, see "Risk Factors" elsewhere in this Quarterly Report on Form 10-Q.

Financing Transactions

In May 2020, we amended the revolving credit facility associated with one of our financing subsidiaries that owns certain tax equity funds to, among other things, (a) increase the aggregate commitment amount from $200.0 million to $390.0 million and (b) increase the unused line fee on such committed amounts. In June 2020, we further amended this revolving credit facility to, among other things, (a) increase the aggregate commitment amount from $390.0 million to $437.5 million, (b) modify the advance rates for solar energy systems and (c) modify the interest rates to an adjusted LIBOR rate plus a weighted average margin of 4.15%. See "—Liquidity and Capital Resources—Financing Arrangements—Warehouse and Other Debt Financings" below.

In May 2020, we admitted a tax equity investor with a total capital commitment of $75.0 million. In July 2020, we admitted a tax equity investor with a total capital commitment of $10.0 million. See "—Liquidity and Capital Resources—Financing Arrangements—Tax Equity Fund Commitments" below.

In May 2020, we issued and sold an aggregate principal amount of $130.0 million of our 9.75% convertible senior notes ("9.75% convertible senior notes") in a private placement at an issue price of 95%, for an aggregate purchase price of $123.5 million. The 9.75% convertible senior notes mature in April 2025 unless earlier redeemed, repurchased or converted. We granted the investors of the 9.75% convertible senior notes an option to purchase up to an additional $60.0 million aggregate principal amount of 9.75% convertible senior notes on the same terms and conditions, and the investors exercised this option and completed the purchase of such additional 9.75% convertible senior notes in June 2020. In May 2020, we also entered into privately negotiated exchanges with a small number of institutional investors in our 7.75% convertible senior notes due January 2027 ("7.75% convertible senior notes") whereby such investors exchanged all $55.0 million aggregate principal amount outstanding of our 7.75% convertible senior notes for an equal principal amount of our 9.75% convertible senior notes. In July 2020, certain of the holders of our 9.75% convertible senior notes converted approximately $10.5 million aggregate principal amount, including accrued and unpaid interest to the date of the conversion, of our 9.75% convertible senior notes into 776,890

34

shares of our common stock. See "—Liquidity and Capital Resources—Financing Arrangements—Convertible Senior Notes" below.

In June 2020, one of our subsidiaries issued $135.9 million in aggregate principal amount of Series 2020-A Class A solar loan-backed notes and $22.6 million in aggregate principal amount of Series 2020-A Class B solar loan-backed notes (collectively, the "HELIV Notes") with a maturity date of June 2047. The HELIV Notes bear interest at an annual rate of 2.98% and 7.25% for the Class A and Class B notes, respectively. See "—Liquidity and Capital Resources—Financing Arrangements—Securitizations" below.

Securitizations

As a source of long-term financing, we securitize qualifying solar energy systems and related solar service agreements into special purpose entities who issue solar asset-backed and solar loan-backed notes to institutional investors. We also securitize the cash flows generated by the membership interests in certain of our indirect, wholly-owned subsidiaries that are the managing member of a tax equity fund that owns a pool of solar energy systems and related solar service agreements that were originated by one of our wholly-owned subsidiaries. The federal government currently provides business investment tax credits under Section 48(a) (the "Section 48(a) ITC") and residential energy credits under Section 25D (the "Section 25D Credit") of the U.S. Internal Revenue Code of 1986, as amended. We do not securitize the Section 48(a) ITC incentives associated with the solar energy systems as part of these arrangements. We use the cash flows these solar energy systems generate to service the monthly, quarterly or semi-annual principal and interest payments on the notes and satisfy the expenses and reserve requirements of the special purpose entities, with any remaining cash distributed to their sole members, who are typically our indirect wholly-owned subsidiaries. In connection with these securitizations, certain of our affiliates receive a fee for managing and servicing the solar energy systems pursuant to management, servicing, facility administration and asset management agreements. The special purpose entities are also typically required to maintain a liquidity reserve account and a reserve account for equipment replacements and, in certain cases, reserve accounts for financing fund purchase option/withdrawal right exercises or storage system replacement for the benefit of the holders under the applicable series of notes, each of which are funded from initial deposits or cash flows to the levels specified therein. The creditors of these special purpose entities have no recourse to our other assets except as expressly set forth in the terms of the notes. From our inception through June 30, 2020, we have issued $1.4 billion in solar asset-backed and solar loan-backed notes.

Tax Equity Funds

Our ability to offer long-term solar service agreements depends in part on our ability to finance the installation of the solar energy systems by co-investing with tax equity investors such as large banks who value the resulting customer receivables and Section 48(a) ITCs, accelerated tax depreciation and other incentives related to the solar energy systems primarily through structured investments known as "tax equity". Tax equity investments are generally structured as non-recourse project financings known as "tax equity funds". In the context of distributed generation solar energy, tax equity investors make contributions upfront or in stages based on milestones in exchange for a share of the tax attributes and cash flows emanating from an underlying portfolio of solar energy systems. In these tax equity funds, the U.S. federal tax attributes offset taxes that otherwise would have been payable on the investors' other operations. The terms and conditions of each tax equity fund vary significantly by investor and by fund. We continue to negotiate with potential investors to create additional tax equity funds.

In general, our tax equity funds are structured using the "partnership flip" structure. Under partnership flip structures, we and our tax equity investors contribute cash into a partnership. The partnership uses this cash to acquire long-term solar service agreements and solar energy systems developed by us and sells energy from such solar energy systems to customers or directly leases the solar energy systems to customers. We assign these solar service agreements, solar energy systems and related incentives to our tax equity funds in accordance with the criteria of the specific funds. Upon such assignment and the satisfaction of certain conditions precedent, we are able to draw down on the tax equity fund commitments. The conditions precedent to funding vary across our tax equity funds but generally require that we have entered into a solar service agreement with the customer, the customer meets certain credit criteria, the solar energy system is expected to be eligible for the Section 48(a) ITC, we have a recent appraisal from an independent appraiser establishing the fair market value of the solar energy system and the property is in an approved state or territory. All the capital contributed by our tax equity investors into the tax equity funds is, depending on the tax equity fund structure, either paid to us to acquire solar energy systems or distributed to us following our contribution of solar energy systems to the tax equity fund. Some tax equity investors have additional criteria that are specific to those tax equity funds. Once received by us, these proceeds are generally used for working capital or capital expenditures to develop and deliver solar energy systems. Each tax equity investor agrees to receive a minimum target rate of return, typically on an after-tax basis, which varies by tax equity fund. Prior to receiving a contractual rate of return or a date specified in the contractual arrangements, the tax equity investor receives substantially all of the non-cash value attributable to the solar energy systems, which includes accelerated depreciation and Section 48(a) ITCs, and a significant portion of the value

35

attributable to customer payments; however, we receive a majority of the cash distributions, which are typically paid quarterly. After the tax equity investor receives its contractual rate of return or after the specified date, we receive substantially all of the cash. Under the partnership flip structure, in part owing to the allocation of depreciation benefits to the investor, the investor's pre-tax return is much lower than the investor's after-tax return.

We have determined we are the primary beneficiary in these partnership flip structures for accounting purposes. Accordingly, we consolidate the assets and liabilities and operating results of these partnerships in our consolidated financial statements. We recognize the tax equity investors' share of the net assets of the tax equity funds as redeemable noncontrolling interests in our consolidated balance sheets. These income or loss allocations, reflected in our consolidated statements of operations, may create significant volatility in our reported results of operations, including potentially changing net loss attributable to stockholders to net income attributable to stockholders, or vice versa, from quarter to quarter.

We typically have an option to acquire, and our tax equity investors may have an option to withdraw and require us to purchase, all the equity interests our tax equity investor holds in the tax equity funds approximately six years after the last solar energy system in each tax equity fund is operational. If we or our tax equity investors exercise this option, we are typically required to pay at least the fair market value of the tax equity investor's equity interest. Following such exercise, we would receive 100% of the customer payments for the remainder of the term of the solar service agreements. From our inception through June 30, 2020, we have received commitments of $524.5 million through the use of tax equity funds, of which an aggregate of $429.0 million has been funded.

Key Financial and Operational Metrics

We regularly review a number of metrics, including the following key operational and financial metrics, to evaluate our business, measure our performance and liquidity, identify trends affecting our business, formulate our financial projections and make strategic decisions.

Number of Customers. We define number of customers to include each customer that is party to an in-service solar service agreement. For our leases, PPAs and loan agreements, in-service means the related solar energy system and, if applicable, energy storage system, must have met all the requirements to begin operation and be interconnected to the electrical grid. For our Sunnova Protect services, in-service means the customer's solar energy system must have met the requirements to have the service activated. We do not include in our number of customers any customer under a lease, PPA or loan agreement that has reached mechanical completion but has not received permission to operate from the local utility or for whom we have terminated the contract and removed the solar energy system. We also do not include in our number of customers any customer of our Sunnova Protect services that has been in default under his or her solar service agreement in excess of six months. We track the total number of customers as an indicator of our historical growth and our rate of growth from period to period.

	As of   June 30, 2020	As of   December 31, 2019	Change
Number of customers	91,600	78,600	13,000

Weighted Average Number of Customers. We calculate the weighted average number of customers based on the number of months a given customer is in-service during a given measurement period. The weighted average customer count reflects the number of customers at the beginning of a period, plus the total number of new customers added in the period adjusted by a factor that accounts for the partial period nature of those new customers. For purposes of this calculation, we assume all new customers added during a month were added in the middle of that month. We track the weighted average customer count in order to accurately reflect the contribution of the appropriate number of customers to key financial metrics over the measurement period.

	Three Months Ended   June 30,		Six Months Ended   June 30,
	2020	2019	2020	2019
Weighted average number of customers (excluding loan agreements)	75,100	58,100	72,700	56,700
Weighted average number of customers with loan agreements	13,300	7,700	12,500	7,200
Weighted average number of customers	88,400	65,800	85,200	63,900

Adjusted EBITDA. We define Adjusted EBITDA as net income (loss) plus net interest expense, depreciation and amortization expense, income tax expense, financing deal costs, natural disaster losses and related charges, net, amortization of payments to dealers for exclusivity and other bonus arrangements, legal settlements and excluding the effect of certain non-

36

recurring items we do not consider to be indicative of our ongoing operating performance such as, but not limited to, costs of our initial public offering ("IPO"), losses on unenforceable contracts, losses on extinguishment of long-term debt, realized and unrealized gains and losses on fair value option instruments and other non-cash items such as non-cash compensation expense, asset retirement obligation ("ARO") accretion expense and provision for current expected credit losses.

