Sunnova Energy International (NOVA) 10-Q 27 Oct 22 2022 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2022	Oct. 24, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2022
Document Transition Report	false
Entity File Number	001-38995
Entity Registrant Name	Sunnova Energy International Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	30-1192746
Entity Address, Address Line One	20 East Greenway Plaza, Suite 540
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77046
City Area Code	281
Local Phone Number	892-1588
Title of 12(b) Security	Common Stock, $0.0001 par value per share
Trading Symbol	NOVA
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		114,909,899
Entity Central Index Key	0001772695
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Amendment Flag	false
Current Fiscal Year End Date	--12-31

UNAUDITED CONDENSED CONSOLIDATE

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Sep. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents		$ 412,581	$ 243,101
Accounts receivable—trade, net		35,743	18,584
Accounts receivable—other		152,942	57,736
Other current assets, net of allowance of $5,306 and $1,646 as of September 30, 2022 and December 31, 2021, respectively		336,047	296,321
Total current assets		937,313	615,742
Property and equipment, net		3,537,177	2,909,613
Customer notes receivable, net of allowance of $62,682 and $39,492 as of September 30, 2022 and December 31, 2021, respectively		2,072,264	1,204,073
Intangible assets, net		169,187	190,520
Goodwill		13,150	13,150
Other assets		920,634	571,136
Total assets	[1]	7,649,725	5,504,234
Current liabilities:
Accounts payable		94,647	55,033
Accrued expenses		121,195	81,721
Current portion of long-term debt		191,131	129,793
Other current liabilities		51,093	44,350
Total current liabilities		458,066	310,897
Long-term debt, net		4,807,107	3,135,681
Other long-term liabilities		631,137	436,043
Total liabilities	[1]	5,896,310	3,882,621
Commitments and contingencies
Redeemable noncontrolling interests		153,469	145,336
Stockholders' equity:
Common stock, 114,895,870 and 113,386,600 shares issued as of September 30, 2022 and December 31, 2021, respectively, at $0.0001 par value		11	11
Additional paid-in capital—common stock		1,633,507	1,649,199
Accumulated deficit		(387,073)	(459,715)
Total stockholders' equity		1,246,445	1,189,495
Noncontrolling interests		353,501	286,782
Total equity		1,599,946	1,476,277
Total liabilities, redeemable noncontrolling interests and equity		$ 7,649,725	$ 5,504,234
[1]The consolidated assets as of September 30, 2022 and December 31, 2021 include $2,721,620 and $2,148,398, respectively, of assets of variable interest entities ("VIEs") that can only be used to settle obligations of the VIEs. These assets include cash of $33,695 and $23,538 as of September 30, 2022 and December 31, 2021, respectively; accounts receivable—trade, net of $9,834 and $6,167 as of September 30, 2022 and December 31, 2021, respectively; accounts receivable—other of $739 and $410 as of September 30, 2022 and December 31, 2021, respectively; other current assets of $273,175 and $272,421 as of September 30, 2022 and December 31, 2021, respectively; property and equipment, net of $2,362,041 and $1,817,471 as of September 30, 2022 and December 31, 2021, respectively; and other assets of $42,136 and $28,391 as of September 30, 2022 and December 31, 2021, respectively. The consolidated liabilities as of September 30, 2022 and December 31, 2021 include $59,908 and $47,225, respectively, of liabilities of VIEs whose creditors have no recourse to Sunnova Energy International Inc. These liabilities include accounts payable of $8,965 and $6,014 as of September 30, 2022 and December 31, 2021, respectively; accrued expenses of $178 and $88 as of September 30, 2022 and December 31, 2021, respectively; other current liabilities of $2,894 and $3,845 as of September 30, 2022 and December 31, 2021, respectively; and other long-term liabilities of $47,871 and $37,278 as of September 30, 2022 and December 31, 2021, respectively.