Adjusted EBITDA is a non-GAAP financial measure we use as a performance measure. We believe investors and securities analysts also use Adjusted EBITDA in evaluating our operating performance. This measurement is not recognized in accordance with accounting principles generally accepted in the United States of America ("GAAP") and should not be viewed as an alternative to GAAP measures of performance. The GAAP measure most directly comparable to Adjusted EBITDA is net income (loss). The presentation of Adjusted EBITDA should not be construed to suggest our future results will be unaffected by non-cash or non-recurring items. In addition, our calculation of Adjusted EBITDA is not necessarily comparable to Adjusted EBITDA as calculated by other companies.

We believe Adjusted EBITDA is useful to management, investors and analysts in providing a measure of core financial performance adjusted to allow for comparisons of results of operations across reporting periods on a consistent basis. These adjustments are intended to exclude items that are not indicative of the ongoing operating performance of the business. Adjusted EBITDA is also used by our management for internal planning purposes, including our consolidated operating budget, and by our Board in setting performance-based compensation targets. Adjusted EBITDA should not be considered an alternative to but viewed in conjunction with GAAP results, as we believe it provides a more complete understanding of ongoing business performance and trends than GAAP measures alone. Adjusted EBITDA has limitations as an analytical tool, and you should not consider it in isolation or as a substitute for analysis of our results as reported under GAAP.

We use per customer metrics, including Adjusted Operating Expense per weighted average customer (as described below), as an additional way to evaluate our performance. Specifically, we consider the change in these metrics from period to period as a way to evaluate our performance in the context of changes we experience in the overall customer base. While the Adjusted Operating Expense figure provides a valuable indicator of our overall performance, evaluating this metric on a per unit basis allows for further nuanced understanding by management, investors and analysts of the financial impact of each additional customer.

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	Three Months Ended   June 30,				Six Months Ended   June 30,
	2020		2019		2020		2019
	(in thousands)
Reconciliation of Net Loss to Adjusted EBITDA:
Net loss	$	(28,729)	$	(49,807)	$	(105,733)	$	(85,303)
Interest expense, net	30,532		37,310		97,850		68,971
Interest expense, net—affiliates	—		1,575		—		3,397
Interest income	(6,680)		(2,967)		(11,300)		(5,461)
Depreciation expense	15,868		11,627		30,814		22,639
Amortization expense	7		7		16		12
EBITDA	10,998		(2,255)		11,647		4,255
Non-cash compensation expense (1)	3,354		1,884		6,044		2,271
ARO accretion expense	524		327		1,013		640
Financing deal costs	1,571		849		1,687		968
Natural disaster losses and related charges, net	—		—		31		—
IPO costs	—		1,307		—		2,046
Loss on extinguishment of long-term debt, net—affiliates	—		10,645		—		10,645
Unrealized (gain) loss on fair value option instruments	(256)		534		(256)		534
Amortization of payments to dealers for exclusivity and other bonus arrangements	396		14		747		14
Legal settlements	—		293		—		293
Provision for current expected credit losses	1,416		—		3,280		—
Adjusted EBITDA	$	18,003	$	13,598	$	24,193	$	21,666

(1) Amount includes the non-cash effect of equity-based compensation plans of $3.4 million and $0.7 million for the three months ended June 30, 2020 and 2019, respectively, and $6.0 million and $1.0 million for the six months ended June 30, 2020 and 2019, respectively, and partial forgiveness of a loan to an executive officer used to purchase our capital stock of $1.2 million and $1.3 million for the three and six months ended June 30, 2019, respectively.

Interest Income and Principal Payments from Customer Notes Receivable. Under our loan agreements, the customer obtains financing for the purchase of a solar energy system from us and we agree to operate and maintain the solar energy system throughout the duration of the agreement. Pursuant to the terms of the loan agreement, the customer makes scheduled principal and interest payments to us and has the option to prepay principal at any time in part or in full. Whereas we typically recognize payments from customers under our leases and PPAs as revenue, we recognize payments received from customers under our loan agreements (a) as interest income, to the extent attributable to earned interest on the contract that financed the customer's purchase of the solar energy system; (b) as a reduction of a note receivable on the balance sheet, to the extent attributable to a return of principal (whether scheduled or prepaid) on the contract that financed the customer's purchase of the solar energy system; and (c) as revenue, to the extent attributable to payments for operations and maintenance services provided by us.

While Adjusted EBITDA effectively captures the operating performance of our leases and PPAs, it only reflects the service portion of the operating performance under our loan agreements. We do not consider our types of solar service agreements differently when evaluating our operating performance. In order to present a measure of operating performance that provides comparability without regard to the different accounting treatment among our three types of solar service agreements, we consider interest income from customer notes receivable and principal proceeds from customer notes receivable, net of related revenue, as key performance metrics. We believe these two metrics provide a more meaningful and uniform method of analyzing our operating performance when viewed in light of our other key performance metrics across the three primary types of solar service agreements.

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	Three Months Ended   June 30,				Six Months Ended   June 30,
	2020		2019		2020		2019
	(in thousands)
Interest income from customer notes receivable	$	6,568	$	2,692	$	10,940	$	5,020
Principal proceeds from customer notes receivable, net of related revenue	$	7,541	$	5,224	$	13,919	$	8,653

Adjusted Operating Cash Flow. We define Adjusted Operating Cash Flow as net cash used in operating activities plus principal proceeds from customer notes receivable, financed insurance payments and distributions to redeemable noncontrolling interests less derivative breakage fees from financing structure changes, payments to dealers for exclusivity and other bonus arrangements, net inventory and prepaid inventory (sales) purchases and payments of non-capitalized costs related to our IPO. Adjusted Operating Cash Flow is a non-GAAP financial measure we use as a liquidity measure. This measurement is not recognized in accordance with GAAP and should not be viewed as an alternative to GAAP measures of liquidity. The GAAP measure most directly comparable to Adjusted Operating Cash Flow is net cash used in operating activities. We believe Adjusted Operating Cash Flow is a supplemental financial measure useful to management, analysts, investors, lenders and rating agencies as an indicator of our ability to internally fund origination activities, service or incur additional debt and service our contractual obligations. We believe investors and analysts will use Adjusted Operating Cash Flow to evaluate our liquidity and ability to service our contractual obligations. However, Adjusted Operating Cash Flow has limitations as an analytical tool because it does not account for all future expenditures and financial obligations of the business or reflect unforeseen circumstances that may impact our future cash flows, all of which could have a material effect on our financial condition and results from operations. In addition, our calculations of Adjusted Operating Cash Flow are not necessarily comparable to liquidity measures presented by other companies. Investors should not rely on these measures as a substitute for any GAAP measure, including net cash used in operating activities.

	Six Months Ended   June 30,
	2020		2019
	(in thousands)
Reconciliation of Net Cash Used in Operating Activities to Adjusted Operating Cash Flow:
Net cash used in operating activities	$	(82,928)	$	(55,694)
Principal proceeds from customer notes receivable	15,090		9,336
Financed insurance payments	(2,451)		(248)
Derivative breakage fees from financing structure changes	36,894		12,080
Distributions to redeemable noncontrolling interests	(2,600)		(5,143)
Payments to dealers for exclusivity and other bonus arrangements	16,731		22,000
Net inventory and prepaid inventory purchases	18,002		7,147
Adjusted Operating Cash Flow	$	(1,262)	$	(10,522)

Adjusted Operating Expense. We define Adjusted Operating Expense as total operating expense less depreciation and amortization expense, financing deal costs, natural disaster losses and related charges, net, amortization of payments to dealers for exclusivity and other bonus arrangements, legal settlements and excluding the effect of certain non-recurring items we do not consider to be indicative of our ongoing operating performance such as, but not limited to, costs of our IPO, losses on unenforceable contracts and other non-cash items such as non-cash compensation expense, ARO accretion expense and provision for current expected credit losses. Adjusted Operating Expense is a non-GAAP financial measure we use as a performance measure. We believe investors and securities analysts will also use Adjusted Operating Expense in evaluating our performance. This measurement is not recognized in accordance with GAAP and should not be viewed as an alternative to GAAP measures of performance. The GAAP measure most directly comparable to Adjusted Operating Expense is total operating expense. We believe Adjusted Operating Expense is a supplemental financial measure useful to management, analysts, investors, lenders and rating agencies as an indicator of the efficiency of our operations between reporting periods. Adjusted Operating Expense should not be considered an alternative to but viewed in conjunction with GAAP total operating expense, as we believe it provides a more complete understanding of our performance than GAAP measures alone. Adjusted Operating Expense has limitations as an analytical tool and you should not consider it in isolation or as a substitute for analysis of our results as reported under GAAP, including total operating expense.

We use Adjusted Operating Expense per weighted average customer as an additional way to evaluate our performance. Specifically, we consider the change in this metric from period to period as a way to evaluate our performance in the context of

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changes we experience in the overall customer base. While the Adjusted Operating Expense figure provides a valuable indicator of our overall performance, evaluating this metric on a per customer basis provides a more contextualized understanding of our performance to us, investors and analysts of the financial impact of each additional customer.

	Three Months Ended   June 30,				Six Months Ended   June 30,
	2020		2019		2020		2019
	(in thousands, except per customer data)
Reconciliation of Total Operating Expense, Net to Adjusted Operating Expense:
Total operating expense, net	$	47,933	$	37,322	$	92,068	$	68,544
Depreciation expense	(15,868)		(11,627)		(30,814)		(22,639)
Amortization expense	(7)		(7)		(16)		(12)
Non-cash compensation expense	(3,354)		(1,884)		(6,044)		(2,271)
ARO accretion expense	(524)		(327)		(1,013)		(640)
Financing deal costs	(1,571)		(849)		(1,687)		(968)
Natural disaster losses and related charges, net	—		—		(31)		—
IPO costs	—		(1,307)		—		(2,046)
Amortization of payments to dealers for exclusivity and other bonus arrangements	(396)		(14)		(747)		(14)
Legal settlements	—		(293)		—		(293)
Provision for current expected credit losses	(1,416)		—		(3,280)		—
Adjusted Operating Expense	$	24,797	$	21,014	$	48,436	$	39,661
Adjusted Operating Expense per weighted average customer	$	281	$	319	$	568	$	621

Estimated Gross Contracted Customer Value. We calculate estimated gross contracted customer value as defined below. We believe estimated gross contracted customer value can serve as a useful tool for investors and analysts in comparing the remaining value of our customer contracts to that of our peers.