UNAUDITED CONDENSED CONSOLIDA_2

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands		Sep. 30, 2022	Dec. 31, 2021
Other current asset, allowance		$ 5,306	$ 1,646
Customer notes receivable, allowance		$ 62,682	$ 39,492
Common stock, issued (in shares)		114,895,870	113,386,600
Common stock, par value (in USD per share)		$ 0.0001	$ 0.0001
Assets	[1]	$ 7,649,725	$ 5,504,234
Cash		412,581	243,101
Accounts receivable—trade, net		35,743	18,584
Accounts receivable—other		152,942	57,736
Other current assets		336,047	296,321
Property and equipment, net		3,537,177	2,909,613
Other assets		920,634	571,136
Liabilities	[1]	5,896,310	3,882,621
Accounts payable		94,647	55,033
Accrued expenses		121,195	81,721
Other current liabilities		51,093	44,350
Other long-term liabilities		631,137	436,043
Primary beneficiary
Assets		2,721,620	2,148,398
Cash		33,695	23,538
Accounts receivable—trade, net		9,834	6,167
Accounts receivable—other		739	410
Other current assets		273,175	272,421
Property and equipment, net		2,362,041	1,817,471
Other assets		42,136	28,391
Liabilities		59,908	47,225
Accounts payable		8,965	6,014
Accrued expenses		178	88
Other current liabilities		2,894	3,845
Other long-term liabilities		$ 47,871	$ 37,278
[1]The consolidated assets as of September 30, 2022 and December 31, 2021 include $2,721,620 and $2,148,398, respectively, of assets of variable interest entities ("VIEs") that can only be used to settle obligations of the VIEs. These assets include cash of $33,695 and $23,538 as of September 30, 2022 and December 31, 2021, respectively; accounts receivable—trade, net of $9,834 and $6,167 as of September 30, 2022 and December 31, 2021, respectively; accounts receivable—other of $739 and $410 as of September 30, 2022 and December 31, 2021, respectively; other current assets of $273,175 and $272,421 as of September 30, 2022 and December 31, 2021, respectively; property and equipment, net of $2,362,041 and $1,817,471 as of September 30, 2022 and December 31, 2021, respectively; and other assets of $42,136 and $28,391 as of September 30, 2022 and December 31, 2021, respectively. The consolidated liabilities as of September 30, 2022 and December 31, 2021 include $59,908 and $47,225, respectively, of liabilities of VIEs whose creditors have no recourse to Sunnova Energy International Inc. These liabilities include accounts payable of $8,965 and $6,014 as of September 30, 2022 and December 31, 2021, respectively; accrued expenses of $178 and $88 as of September 30, 2022 and December 31, 2021, respectively; other current liabilities of $2,894 and $3,845 as of September 30, 2022 and December 31, 2021, respectively; and other long-term liabilities of $47,871 and $37,278 as of September 30, 2022 and December 31, 2021, respectively.

UNAUDITED CONDENSED CONSOLIDA_3

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income Statement [Abstract]
Revenue	$ 149,364	$ 68,901	$ 362,098	$ 176,733
Operating expense:
Cost of revenue—depreciation	24,663	19,665	69,935	55,621
Cost of revenue—inventory sales	40,917	0	89,884	0
Cost of revenue—other	15,567	7,342	32,974	13,572
Operations and maintenance	9,774	6,035	23,787	14,640
General and administrative	75,897	53,372	214,362	144,028
Other operating expense (income)	10,267	(9,337)	(4,186)	(5,303)
Total operating expense, net	177,085	77,077	426,756	222,558
Operating loss	(27,721)	(8,176)	(64,658)	(45,825)
Interest expense, net	18,328	26,588	36,275	84,748
Interest income	(16,185)	(9,098)	(40,428)	(24,266)
Loss on extinguishment of long-term debt, net	0	0	0	9,824
Other (income) expense	(12)	189	(327)	60
Loss before income tax	(29,852)	(25,855)	(60,178)	(116,191)
Income tax expense	0	64	0	64
Net loss	(29,852)	(25,919)	(60,178)	(116,255)
Net income attributable to redeemable noncontrolling interests and noncontrolling interests	32,195	1,622	72,455	7,665
Net loss attributable to stockholders	$ (62,047)	$ (27,541)	$ (132,633)	$ (123,920)
Net loss per share attributable to common stockholders - basic (in USD per share)	$ (0.54)	$ (0.25)	$ (1.16)	$ (1.12)
Net loss per share attributable to common stockholders - diluted (in USD per share)	$ (0.54)	$ (0.25)	$ (1.16)	$ (1.12)
Weighted average common shares outstanding - basic (in shares)	114,816,879	112,159,698	114,293,251	110,185,333
Weighted average common shares outstanding - diluted (in shares)	114,816,879	112,159,698	114,293,251	110,185,333