Estimated gross contracted customer value as of a specific measurement date represents the sum of the present value of the remaining estimated future net cash flows we expect to receive from existing customers during the initial contract term of our leases and PPAs, which are typically 25 years in length, plus the present value of future net cash flows we expect to receive from the sale of related solar renewable energy certificates ("SREC"), either under existing contracts or in future sales, plus the carrying value of outstanding customer loans on our balance sheet. From these aggregate estimated initial cash flows, we subtract the present value of estimated net cash distributions to redeemable noncontrolling interests and estimated operating, maintenance and administrative expenses associated with the solar service agreements. These estimated future cash flows reflect the projected monthly customer payments over the life of our solar service agreements and depend on various factors including but not limited to solar service agreement type, contracted rates, expected sun hours and the projected production capacity of the solar equipment installed. For the purpose of calculating this metric, we discount all future cash flows at 6%.

The anticipated operating, maintenance and administrative expenses included in the calculation of estimated gross contracted customer value include, among other things, expenses related to accounting, reporting, audit, insurance, maintenance and repairs. In the aggregate, we estimate these expenses are $20 per kilowatt per year initially, with 2% annual increases for inflation, and an additional $81 per year non-escalating expense included for energy storage systems. We do not include maintenance and repair costs for inverters and similar equipment as those are largely covered by the applicable product and dealer warranties for the life of the product, but we do include additional cost for energy storage systems, which are only covered by a 10-year warranty. Expected distributions to tax equity investors vary among the different tax equity funds and are based on individual tax equity fund contract provisions.

Estimated gross contracted customer value is forecasted as of a specific date. It is forward-looking and we use judgment in developing the assumptions used to calculate it. Factors that could impact estimated gross contracted customer value include, but are not limited to, customer payment defaults, or declines in utility rates or early termination of a contract in certain circumstances, including prior to installation. The following table presents the calculation of estimated gross contracted customer value as of June 30, 2020 and December 31, 2019, calculated using a 6% discount rate.

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	As of   June 30, 2020		As of   December 31, 2019
	(in millions)
Estimated gross contracted customer value	$	2,194	$	1,879

Sensitivity Analysis. The calculation of estimated gross contracted customer value and associated operational metrics requires us to make a number of assumptions regarding future revenues and costs which may not prove accurate. Accordingly, we present below a sensitivity analysis with a range of assumptions. We consider a discount rate of 6% to be appropriate based on industry practice and recent transactions that demonstrate a portfolio of residential solar service agreements is an asset class that can be securitized successfully on a long-term basis, with a coupon of less than 6%. The appropriate discount rate for these estimates may change in the future due to the level of inflation, rising interest rates, our cost of capital and consumer demand for solar energy systems. In addition, the table below provides a range of estimated gross contracted customer value amounts if different cumulative customer loss rate assumptions were used. We are presenting this information for illustrative purposes only and as a comparison to information published by our peers.

Estimated Gross Contracted Customer Value
	As of June 30, 2020
	Discount rate
Cumulative customer loss rate	4%		6%		8%
	(in millions)
5%	$	2,492	$	2,161	$	1,907
0%	$	2,534	$	2,194	$	1,933

Significant Factors and Trends Affecting Our Business

Our results of operations and our ability to grow our business over time could be impacted by a number of factors and trends that affect our industry generally, as well as new offerings of services and products we may acquire or seek to acquire in the future. Additionally, our business is concentrated in certain markets, putting us at risk of region-specific disruptions such as adverse economic, regulatory, political, weather and other conditions. See "Risk Factors" in our Annual Report on Form 10-K filed with the SEC on February 25, 2020 and in this Quarterly Report on Form 10-Q for further discussion of risks affecting our business.

Financing Availability. Our future growth depends, in significant part, on our ability to raise capital from third-party investors on competitive terms to help finance the origination of our solar energy systems under our solar service agreements. We have historically used debt, such as convertible senior notes, asset-backed and loan-backed securitizations and warehouse facilities, tax equity, preferred equity and other financing strategies to help fund our operations. From our inception through June 30, 2020, we have raised more than $5.9 billion in total capital commitments from equity, debt and tax equity investors. With respect to tax equity, there are a limited number of potential tax equity investors and the competition for this investment capital is intense. The principal tax credit on which tax equity investors in our industry rely is the Section 48(a) ITC. The amount for the Section 48(a) ITC is equal to 30% of the basis of eligible solar property that began construction before 2020 if placed in service before 2024. By statute, the Section 48(a) ITC percentage decreases to 26% for eligible solar property that begins construction during 2020, 22% for 2021 and 10% if construction begins after 2021 or if the property is placed into service after 2023. This reduction in the Section 48(a) ITC will likely reduce our use of tax equity financing in the future unless the Section 48(a) ITC is increased or replaced. Internal Revenue Service guidance includes a safe harbor that may apply when a taxpayer (or in certain cases, a contractor) pays or incurs 5% or more of the costs of a solar energy system before the end of the applicable year (the "5% ITC Safe Harbor"), even though the solar energy system is not placed in service until after the end of that year. For installations in 2020, we have purchased substantially all the inverters that will be deployed under our lease and PPA agreements that we expect will allow the related solar energy systems to qualify for the 30% Section 48(a) ITC by satisfying the 5% ITC Safe Harbor. We may make further inventory purchases in future periods to extend the availability of each period's Section 48(a) ITC. Our ability to raise capital from third-party investors is affected by general economic conditions, the state of the capital markets, inflation levels and concerns about our industry or business.

Cost of Solar Energy Systems. Although the solar panel market has seen an increase in supply, upward pressure on prices may occur due to growth in the solar industry, regulatory policy changes, tariffs and duties and an increase in demand. As a result of these developments, we may pay higher prices on imported solar modules, which may make it less economical for us to serve certain markets. Attachment rates for energy storage systems have trended higher while the price to acquire has trended downward making the addition of energy storage systems a potential area of growth for us.

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Energy Storage Systems. Our energy storage systems increase our customers' independence from the centralized utility and provide on-site backup power when there is a grid outage due to storms, wildfires, other natural disasters and general power failures caused by supply or transmission issues. In addition, at times it can be more economic to consume less energy from the grid or, alternatively, to export solar energy back to the grid. Recent technological advancements for energy storage systems allow the energy storage system to adapt to pricing and utility rate shifts by controlling the inflows and outflows of power, allowing customers to increase the value of their solar energy system plus energy storage system. The energy storage system charges during the day, making the energy it stores available to the home when needed. It also features software that can customize power usage for the individual customer, providing backup power, optimizing solar energy consumption versus grid consumption or preventing export to the grid as appropriate. The software is tailored based on utility regulation, economic indicators and grid conditions. The combination of energy control, increased energy resilience and independence from the grid is strong incentive for customers to adopt solar and energy storage. As energy storage systems and their related software features become more advanced, we expect to see increased adoption of energy storage systems.

Government Regulations, Policies and Incentives. Our growth strategy depends in significant part on government policies and incentives that promote and support solar energy and enhance the economic viability of distributed residential solar. These incentives come in various forms, including net metering, eligibility for accelerated depreciation such as the modified accelerated cost recovery system, SRECs, tax abatements, rebates, renewable targets, incentive programs and tax credits, particularly the Section 48(a) ITC and the Section 25D Credit. Policies requiring solar on new homes or new roofs, such as those enacted in California and New York City, also support the growth of distributed solar. The sale of SRECs has constituted a significant portion of our revenue historically. A change in the value of SRECs or changes in other policies or a loss or reduction in such incentives could decrease the attractiveness of distributed residential solar to us, our dealers and our customers in applicable markets, which could reduce our customer acquisition opportunities. Such a loss or reduction could also reduce our willingness to pursue certain customer acquisitions due to decreased revenue or income under our solar service agreements. Additionally, such a loss or reduction may also impact the terms of and availability of third-party financing. If any of these government regulations, policies or incentives are adversely amended, delayed, eliminated, reduced, retroactively changed or not extended beyond their current expiration dates or there is a negative impact from the recent federal law changes or proposals, our operating results and the demand for, and the economics of, distributed residential solar energy may decline, which could harm our business.

Components of Results of Operations

Revenue. We recognize revenue from contracts with customers as we satisfy our performance obligations at a transaction price reflecting an amount of consideration based upon an estimated rate of return. We express this rate of return as the solar rate per kilowatt hour ("kWh") in the customer contract. The amount of revenue we recognize does not equal customer cash payments because we satisfy performance obligations ahead of cash receipt or evenly as we provide continuous access on a stand-ready basis to the solar energy system. We reflect the differences between revenue recognition and cash payments received in accounts receivable, other assets or deferred revenue, as appropriate.

PPAs. We have determined solar service agreements under which customers purchase electricity from us should be accounted for as revenue from contracts with customers. We recognize revenue based upon the amount of electricity delivered as determined by remote monitoring equipment at solar rates specified under the contracts. The PPAs generally have a term of 25 years with an opportunity for customers to renew for up to an additional 10 years, via two five-year renewal options.

Lease Agreements. We are the lessor under lease agreements for solar energy systems and energy storage systems, which we account for as revenue from contracts with customers. We recognize revenue on a straight-line basis over the contract term as we satisfy our obligation to provide continuous access to the solar energy system. The lease agreements generally have a term of 25 years with an opportunity for customers to renew for up to an additional 10 years, via two five-year renewal options.

We provide customers under our lease agreements a performance guarantee that each solar energy system will achieve a certain specified minimum solar energy production output. The specified minimum solar energy production output may not be achieved due to natural fluctuations in the weather or equipment failures from exposure and wear and tear outside of our control, among other factors. We determine the amount of guaranteed output based on a number of different factors, including (a) the specific site information relating to the tilt of the panels, azimuth (a horizontal angle measured clockwise in degrees from a reference direction) of the panels, size of the solar energy system and shading on site; (b) the calculated amount of available irradiance (amount of energy for a given flat surface facing a specific direction) based on historical average weather data and (c) the calculated amount of energy output of the solar energy system.

If the solar energy system does not produce the guaranteed production amount, we are required to provide a bill credit or

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refund a portion of the previously remitted customer payments, where the bill credit or repayment is calculated as the product of (a) the shortfall production amount and (b) the dollar amount (guaranteed rate) per kWh that is fixed throughout the term of the contract. These bill credits or remittances of a customer's payments, if needed, are payable in January following the end of the first three years of the solar energy system's placed in service date and then every annual period thereafter. See Note 14, Commitments and Contingencies, to our interim unaudited condensed consolidated financial statements ("interim financial statements") included elsewhere in this Quarterly Report on Form 10-Q.

Loan Agreements. We recognize payments received from customers under loan agreements (a) as interest income, to the extent attributable to earned interest on the contract that financed the customer's purchase of the solar energy system; (b) as a reduction of a note receivable on the balance sheet, to the extent attributable to a return of principal (whether scheduled or prepaid) on the contract that financed the customer's purchase of the solar energy system; and (c) as revenue, to the extent attributable to payments for operations and maintenance services provided by us. Similar to our lease agreements, we provide customers under our loan agreements a performance guarantee that each solar energy system will achieve a certain specified minimum solar energy production output, which is a significant proportion of its expected output.

SRECs. Each SREC represents one megawatt hour (1,000 kWh) generated by a solar energy system. We sell SRECs to utilities and other third parties who use the SRECs to meet renewable portfolio standards and can do so with or without the actual electricity associated with the renewable-based generation source. We account for SRECs generated from solar energy systems owned by us, as opposed to those owned by our customers, as governmental incentives with no costs incurred to obtain them and do not consider those SRECs output of the underlying solar energy systems. We classify SRECs as inventory held until sold and delivered to third parties. We enter into economic hedges with major financial institutions related to expected production of SRECs through forward contracts to partially mitigate the risk of decreases in SREC market rates. The contracts require us to physically deliver the SRECs upon settlement. We recognize the related revenue upon the transfer of the SRECs to the counterparty. The costs related to the sales of SRECs are generally limited to fees for brokered transactions. Accordingly, the sale of SRECs in a period generally has a favorable impact on our operating results for that period. In certain circumstances we are required to purchase SRECs on the open market to fulfill minimum delivery requirements under our forward contracts.

Other Revenue. Other revenue includes certain state incentives, revenue from the direct sale of energy storage systems to customers and sales of service plans. We recognize revenue from state incentives in the periods in which they are earned. We recognize revenue from the direct sale of energy storage systems in the period in which the storage components are placed in service. Service plans are available to customers whose solar energy system was not originally sold by Sunnova. We recognize revenue from service plan contracts over the life of the contract, which is typically five years.

Cost of Revenue—Depreciation. Cost of revenue—depreciation represents depreciation on solar energy systems under lease agreements and PPAs that have been placed in service.

Cost of Revenue—Other. Cost of revenue—other represents costs to purchase SRECs on the open market, SREC broker fees and other items deemed to be a cost of providing the service of selling power to customers or potential customers, such as certain costs to service loan agreements, costs for filing under the Uniform Commercial Code to maintain title, title searches, credit checks on potential customers at the time of initial contract and other similar costs, typically directly related to the volume of customers and potential customers.

Operations and Maintenance Expense. Operations and maintenance expense represents costs paid to third parties for maintaining and servicing the solar energy systems, property insurance and property taxes. In addition, operations and maintenance expense includes impairments due to natural disaster losses net of insurance proceeds recovered under our business interruption and property damage insurance coverage for natural disasters, write downs and write-offs related to inventory adjustments, losses on disposals and other impairments.

General and Administrative Expense. General and administrative expense represents costs for our employees, such as salaries, bonuses, benefits and all other employee-related costs, including stock-based compensation, professional fees related to legal, accounting, human resources, finance and training, information technology and software services, marketing and communications, travel and rent and other office-related expenses. General and administrative expense also includes depreciation on assets not classified as solar energy systems, including information technology software and development projects, vehicles, furniture, fixtures, computer equipment and leasehold improvements and accretion expense on AROs. We capitalize a portion of general and administrative costs, such as payroll-related costs, that is related to employees who are directly involved in the design, construction, installation and testing of the solar energy systems but not directly associated with a particular asset. We also capitalize a portion of general and administrative costs, such as payroll-related costs, that is related to employees who are directly associated with and devote time to internal information technology software and development projects, to the extent of the time spent directly on the application and development stage of such software project.

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Interest Expense, Net. Interest expense, net represents interest on our borrowings under our various debt facilities and amortization of debt discounts and deferred financing costs.

Interest Expense, Net—Affiliates. Interest expense, net—affiliates represents interest expense on our debt facilities, including the amortization of the debt discounts, held by our affiliates.

Interest Income. Interest income represents interest income from the notes receivable under our loan program and income on short term investments with financial institutions.

Income Tax. We account for income taxes under Accounting Standards Codification 740, Income Taxes. As such, we determine deferred tax assets and liabilities based on temporary differences resulting from the different treatment of items for tax and financial reporting purposes. We measure deferred tax assets and liabilities using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to reverse. Additionally, we must assess the likelihood that deferred tax assets will be recovered as deductions from future taxable income. We have a full valuation allowance on our deferred tax assets because we believe it is more likely than not that our deferred tax assets will not be realized. We evaluate the recoverability of our deferred tax assets on a quarterly basis. Currently, there is no provision or benefit for income taxes as we have incurred losses to date.

Net Income (Loss) Attributable to Redeemable Noncontrolling Interests. Net income (loss) attributable to redeemable noncontrolling interests represents third-party interests in the net assets of certain consolidated subsidiaries.

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Results of Operations—Three Months Ended June 30, 2020 Compared to Three Months Ended June 30, 2019

The following table sets forth our unaudited condensed consolidated statements of operations data for the periods indicated.

	Three Months Ended   June 30,
	2020		2019		Change
	(in thousands)
Revenue	$	42,790	$	34,612	$	8,178
Operating expense:
Cost of revenue—depreciation	14,021		10,225		3,796
Cost of revenue—other	2,869		1,076		1,793
Operations and maintenance	2,926		2,289		637
General and administrative	28,133		23,794		4,339
Other operating income	(16)		(62)		46
Total operating expense, net	47,933		37,322		10,611
Operating loss	(5,143)		(2,710)		(2,433)
Interest expense, net	30,532		37,310		(6,778)
Interest expense, net—affiliates	—		1,575		(1,575)
Interest income	(6,680)		(2,967)		(3,713)
Loss on extinguishment of long-term debt, net—affiliates	—		10,645		(10,645)
Other (income) expense	(266)		534		(800)
Loss before income tax	(28,729)		(49,807)		21,078
Income tax	—		—		—
Net loss	(28,729)		(49,807)		21,078
Net income (loss) attributable to redeemable noncontrolling interests	(3,471)		931		(4,402)
Net loss attributable to stockholders	$	(25,258)	$	(50,738)	$	25,480

Revenue

	Three Months Ended   June 30,
	2020		2019		Change
	(in thousands)
PPA revenue	$	19,922	$	13,954	$	5,968
Lease revenue	12,338		9,620		2,718
SREC revenue	8,735		9,716		(981)
Loan revenue	634		363		271
Other revenue	1,161		959		202
Total	$	42,790	$	34,612	$	8,178

Revenue increased by $8.2 million in the three months ended June 30, 2020 compared to the three months ended June 30, 2019 primarily as a result of an increased number of solar energy systems in service. The weighted average number of customers (excluding customers with loan agreements) increased from approximately 58,100 for the three months ended June 30, 2019 to approximately 75,100 for the three months ended June 30, 2020. Excluding SREC revenue and revenue under our loan agreements, on a weighted average number of customers basis, revenue increased from $422 per customer for the three months ended June 30, 2019 to $445 per customer for the same period in 2020 (5% increase). SREC revenue decreased by $1.0

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million in the three months ended June 30, 2020 compared to the three months ended June 30, 2019 primarily due to (a) lower SREC pricing in New Jersey and (b) a Massachusetts forward sale that occurred during the fourth quarter of 2019. These decreases were offset by (a) an increase in SREC revenue resulting from higher Massachusetts volumes and (b) a Massachusetts forward sale that occurred during the first quarter of 2019. The fluctuations in SREC revenue from period to period are also affected by the total number of solar energy systems, weather seasonality and hedge and spot prices associated with the timing of the sale of SRECs. On a weighted average number of customers basis, revenues under our loan agreements remained relatively flat at $47 per customer for the three months ended June 30, 2019 compared to $48 per customer for the same period in 2020 (1% increase).

Cost of Revenue—Depreciation

	Three Months Ended   June 30,
	2020		2019		Change
	(in thousands)
Cost of revenue—depreciation	$	14,021	$	10,225	$	3,796

Cost of revenue—depreciation increased by $3.8 million in the three months ended June 30, 2020 compared to the three months ended June 30, 2019. This increase was primarily driven by an increase in the weighted average number of customers (excluding customers with loan agreements) from approximately 58,100 for the three months ended June 30, 2019 to approximately 75,100 for the three months ended June 30, 2020. On a weighted average number of customers basis, cost of revenue—depreciation increased from $176 per customer for the three months ended June 30, 2019 to $187 per customer for the same period in 2020 (6% increase).

Cost of Revenue—Other

	Three Months Ended   June 30,
	2020		2019		Change
	(in thousands)
Cost of revenue—other	$	2,869	$	1,076	$	1,793

Cost of revenue—other increased by $1.8 million in the three months ended June 30, 2020 compared to the three months ended June 30, 2019. This increase was primarily driven by the purchase of SRECs of $1.9 million to fulfill minimum delivery requirements under our forward contracts.

Operations and Maintenance Expense

	Three Months Ended   June 30,
	2020		2019		Change
	(in thousands)
Operations and maintenance	$	2,926	$	2,289	$	637

Operations and maintenance expense increased by $0.6 million in the three months ended June 30, 2020 compared to the three months ended June 30, 2019 primarily due to higher impairments and loss on disposals. Operations and maintenance expense per customer, excluding net natural disaster losses, remained relatively flat at $39 per customer for the three months ended June 30, 2020 and 2019.