UNAUDITED CONDENSED CONSOLIDA_4

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (60,178)	$ (116,255)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	78,401	62,286
Impairment and loss on disposals, net	2,971	3,522
Amortization of intangible assets	21,333	14,111
Amortization of deferred financing costs	9,690	11,556
Amortization of debt discount	6,273	8,231
Non-cash effect of equity-based compensation plans	20,059	13,937
Unrealized gain on derivatives	(35,685)	(5,574)
Unrealized gain on fair value instruments	(4,136)	(4,665)
Loss on extinguishment of long-term debt, net	0	9,824
Other non-cash items	(14,087)	12,622
Changes in components of operating assets and liabilities:
Accounts receivable	(100,537)	(27,194)
Other current assets	(139,946)	(99,731)
Other assets	(84,142)	(41,404)
Accounts payable	1,403	(5,226)
Accrued expenses	41,571	19,923
Other current liabilities	(4,243)	(1,617)
Other long-term liabilities	(4,542)	(1,193)
Net cash used in operating activities	(265,795)	(146,847)
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property and equipment	(637,556)	(344,044)
Payments for investments and customer notes receivable	(902,773)	(553,475)
Proceeds from customer notes receivable	79,870	47,300
Proceeds from investments in solar receivables	9,388	0
Other, net	(282)	3,038
Net cash used in investing activities	(1,451,353)	(847,181)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from long-term debt	2,308,033	1,890,185
Payments of long-term debt	(571,261)	(815,710)
Payments on notes payable	0	(34,555)
Payments of deferred financing costs	(24,748)	(27,031)
Payments of debt discounts	0	(2,324)
Purchase of capped call transactions	(48,420)	(91,655)
Payments of common stock issuance costs, net	(3,345)
Proceeds from issuance of common stock, net		9,911
Contributions from redeemable noncontrolling interests and noncontrolling interests	236,661	226,432
Distributions to redeemable noncontrolling interests and noncontrolling interests	(20,847)	(10,407)
Payments of costs related to redeemable noncontrolling interests and noncontrolling interests	(10,380)	(8,159)
Other, net	(601)	(283)
Net cash provided by financing activities	1,865,092	1,136,404
Net increase in cash, cash equivalents and restricted cash	147,944	142,376
Cash, cash equivalents and restricted cash at beginning of period	391,897	377,893
Cash, cash equivalents and restricted cash at end of period	539,841	520,269
Restricted cash included in other current assets	(14,584)	(52,042)
Restricted cash included in other assets	(112,676)	(60,071)
Cash and cash equivalents at end of period	412,581	408,156
Non-cash investing and financing activities:
Change in accounts payable and accrued expenses related to purchases of property and equipment	14,019	50,057
Change in accounts payable and accrued expenses related to payments for investments and customer notes receivable	21,750	(37,086)
Non-cash issuance of common stock related to the settlement of contingent consideration	16,014	0
Non-cash conversion of convertible senior notes for common stock	0	95,648
Supplemental cash flow information:
Cash paid for interest	105,375	70,415
Cash paid for income taxes	$ 0	$ 94