General and Administrative Expense

	Three Months Ended   June 30,
	2020		2019		Change
	(in thousands)
General and administrative	$	28,133	$	23,794	$	4,339

General and administrative expense increased by $4.3 million in the three months ended June 30, 2020 compared to the three months ended June 30, 2019 due to increases of (a) $2.8 million of payroll and employee related expenses primarily due

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to non-cash compensation expense and the hiring of personnel to support growth and (b) $1.6 million of insurance expenses.

Interest Expense, Net

	Three Months Ended   June 30,
	2020		2019		Change
	(in thousands)
Interest expense, net	$	30,532	$	37,310	$	(6,778)

Interest expense, net decreased by $6.8 million in the three months ended June 30, 2020 compared to the three months ended June 30, 2019. This decrease was primarily driven by increases in unrealized gain on interest rate swaps of $13.5 million, partially offset by an increase in interest expense of $6.6 million due to an increase in the principal debt balance after entering into new financing arrangements.

Interest Expense, Net—Affiliates

	Three Months Ended   June 30,
	2020		2019		Change
	(in thousands)
Interest expense, net—affiliates	$	—	$	1,575	$	(1,575)

Interest expense, net—affiliates decreased by $1.6 million in the three months ended June 30, 2020 compared to the three months ended June 30, 2019 primarily due a decrease in interest expense due to the redemption of the senior secured notes and conversion of the convertible notes in July 2019.

Interest Income

	Three Months Ended   June 30,
	2020		2019		Change
	(in thousands)
Interest income	$	6,680	$	2,967	$	3,713

Interest income increased by $3.7 million in the three months ended June 30, 2020 compared to the three months ended June 30, 2019. This increase was primarily driven by an increase in the weighted average number of customers with loan agreements from approximately 7,700 for the three months ended June 30, 2019 to approximately 13,300 for the three months ended June 30, 2020. On a weighted average number of customers basis, loan interest income increased from $349 per customer for the three months ended June 30, 2019 to $494 per customer for the three months ended June 30, 2020 primarily due to higher average loan storage balances.

Loss on Extinguishment of Long-Term Debt, Net—Affiliates

Loss on extinguishment of long-term debt, net—affiliates decreased by $10.6 million in the three months ended June 30, 2020 compared to the three months ended June 30, 2019 due to the amendment of the senior secured notes in April 2019 that met the criteria for extinguishment accounting under GAAP.

Income Tax

We do not have income tax expense or benefit due to pre-tax losses and a full valuation allowance recorded for the three months ended June 30, 2020 and 2019. See "—Components of Results of Operations—Income Tax".

Net Income (Loss) Attributable to Redeemable Noncontrolling Interests

Net income (loss) attributable to redeemable noncontrolling interests changed by $4.4 million in the three months ended June 30, 2020 compared to the three months ended June 30, 2019 primarily due to a loss attributable to redeemable noncontrolling interests from a tax equity fund added in late 2019.

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Results of Operations—Six Months Ended June 30, 2020 Compared to Six Months Ended June 30, 2019

The following table sets forth our unaudited condensed consolidated statements of operations data for the periods indicated.

	Six Months Ended   June 30,
	2020		2019		Change
	(in thousands)
Revenue	$	72,619	$	61,327	$	11,292
Operating expense:
Cost of revenue—depreciation	27,007		19,878		7,129
Cost of revenue—other	3,912		1,728		2,184
Operations and maintenance	5,145		4,543		602
General and administrative	56,026		42,475		13,551
Other operating income	(22)		(80)		58
Total operating expense, net	92,068		68,544		23,524
Operating loss	(19,449)		(7,217)		(12,232)
Interest expense, net	97,850		68,971		28,879
Interest expense, net—affiliates	—		3,397		(3,397)
Interest income	(11,300)		(5,461)		(5,839)
Loss on extinguishment of long-term debt, net—affiliates	—		10,645		(10,645)
Other (income) expense	(266)		534		(800)
Loss before income tax	(105,733)		(85,303)		(20,430)
Income tax	—		—		—
Net loss	(105,733)		(85,303)		(20,430)
Net income (loss) attributable to redeemable noncontrolling interests	(9,400)		3,949		(13,349)
Net loss attributable to stockholders	$	(96,333)	$	(89,252)	$	(7,081)

Revenue

	Six Months Ended   June 30,
	2020		2019		Change
	(in thousands)
PPA revenue	$	32,555	$	23,566	$	8,989
Lease revenue	23,880		19,258		4,622
SREC revenue	13,098		16,308		(3,210)
Loan revenue	1,233		734		499
Other revenue	1,853		1,461		392
Total	$	72,619	$	61,327	$	11,292

Revenue increased by $11.3 million in the six months ended June 30, 2020 compared to the six months ended June 30, 2019 primarily as a result of an increased number of solar energy systems in service. The weighted average number of customers (excluding customers with loan agreements) increased from approximately 56,700 for the six months ended June 30, 2019 to approximately 72,700 for the six months ended June 30, 2020. Excluding SREC revenue and revenue under our loan agreements, on a weighted average number of customers basis, revenue remained relatively flat at $781 per customer for the six months ended June 30, 2019 compared to $802 per customer for the same period in 2020 (3% increase). SREC revenue

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decreased by $3.2 million in the six months ended June 30, 2020 compared to the six months ended June 30, 2019 primarily due to (a) a $3.0 million Massachusetts forward sale that occurred during the fourth quarter of 2019 and (b) lower SREC pricing in New Jersey. These decreases were offset by an increase in SREC revenues resulting from higher Massachusetts volumes. The fluctuations in SREC revenue from period to period are also affected by the total number of solar energy systems, weather seasonality and hedge and spot prices associated with the timing of the sale of SRECs. On a weighted average number of customers basis, revenues under our loan agreements remained relatively flat at $102 per customer for the six months ended June 30, 2019 compared to $99 per customer for the same period in 2020 (3% decrease).

Cost of Revenue—Depreciation

	Six Months Ended   June 30,
	2020		2019		Change
	(in thousands)
Cost of revenue—depreciation	$	27,007	$	19,878	$	7,129

Cost of revenue—depreciation increased by $7.1 million in the six months ended June 30, 2020 compared to the six months ended June 30, 2019. This increase was primarily driven by an increase in the weighted average number of customers (excluding customers with loan agreements) from approximately 56,700 for the six months ended June 30, 2019 to approximately 72,700 for the six months ended June 30, 2020. On a weighted average number of customers basis, cost of revenue—depreciation increased from $351 per customer for the six months ended June 30, 2019 to $371 per customer for the same period in 2020 (6% increase).

Cost of Revenue—Other

	Six Months Ended   June 30,
	2020		2019		Change
	(in thousands)
Cost of revenue—other	$	3,912	$	1,728	$	2,184

Cost of revenue—other increased by $2.2 million in the six months ended June 30, 2020 compared to the six months ended June 30, 2019. This increase was primarily driven by the purchase of SRECs of $1.9 million to fulfill minimum delivery requirements under our forward contracts.

Operations and Maintenance Expense

	Six Months Ended   June 30,
	2020		2019		Change
	(in thousands)
Operations and maintenance	$	5,145	$	4,543	$	602

Operations and maintenance expense increased by $0.6 million in the six months ended June 30, 2020 compared to the six months ended June 30, 2019 primarily due to higher impairments and loss on disposals. Operations and maintenance expense per customer, excluding net natural disaster losses, decreased to $70 per customer for the six months ended June 30, 2020 compared to $80 per customer for the six months ended June 30, 2019 as a result of operational efficiencies.

General and Administrative Expense

	Six Months Ended   June 30,
	2020		2019		Change
	(in thousands)
General and administrative	$	56,026	$	42,475	$	13,551

General and administrative expense increased by $13.6 million in the six months ended June 30, 2020 compared to the six months ended June 30, 2019 primarily due to increases of (a) $7.2 million of payroll and employee related expenses primarily due to non-cash compensation expense and the hiring of personnel to support growth, (b) $3.4 million of insurance expenses

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and (c) $3.3 million of provision for current expected credit losses related to the adoption of the new accounting standard in 2020.

Interest Expense, Net

	Six Months Ended   June 30,
	2020		2019		Change
	(in thousands)
Interest expense, net	$	97,850	$	68,971	$	28,879

Interest expense, net increased by $28.9 million in the six months ended June 30, 2020 compared to the six months ended June 30, 2019. This increase was primarily driven by increases in realized loss on interest rate swaps of $25.6 million due to the termination of certain debt facilities in 2020, interest expense of $12.3 million due to an increase in the principal debt balance after entering into new financing arrangements and debt discount amortization of $6.3 million. This increase was partially offset by a decrease in unrealized loss on interest rate swaps of $12.9 million.

Interest Expense, Net—Affiliates

	Six Months Ended   June 30,
	2020		2019		Change
	(in thousands)
Interest expense, net—affiliates	$	—	$	3,397	$	(3,397)

Interest expense, net—affiliates decreased by $3.4 million in the six months ended June 30, 2020 compared to the six months ended June 30, 2019 primarily due to a decrease in interest expense due to the redemption of the senior secured notes and conversion of the convertible notes in July 2019.

Interest Income

	Six Months Ended   June 30,
	2020		2019		Change
	(in thousands)
Interest income	$	11,300	$	5,461	$	5,839

Interest income increased by $5.8 million in the six months ended June 30, 2020 compared to the six months ended June 30, 2019. This increase was primarily driven by an increase in the weighted average number of customers with loan agreements from approximately 7,200 for the six months ended June 30, 2019 to approximately 12,500 for the six months ended June 30, 2020. On a weighted average number of customers basis, loan interest income increased from $697 per customer for the six months ended June 30, 2019 to $875 per customer for the six months ended June 30, 2020 primarily due to higher average loan storage balances.

Loss on Extinguishment of Long-Term Debt, Net—Affiliates

Loss on extinguishment of long-term debt, net—affiliates decreased by $10.6 million in the six months ended June 30, 2020 compared to the six months ended June 30, 2019 due to the amendment of the senior secured notes in April 2019 that met the criteria for extinguishment accounting under GAAP.

Income Tax

We do not have income tax expense or benefit due to pre-tax losses and a full valuation allowance recorded for the six months ended June 30, 2020 and 2019. See "—Components of Results of Operations—Income Tax".

Net Income (Loss) Attributable to Redeemable Noncontrolling Interests

Net income (loss) attributable to redeemable noncontrolling interests changed by $13.3 million in the six months ended June 30, 2020 compared to the six months ended June 30, 2019 primarily due to a loss attributable to redeemable

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noncontrolling interests from a tax equity fund added in late 2019.

Liquidity and Capital Resources

As of June 30, 2020, we had total cash of $184.4 million, of which $102.3 million was unrestricted, and $402.3 million of available borrowing capacity under our various financing arrangements. We seek to maintain diversified and cost-effective funding sources to finance and maintain our operations, fund capital expenditures, including customer acquisitions, and satisfy obligations arising from our indebtedness. Historically, our primary sources of liquidity included non-recourse and recourse debt, investor asset-backed and loan-backed securitizations and cash generated from operations. Our business model requires substantial outside financing arrangements to grow the business and facilitate the deployment of additional solar energy systems. We will seek to raise additional required capital, including from new and existing tax equity investors, additional borrowings, securitizations and other potential debt and equity financing sources. As of June 30, 2020, we were in compliance with all debt covenants under our financing arrangements.

Additionally, from time-to-time we evaluate the potential acquisition of solar energy systems, energy storage systems and related businesses and joint ventures. As a part of these efforts, we may engage in discussions with potential sellers or other parties regarding the possible purchase of or investment in assets and operations that are strategic and complementary to our existing operations. In addition, we have in the past evaluated and pursued, and may in the future evaluate and pursue, the acquisition of or investment in other energy-related assets that have characteristics and opportunities similar to our existing business lines and enable us to leverage our assets, knowledge and skill sets. Such efforts may involve participation by us in processes that have been made public and involve a number of potential buyers or investors, commonly referred to as "auction" processes, as well as situations in which we believe we are the only party or one of a limited number of parties who are in negotiations with the potential seller or other party. These acquisition and investment efforts may involve assets which, if acquired or constructed, could have a material effect on our financial condition and results of operations.

We expect our solar energy systems in service to generate a positive return rate over the customer agreement, typically 25 years. Typically, once residential solar energy systems commence operations, they do not require significant additional capital expenditures to maintain operating performance. However, in order to grow, we are currently dependent on financing from outside parties. We believe we will have sufficient cash, investment fund commitments and securitization commitments, as described below, together with cash flows from operations to meet our working capital, debt service obligations, contingencies and anticipated required capital expenditures, including customer acquisitions, for at least the next 12 months. However, we are subject to business and operational risks that could adversely affect our ability to raise additional financing. If financing is not available to us on acceptable terms if and when needed, we may be unable to finance installation of our new customers' solar energy systems in a manner consistent with our past performance, our cost of capital could increase, or we may be required to significantly reduce the scope of our operations, any of which would have a material adverse effect on our business, financial condition, results of operations and prospects. In addition, our tax equity funds and debt instruments impose restrictions on our ability to draw on financing commitments. If we are unable to satisfy such conditions, we may incur penalties for non-performance under certain tax equity funds, experience installation delays, or be unable to make installations in accordance with our plans or at all. Any of these factors could also impact customer satisfaction, our business, operating results, prospects and financial condition.

Financing Arrangements

The following is an update to the description of our various financing arrangements. See "Management's Discussion and Analysis of Financial Condition and Results of Operations—Liquidity and Capital Resources—Financing Arrangements" in our Annual Report on Form 10-K filed with the SEC on February 25, 2020 for a full description of our various financing arrangements.

Tax Equity Fund Commitments

As of June 30, 2020, we had undrawn committed capital of approximately $80.4 million under our tax equity funds, which may only be used to purchase and install solar energy systems. We intend to establish new tax equity funds in the future depending on their attractiveness, including the availability and size of Section 48(a) ITCs and related safe harbors, and on the investor demand for such funding. In February 2020, we admitted a tax equity investor with a total capital commitment of $75.0 million. In May 2020, we admitted a tax equity investor with a total capital commitment of $75.0 million. In July 2020, we admitted a tax equity investor with a total capital commitment of $10.0 million.

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Securitizations

In February 2020, one of our subsidiaries issued $337.1 million in aggregate principal amount of Series 2020-1 Class A solar asset-backed notes and $75.4 million in aggregate principal amount of Series 2020-1 Class B solar asset-backed notes (collectively, the "SOLI Notes") with a maturity date of January 2055. The SOLI Notes bear interest at an annual rate of 3.35% and 5.54% for the Class A and Class B notes, respectively.

In June 2020, one of our subsidiaries issued $135.9 million in aggregate principal amount of Series 2020-A Class A solar loan-backed notes and $22.6 million in aggregate principal amount of Series 2020-A Class B solar loan-backed notes with a maturity date of June 2047. The HELIV Notes bear interest at an annual rate of 2.98% and 7.25% for the Class A and Class B notes, respectively.

Warehouse and Other Debt Financings

In February 2020, two of our subsidiaries fully repaid the aggregate principal amounts outstanding under their financing arrangements of $92.0 million and $226.6 million using proceeds from the SOLI Notes, all related interest rate swaps were unwound and the debt facilities were terminated. In addition, one of our subsidiaries used proceeds from the SOLI Notes to repay $32.0 million in aggregate principal amount outstanding under its financing arrangement. In May 2020, we amended the revolving credit facility associated with one of our financing subsidiaries that owns certain tax equity funds to, among other things, (a) increase the aggregate commitment amount from $200.0 million to $390.0 million and (b) increase the unused line fee on such committed amounts. In June 2020, we further amended this revolving credit facility to, among other things, (a) increase the aggregate commitment amount from $390.0 million to $437.5 million, (b) modify the advance rates for solar energy systems and (c) modify the interest rates to an adjusted LIBOR rate plus a weighted average margin of 4.15%. In addition, one of our subsidiaries used proceeds from the HELIV Notes to repay $149.3 million in aggregate principal amount outstanding under its financing arrangement.

Convertible Senior Notes

In May 2020, we issued and sold an aggregate principal amount of $130.0 million of our 9.75% convertible senior notes in a private placement at an issue price of 95%, for an aggregate purchase price of $123.5 million. The 9.75% convertible senior notes mature in April 2025 unless earlier redeemed, repurchased or converted. We granted the investors of the 9.75% convertible senior notes an option to purchase up to an additional $60.0 million aggregate principal amount of 9.75% convertible senior notes on the same terms and conditions, and the investors exercised this option and completed the purchase of such additional 9.75% convertible senior notes in June 2020. In May 2020, we also entered into privately negotiated exchanges with a small number of institutional investors in our 7.75% convertible senior notes whereby such investors exchanged all $55.0 million aggregate principal amount outstanding of our 7.75% convertible senior notes for an equal principal amount of our 9.75% convertible senior notes. In July 2020, certain of the holders of our 9.75% convertible senior notes converted approximately $10.5 million aggregate principal amount, including accrued and unpaid interest to the date of the conversion, of our 9.75% convertible senior notes into 776,890 shares of our common stock.

Historical Cash Flows—Six Months Ended June 30, 2020 Compared to Six Months Ended June 30, 2019

The following table summarizes our cash flows for the periods indicated:

	Six Months Ended   June 30,
	2020		2019		Change
	(in thousands)
Net cash used in operating activities	$	(82,928)	$	(55,694)	$	(27,234)
Net cash used in investing activities	(357,597)		(217,410)		(140,187)
Net cash provided by financing activities	474,661		285,554		189,107
Net increase in cash and restricted cash	$	34,136	$	12,450	$	21,686

Operating Activities

Net cash used in operating activities increased by $27.2 million in the six months ended June 30, 2020 compared to the six months ended June 30, 2019. This increase is primarily a result of an increase in purchases of inventory and prepaid inventory with net outflows of $18.0 million in 2020 compared to $7.1 million in 2019, offset by decreased payments to dealers

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for exclusivity and other bonus arrangements with net outflows of $16.7 million in 2020 compared to $22.0 million in 2019. This increase is also due to net outflows of $42.4 million in 2020 compared to net outflows of $17.5 million in 2019 based on: (a) our net loss of $105.7 million in 2020 excluding non-cash operating items of $63.4 million, primarily from depreciation, impairments and losses on disposals, amortization of deferred financing costs and debt discounts, unrealized net losses on derivatives, payment-in-kind interest on debt and equity-based compensation charges, which results in net outflows of $42.4 million and (b) our net loss of $85.3 million in 2019 excluding non-cash operating items of $67.8 million, primarily from depreciation, impairments and losses on disposals, amortization of deferred financing costs and debt discounts, unrealized net losses on derivatives, payment-in-kind interest on debt, loss on fair value option securities, loss on extinguishment of debt and equity-based compensation charges, which results in net outflows of $17.5 million. These net differences between the two periods result in a net change in operating cash flows of $24.9 million in 2020 compared to 2019 primarily driven by an increase in realized loss on interest rate swaps of $25.6 million due to the termination of certain debt facilities in 2020.

Investing Activities

Net cash used in investing activities increased by $140.2 million in the six months ended June 30, 2020 compared to the six months ended June 30, 2019. This increase is primarily a result of increases in purchases of property and equipment, primarily solar energy systems, of $274.3 million in 2020 compared to $164.8 million in 2019 and payments for investments and customer notes receivable of $99.0 million in 2020 compared to $62.4 million in 2019. This increase is partially offset by proceeds from customer notes receivable of $15.1 million (of which $12.0 million was prepaid) in 2020 compared to $9.3 million (of which $7.9 million was prepaid) in 2019.

Financing Activities

Net cash provided by financing activities increased by $189.1 million in the six months ended June 30, 2020 compared to the six months ended June 30, 2019. This increase is primarily a result of increases in net borrowings under our debt facilities of $305.2 million in 2020 compared to $253.4 million in 2019, net contributions from our redeemable noncontrolling interests of $118.1 million in 2020 compared to $45.1 million in 2019 and net proceeds from the equity component of a convertible debt instrument of $73.7 million in 2020 compared to an insignificant amount in 2019. This increase is partially offset by payments of deferred financing costs and debt discounts of $20.0 million in 2020 compared to $8.4 million in 2019.