UNAUDITED CONDENSED CONSOLIDA_5

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF REDEEMABLE NONCONTROLLING INTERESTS AND EQUITY - USD ($) $ in Thousands	Total	Cumulative-effect adjustment	Total Stockholders' Equity	Total Stockholders' Equity Cumulative-effect adjustment	Common Stock	Additional Paid-in Capital - Common Stock	Accumulated Deficit	Accumulated Deficit Cumulative-effect adjustment	Noncontrolling Interests
Redeemable noncontrolling interest, beginning balance at Dec. 31, 2020	$ 136,124
Increase (Decrease) in Redeemable Noncontrolling Interests [Roll Forward]
Net income (loss)	2,110
Distributions to redeemable noncontrolling interests and noncontrolling interests	(1,090)
Equity in subsidiaries attributable to parent	40
Other, net	(62)
Redeemable noncontrolling interest, ending balance at Mar. 31, 2021	137,122
Stockholders' equity, beginning balance (in shares) at Dec. 31, 2020					100,412,036
Stockholders' equity, beginning balance at Dec. 31, 2020	$ 1,144,557	$ 2,254	$ 951,731	$ 2,254	$ 10	$ 1,482,716	$ (530,995)	$ 2,254	$ 192,826
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2020-06 [Member]
Net income (loss)	$ (26,174)		(32,983)				(32,983)		6,809
Issuance of stock, net (in shares)					8,141,766
Issuance of common stock, net	65,542		65,542		$ 1	65,541
Equity component of debt instrument	(8,807)		(8,807)			(8,807)
Contributions from redeemable noncontrolling interests and noncontrolling interests	40,802								40,802
Distributions to redeemable noncontrolling interests and noncontrolling interests	(1,743)								(1,743)
Costs related to redeemable noncontrolling interests and noncontrolling interests	(55)								(55)
Equity in subsidiaries attributable to parent	(40)		37,213				37,213		(37,253)
Equity-based compensation expense	7,924		7,924			7,924
Other, net	(475)		1			1			(476)
Stockholders' equity, ending balance (in shares) at Mar. 31, 2021					108,553,802
Stockholders' equity, ending balance at Mar. 31, 2021	1,223,785		1,022,875		$ 11	1,547,375	(524,511)		200,910
Increase (Decrease) in Redeemable Noncontrolling Interests [Roll Forward]
Net income (loss)	4,236
Distributions to redeemable noncontrolling interests and noncontrolling interests	(1,128)
Equity in subsidiaries attributable to parent	2
Other, net	(47)
Redeemable noncontrolling interest, ending balance at Jun. 30, 2021	140,185
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(70,508)		(63,396)				(63,396)		(7,112)
Issuance of stock, net (in shares)					3,431,715
Issuance of common stock, net	138,020		138,020			138,020
Capped call transactions	(91,655)		(91,655)			(91,655)
Contributions from redeemable noncontrolling interests and noncontrolling interests	75,808								75,808
Distributions to redeemable noncontrolling interests and noncontrolling interests	(2,300)								(2,300)
Costs related to redeemable noncontrolling interests and noncontrolling interests	(3,035)								(3,035)
Equity in subsidiaries attributable to parent	(2)		57,971				57,971		(57,973)
Equity-based compensation expense	2,920		2,920			2,920
Other, net	(655)		(1)			(1)			(654)
Stockholders' equity, ending balance (in shares) at Jun. 30, 2021					111,985,517
Stockholders' equity, ending balance at Jun. 30, 2021	1,272,378		1,066,734		$ 11	1,596,659	(529,936)		205,644
Increase (Decrease) in Redeemable Noncontrolling Interests [Roll Forward]
Net income (loss)	3,332
Distributions to redeemable noncontrolling interests and noncontrolling interests	(1,146)
Equity in subsidiaries attributable to parent	5
Other, net	1
Redeemable noncontrolling interest, ending balance at Sep. 30, 2021	142,377
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(29,251)		(27,541)				(27,541)		(1,710)
Issuance of stock, net (in shares)					279,137
Issuance of common stock, net	1,188		1,188			1,188
Contributions from redeemable noncontrolling interests and noncontrolling interests	109,822								109,822
Distributions to redeemable noncontrolling interests and noncontrolling interests	(3,000)								(3,000)
Costs related to redeemable noncontrolling interests and noncontrolling interests	(3,037)								(3,037)
Equity in subsidiaries attributable to parent	(5)		51,683				51,683		(51,688)
Equity-based compensation expense	3,093		3,093			3,093
Other, net	(1,391)		1				1		(1,392)
Stockholders' equity, ending balance (in shares) at Sep. 30, 2021					112,264,654
Stockholders' equity, ending balance at Sep. 30, 2021	1,349,797		1,095,158		$ 11	1,600,940	(505,793)		254,639
Redeemable noncontrolling interest, beginning balance at Dec. 31, 2021	145,336
Increase (Decrease) in Redeemable Noncontrolling Interests [Roll Forward]
Net income (loss)	(2,432)
Contributions from redeemable noncontrolling interests and noncontrolling interests	3,757
Distributions to redeemable noncontrolling interests and noncontrolling interests	(1,122)
Costs related to redeemable noncontrolling interests and noncontrolling interests	(57)
Equity in subsidiaries attributable to parent	(173)
Other, net	(123)
Redeemable noncontrolling interest, ending balance at Mar. 31, 2022	145,186