Seasonality

The amount of electricity our solar energy systems produce is dependent in part on the amount of sunlight, or irradiation, where the assets are located. Because shorter daylight hours in winter months and poor weather conditions due to rain or snow results in less irradiation, the output of solar energy systems will vary depending on the season or the year. While we expect seasonal variability to occur, the geographic diversity in our assets helps to mitigate our aggregate seasonal variability.

Our Easy Save Monthly PPAs are subject to seasonality because we sell all the solar energy system's energy output to the customer at a fixed price per kWh. Our Easy Save Simple PPAs are not subject to seasonality (from a cash flow perspective or the customer's perspective) within a given year because the customer's payments are levelized on an annualized basis so we insulate the customer from monthly fluctuations in production. However, our Easy Save Simple PPAs are subject to seasonality from a revenue perspective because, similar to the Easy Save Monthly PPAs, we sell all the solar energy system's energy output to the customer. Our lease agreements are not subject to seasonality within a given year because we lease the solar energy system to the customer at a fixed monthly rate and the reference period for any production guarantee payments is a full year. Finally, our loan agreements are not subject to seasonality within a given year because the monthly installment payments for the financing of the customers' purchase of the solar energy system are fixed and the reference period for any production guarantee is a full year.

In addition, weather may impact our dealers' ability to install solar energy systems and energy storage systems. For example, the ability to install solar energy systems and energy storage systems during the winter months in the Northeastern U.S. is limited. This can impact the timing of when solar energy systems and energy storage systems can be installed and when we can acquire and begin to generate revenue from solar energy systems and energy storage systems.

Off-Balance Sheet Arrangements

As of June 30, 2020 and December 31, 2019, we did not have any off-balance-sheet arrangements. We consolidate all our securitization vehicles and tax equity funds.

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Critical Accounting Policies and Estimates

Our discussion and analysis of our financial condition and results of operations are based upon our financial statements, which have been prepared in accordance with GAAP. GAAP requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenue and expenses, cash flows and related disclosures. We base our estimates on historical experience and on various other assumptions we believe to be reasonable under the circumstances. In many instances, we could have reasonably used different accounting estimates, and in other instances, changes in the accounting estimates are reasonably likely to occur from period to period. Actual results may differ from these estimates. Our future financial statements will be affected to the extent our actual results materially differ from these estimates. For further information on our significant accounting policies, see Note 2, Significant Accounting Policies, in our Annual Report on Form 10-K filed with the SEC on February 25, 2020 and Note 2, Significant Accounting Policies, to our interim financial statements included elsewhere in this Quarterly Report on Form 10-Q.

We identify our most critical accounting policies as those that are the most pervasive and important to the portrayal of our financial position and results of operations, and that require the most difficult, subjective, and/or complex judgments by management regarding estimates about matters that are inherently uncertain. We believe the assumptions and estimates associated with the estimated useful life of our solar energy systems, the valuation of the assumptions regarding AROs and the valuation of redeemable noncontrolling interests have the greatest subjectivity and impact on our interim financial statements. Therefore, we consider these to be our critical accounting policies and estimates. There have been no material changes to our critical accounting policies and estimates as described in our Annual Report on Form 10-K.

Recent Accounting Pronouncements

See Note 2, Significant Accounting Policies, to our interim financial statements included elsewhere in this Quarterly Report on Form 10-Q.

Item 3. Quantitative and Qualitative Disclosures About Market Risk.

We are exposed to various market risks in the ordinary course of our business. Market risk is the potential loss that may result from market changes associated with our business or with an existing or forecasted financial or commodity transaction. Our primary exposure includes changes in interest rates because certain borrowings bear interest at floating rates based on LIBOR plus a specified margin. We sometimes manage our interest rate exposure on floating-rate debt by entering into derivative instruments to hedge all or a portion of our interest rate exposure on certain debt facilities. We do not enter into any derivative instruments for trading or speculative purposes. Changes in economic conditions could result in higher interest rates, thereby increasing our interest expense and operating expenses and reducing funds available to capital investments, operations and other purposes. A hypothetical 10% increase in our interest rates on our variable-rate debt facilities would have increased our interest expense by $588,000 and $1.3 million for the three and six months ended June 30, 2020, respectively.

Item 4. Controls and Procedures.

Internal Control Over Financial Reporting

Evaluation of Disclosure Controls and Procedures

We carried out an evaluation, under the supervision and with the participation of our management, including our Chief Executive Officer ("CEO") and our Chief Financial Officer ("CFO"), of the effectiveness of our disclosure controls and procedures as of the end of the period covered by this Quarterly Report on Form 10-Q, pursuant to Rules 13a-15(e) and 15d-15(e) under the Exchange Act. In connection with that evaluation, our CEO and our CFO concluded our disclosure controls and procedures were effective and designed to provide reasonable assurance the information required to be disclosed is recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms as of June 30, 2020. The term "disclosure controls and procedures", as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, means controls and other procedures of a company that are designed to ensure information required to be disclosed by a company in the reports it files or submits under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the SEC's rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure information required to be disclosed by a company in the reports it files or submits under the Exchange Act is accumulated and communicated to the company's management, including its principal executive and principal financial officers, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure. Management recognizes any controls and procedures, no matter how well designed and operated, can provide only

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reasonable assurance of achieving their objectives and management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

Changes in Internal Control over Financial Reporting

There was no change in our internal control over financial reporting that occurred during the second quarter of 2020 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

Limitations on Effectiveness of Controls and Procedures

Our disclosure controls and procedures are designed to provide reasonable assurance of achieving their objectives as specified above. However, our management, including our principal executive and principal financial officers, does not expect that our disclosure controls and procedures will prevent or detect all error and fraud. Any control system, no matter how well designed and operated, is based upon certain assumptions and can provide only reasonable, not absolute, assurance that its objectives will be met. Further, no evaluation of controls can provide absolute assurance that misstatements due to error or fraud will not occur or that all control issues and instances of fraud, if any, within our company have been detected.

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PART II - OTHER INFORMATION

Item 1. Legal Proceedings.

Although we may, from time to time, be involved in litigation, claims and government proceedings arising in the ordinary course of business, we are not a party to any litigation or governmental or other proceeding we believe will have a material adverse impact on our financial position, results of operations or liquidity. In the ordinary course of business, we have disputes with dealers and customers. In general, litigation claims or regulatory proceedings can be expensive and time consuming to bring or defend against, may result in the diversion of management attention and resources from our business and business goals and could result in settlement or damages that could significantly affect financial results and the conduct of our business.

Item 1A. Risk Factors.

There have been no material changes in the risks facing us as described in our Annual Report on Form 10-K filed with the SEC on February 25, 2020 except as described below.

The ongoing COVID-19 pandemic could adversely affect our business, financial condition and results of operations.

The ongoing COVID-19 pandemic continues to be a rapidly evolving situation. The COVID-19 pandemic and efforts to respond to it have resulted in widespread adverse impacts on the global economy. We have experienced some resulting disruptions to our business operations as the COVID-19 pandemic has continued to spread through the states and U.S. territories in which we operate. For example, social distancing guidelines, stay-at-home orders and similar government measures associated with the COVID-19 pandemic, as well as actions by individuals to reduce their potential exposure to the virus, contributed to a decline in origination, with new contract origination, net of cancelations, declining in each of March and April 2020 from the previous month. This decline reflects an inability by our dealers to perform in-person sales calls based on the stay-at-home orders in some locations. A significant or extended decline in new contract origination may have a material adverse effect on our business, cash flows, liquidity, financial condition and results of operations.

We and our dealers have modified certain business and workforce practices (including those related to new contract origination, installation and servicing of solar energy systems and employee work locations) to conform to government restrictions and best practices encouraged by governmental and regulatory authorities. As a result, net contract origination, net of cancelations, increased in May and June 2020, with June 2020 exceeding the number of new contracts originated, net of cancelations, in February 2020. Such modifications have allowed our dealers to continue to install and us to continue to service solar energy systems, but may also disrupt our operations, impede productivity or otherwise be ineffective in the future. If there are additional outbreaks of the COVID-19 virus or other viruses or more stringent health and safety guidelines are adopted, our and our dealers' ability to continue performing installations and service calls may be adversely impacted.

Our future success also depends on our ability to raise capital from third-party investors and commercial sources. In the initial weeks of the COVID-19 pandemic we saw access to capital markets reduced generally. If we are unable to regain access to the capital markets or are unable to raise funds through our tax equity and warehouse financing transactions at competitive terms, it would adversely impact both our ability to finance the deployment of our solar energy systems and energy storage systems and may have a material adverse effect on our business, cash flows, liquidity, financial condition and results of operations.

There is considerable uncertainty regarding the extent and duration of governmental and other measures implemented to try to slow the spread of the COVID-19 virus, such as large-scale travel bans and restrictions, border closures, quarantines, shelter-in-place orders and business and government shutdowns. Recently, states that had begun taking steps to reopen their economies experienced a subsequent surge in cases of COVID-19, causing these states to cease such reopening measures in some cases and reinstitute restrictions in others. Restrictions of this nature have caused, and may continue to cause, us and our dealers to experience operational delays and may cause milestones or deadlines relating to our exclusivity arrangements to be missed. To date, we have not received notices from our dealers regarding performance delays resulting from the COVID-19 pandemic. However, worsening economic conditions could result in such outcomes over time, which would impact our future financial performance. Further, the effects of the economic downturn associated with the COVID-19 pandemic, and other economic factors, may increase unemployment and reduce consumer credit ratings and credit availability, which may adversely affect new customer origination and our existing customers' ability to make payments on their solar service agreements. Periods of high unemployment and a lack of availability of credit may lead to increased delinquency and default rates. If existing economic conditions continue for a prolonged period of time or worsen, delinquencies on solar service agreements could increase, which would also negatively impact our future financial performance and the price of our common stock. Finally, if supply chains become significantly disrupted due to additional outbreaks of the COVID-19 virus or other viruses or more

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stringent health and safety guidelines are implemented, our ability to install and service solar energy systems could become adversely impacted.

We cannot predict the full impact the COVID-19 pandemic or the significant disruption and volatility currently being experienced in the capital markets will have on our business, cash flows, liquidity, financial condition and results of operations at this time due to numerous uncertainties. The ultimate impact will depend on future developments, including, among other things, the ultimate geographic spread and duration of the COVID-19 virus, the depth and duration of the economic downturn and other economic effects of the COVID-19 pandemic, the consequences of governmental and other measures designed to prevent the spread of the COVID-19 virus, actions taken by governmental authorities, customers, dealers and other third parties, our ability and the ability of our customers, potential customers and dealers to adapt to operating in a changed environment and the timing and extent to which normal economic and operating conditions resume.

If we or our dealers fail to hire and retain a sufficient number of employees and service providers in key functions, our growth and our ability to timely complete customer projects and successfully manage customer accounts would be constrained.

To support our growth, we and our dealers need to hire, train, deploy, manage and retain a substantial number of skilled employees, engineers, installers, electricians and sales and project finance specialists. Competition for qualified personnel in our industry has increased substantially, particularly for skilled personnel involved in the installation of solar energy systems. We and our dealers also compete with the homebuilding and construction industries for skilled labor. These industries are cyclical and when participants in these industries seek to hire additional workers, it puts upward pressure on our and our dealers' labor costs. Companies with whom our dealers compete to hire installers may offer compensation or incentive plans that certain installers may view as more favorable. As a result, our dealers may be unable to attract or retain qualified and skilled installation personnel. The further unionization of our industry's labor force or the homebuilding and construction industries' labor forces, either in response to the COVID-19 pandemic or otherwise, could also increase our dealers' labor costs. Shortages of skilled labor could significantly delay a project or otherwise increase our dealers' costs. Further, we need to continue to increase the training of our customer service team to provide high-end account management and service to homeowners before, during and following the point of installation of our solar energy systems. Identifying and recruiting qualified personnel and training them requires significant time, expense and attention. It can take several months before a new customer service team member is fully trained and productive at the standards we have established. If we are unable to hire, develop and retain talented customer service or other personnel, we may not be able to grow our business.

We rely on net metering and related policies to offer competitive pricing to our customers in most of our current markets and changes to net metering policies may significantly reduce demand for electricity from residential solar energy systems.

Net metering and related policies concerning distributed generation have received attention from federal legislators and regulators and challenge by various stakeholders. For example, in April 2020, the New England Ratepayers Association petitioned the Federal Energy Regulatory Commission ("FERC") to declare its exclusive federal jurisdiction over distributed generation, including residential solar, and to establish new federal customer compensation rates for excess energy in lieu of state net metering programs. On July 16, 2020, FERC issued an order dismissing the petition on procedural grounds. Parties to the proceeding may seek rehearing of FERC's order and then judicial review. Changes in federal law, including those made by statute, regulation, rule or order, could negatively affect net metering or other related policies which otherwise promote and support solar energy and enhance the economic viability of distributed residential solar. For further discussion of net metering and related policies, see "Risk Factors—Risks Related to Regulations—We rely on net metering and related policies to offer competitive pricing to our customers in most of our current markets and changes to net metering policies may significantly reduce demand for electricity from residential solar energy systems." in our Annual Report on Form 10-K filed with the SEC on February 25, 2020.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

Unregistered Sales of Equity Securities

In May 2020, we issued and sold an aggregate principal amount of $130.0 million of our 9.75% convertible senior notes in a private placement at an issue price of 95%, for an aggregate purchase price of $123.5 million. The 9.75% convertible senior notes mature in April 2025, unless earlier redeemed, repurchased or converted. We granted the investors of the 9.75% convertible senior notes an option to purchase up to an additional $60.0 million aggregate principal amount of 9.75% convertible senior notes on the same terms and conditions, and the investors exercised this option and completed the purchase of such additional 9.75% convertible senior notes in June 2020. In May 2020, we also entered into privately negotiated exchanges with a small number of institutional investors in our 7.75% convertible senior notes whereby such investors

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exchanged all $55.0 million aggregate principal amount outstanding of our 7.75% convertible senior notes for an equal principal amount of our 9.75% convertible senior notes.

The investors in our 9.75% convertible senior notes may, at their option, convert all or any portion of their 9.75% convertible senior notes. Upon conversion, we may satisfy our conversion obligation by paying and/or delivering, as the case may be, cash, shares of common stock, or a combination of cash and shares of common stock, at our option, subject to certain terms and conditions. The conversion rate for the 9.75% convertible senior notes is 74.0741 shares of common stock per $1,000 principal amount of 9.75% convertible senior notes, plus accrued and unpaid interest, which is equivalent to an initial conversion price (excluding interest) of approximately $13.50 per share of common stock. The conversion rate is subject to adjustment under certain circumstances in accordance with the terms of the related indenture. On and after May 14, 2023, we have the right to cause the conversion of the 9.75% convertible senior notes if certain specified conditions are met, including minimum common stock price and minimum volume conditions.

At any time prior to May 14, 2022, we may, at our option, redeem for cash up to 33.33% aggregate principal amount of the then outstanding 9.75% convertible senior notes (after giving effect to any conversions on or prior to such redemption date) at a redemption price equal to 115% of aggregate principal amount of 9.75% convertible senior notes so redeemed, plus any accrued and unpaid interest to, but excluding, the redemption date, using the net cash proceeds of one or more equity offerings by us, provided the redemption occurs within 180 days of the date of the closing of such equity offering.

At any time on or after May 14, 2023, we may, at our option, redeem for cash all (but not less than all) of the 9.75% convertible senior notes at the redemption price (expressed as percentages of principal amount) set forth below, plus any accrued and unpaid interest, if any, to, but excluding, the redemption date accrued and unpaid interest, if any, to, but excluding, the redemption date:

Period	Percentage
At any time on and after May 14, 2023 but prior to May 14, 2024	115%
At any time on and after May 14, 2024	110%

On and after September 23, 2024, the holders of the 9.75% convertible senior notes have the option to require us to repurchase their 9.75% convertible senior notes for cash at a purchase price of 110% of the aggregate principal amount repurchased, plus accrued and unpaid interest to the date of repurchase.

We offered and sold the 9.75% convertible senior notes in reliance on the exemption from registration provided by Section 4(a)(2) of the Securities Act, in reliance upon the safe harbor provided by Rule 506(c) of Regulation D promulgated thereunder.

Item 3. Defaults Upon Senior Securities.

Not applicable.

Item 4. Mine Safety Disclosures.

Not applicable.

Item 5. Other Information.

None.

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Item 6. Exhibits.

Exhibit No.	Description
4.1	Indenture, between Sunnova Energy International Inc. and Wilmington Trust, National Association, as Trustee, dated May 14, 2020 (incorporated by reference to Exhibit 4.11 to Form S-1 filed on June 29, 2020).
4.2∞	Indenture, between Sunnova Helios IV Issuer, LLC and Wells Fargo Bank, National Association, dated June 19, 2020 (incorporated by reference to Exhibit 4.12 to Form S-1 filed on June 29, 2020).
4.3	Registration Rights Agreement, among Sunnova Energy International Inc. and the parties listed therein, dated May 14, 2020 (incorporated by reference to Exhibit 4.4 to Form S-1 filed on June 29, 2020).
4.4	First Amendment to The Second Amended and Restated Registration Rights Agreement, among Sunnova Energy International Inc. and the parties listed therein, dated May 14, 2020 (incorporated by reference to Exhibit 4.2.1 to Form S-1 filed on June 29, 2020).
10.1∞	Omnibus Amendment to the Credit Agreement, among Sunnova TEP Holdings, LLC, Sunnova TE Management, LLC, Credit Suisse AG, New York Branch, the Funding Agents from time to time party thereto, and the lenders from time to time party thereto, dated May 14, 2020 (incorporated by reference to Exhibit 10.2.6 to Form S-1 filed on June 29, 2020).
10.2∞	Seventh Amendment to the Credit Agreement, among Sunnova TEP Holdings, LLC, Sunnova TE Management, LLC, Credit Suisse AG, New York Branch, the Funding Agents from time to time party thereto, and the Lenders from time to time party thereto, dated June 26, 2020 (incorporated by reference to Exhibit 10.2.7 to Form S-1 filed on June 29, 2020).
10.3	Amendment No. 1 to Amended and Restated Credit Agreement, among Sunnova EZ-Own Portfolio, LLC, Sunnova SLA Management, LLC, Sunnova Asset Portfolio 7 Holdings, LLC, Credit Suisse AGH, New York Branch, Wells Fargo Bank, National Association, U.S. Bank National Association, the Funding Agents from time to time party thereto, and the Lender from time to time party thereto, dated June 5, 2019 (incorporated by reference to Exhibit 10.3.1 to Form S-1 filed on June 29, 2020).
10.4∞	Note Purchase Agreement, by and among Sunnova Helios IV Issuer, LLC, Sunnova Helios IV Depositor, LLC, Sunnova Energy Corporation and Credit Suisse Securities (USA) LLC, dated June 15, 2020 (incorporated by reference to Exhibit 10.8 to Form S-1 filed on June 29, 2020).
10.5∞	Purchase and Exchange Agreement, by and among Sunnova Energy International Inc. and the Investors, as defined therein, dated May 13, 2020 (incorporated by reference to Exhibit 10.6 to Form S-1 filed on June 29, 2020).
10.6	Board Designation Agreement, by and among Sunnova Energy International Inc., Kayne Multiple Strategy Fund, L.P., Kayne Solutions Fund, L.P., San Bernardino County Employees’ Retirement Association and TFGI Holdings, LLC, dated May 14, 2020 (incorporated by reference to Exhibit 10.7 to Form S-1 filed on June 29, 2020).
31.1	Certification of Chief Executive Officer, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	Certification of Chief Financial Officer, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1	Certification of Chief Executive Officer, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of Chief Financial Officer, 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 - the instance document does not appear in the Interactive Data File because its tags are embedded within the inline XBRL document.
101.SCH	XBRL Taxonomy Extension Schema Linkbase Document.
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document.
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document.
101.LAB	XBRL Taxonomy Extension Label Linkbase Document.
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document.
104	Cover Page Interactive Data File (embedded within the inline XBRL document).

__________________

∞ Portions of this exhibit have been omitted.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

	SUNNOVA ENERGY INTERNATIONAL INC.
Date: July 30, 2020	By:	/s/ William J. Berger
		William J. Berger
		Chief Executive Officer and Director
		(Principal Executive Officer)

Date: July 30, 2020	By:	/s/ Robert L. Lane
		Robert L. Lane
		Chief Financial Officer
		(Principal Financial Officer)

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