Stockholders' equity, beginning balance (in shares) at Dec. 31, 2021					113,386,600
Stockholders' equity, beginning balance at Dec. 31, 2021	1,476,277		1,189,495		$ 11	1,649,199	(459,715)		286,782
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(18,197)		(33,583)				(33,583)		15,386
Issuance of stock, net (in shares)					524,788
Issuance of common stock, net	(2,976)		(2,976)			(2,976)
Contributions from redeemable noncontrolling interests and noncontrolling interests	48,132								48,132
Distributions to redeemable noncontrolling interests and noncontrolling interests	(4,732)								(4,732)
Costs related to redeemable noncontrolling interests and noncontrolling interests	(2,292)								(2,292)
Equity in subsidiaries attributable to parent	173		69,769				69,769		(69,596)
Equity-based compensation expense	10,864		10,864			10,864
Other, net	174								174
Stockholders' equity, ending balance (in shares) at Mar. 31, 2022					113,911,388
Stockholders' equity, ending balance at Mar. 31, 2022	1,507,423		1,233,569		$ 11	1,657,087	(423,529)		273,854
Increase (Decrease) in Redeemable Noncontrolling Interests [Roll Forward]
Net income (loss)	4,563
Contributions from redeemable noncontrolling interests and noncontrolling interests	13,423
Distributions to redeemable noncontrolling interests and noncontrolling interests	(1,239)
Costs related to redeemable noncontrolling interests and noncontrolling interests	(193)
Equity in subsidiaries attributable to parent	(10,168)
Other, net	(65)
Redeemable noncontrolling interest, ending balance at Jun. 30, 2022	151,507
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(14,260)		(37,003)				(37,003)		22,743
Issuance of stock, net (in shares)					745,829
Issuance of common stock, net	15,828		15,828			15,828
Contributions from redeemable noncontrolling interests and noncontrolling interests	111,967								111,967
Distributions to redeemable noncontrolling interests and noncontrolling interests	(5,237)								(5,237)
Costs related to redeemable noncontrolling interests and noncontrolling interests	(2,417)								(2,417)
Equity in subsidiaries attributable to parent	10,168		83,316				83,316		(73,148)
Equity-based compensation expense	4,732		4,732			4,732
Other, net	(2,011)		(1)				(1)		(2,010)
Stockholders' equity, ending balance (in shares) at Jun. 30, 2022					114,657,217
Stockholders' equity, ending balance at Jun. 30, 2022	1,626,193		1,300,441		$ 11	1,677,647	(377,217)		325,752
Increase (Decrease) in Redeemable Noncontrolling Interests [Roll Forward]
Net income (loss)	(1,507)
Contributions from redeemable noncontrolling interests and noncontrolling interests	5,990
Distributions to redeemable noncontrolling interests and noncontrolling interests	(1,203)
Costs related to redeemable noncontrolling interests and noncontrolling interests	(8)
Equity in subsidiaries attributable to parent	(1,240)
Other, net	(70)
Redeemable noncontrolling interest, ending balance at Sep. 30, 2022	153,469
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(28,345)		(62,047)				(62,047)		33,702
Issuance of stock, net (in shares)					238,653
Issuance of common stock, net	(183)		(183)			(183)
Capped call transactions	(48,420)		(48,420)			(48,420)
Contributions from redeemable noncontrolling interests and noncontrolling interests	53,392								53,392
Distributions to redeemable noncontrolling interests and noncontrolling interests	(7,314)								(7,314)
Costs related to redeemable noncontrolling interests and noncontrolling interests	(226)								(226)
Equity in subsidiaries attributable to parent	1,240		52,191				52,191		(50,951)
Equity-based compensation expense	4,463		4,463			4,463
Other, net	(854)		0				0		(854)
Stockholders' equity, ending balance (in shares) at Sep. 30, 2022					114,895,870
Stockholders' equity, ending balance at Sep. 30, 2022	$ 1,599,946		$ 1,246,445		$ 11	$ 1,633,507	$ (387,073)		$ 353,501

Description of Business and Bas

Description of Business and Basis of Presentation	9 Months Ended
	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business and Basis of Presentation	Description of Business and Basis of Presentation We are a leading residential energy service provider, serving over 246,000 customers in more than 35 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 consolidated 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, energy storage systems and related products and services 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, reduces exposure to labor shortages and lowers fixed costs relative to our peers, furthering our competitive advantage. We provide our services through long-term agreements with a diversified pool of credit quality customers. Our solar service agreements typically are structured as either a legal-form lease (a "lease") of a solar energy system and/or energy storage 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 and/or energy storage system with financing provided by us (a "loan"); however, we also offer service plans for systems we did not originate. We make it possible in some states for a customer to obtain a new roof and other ancillary products as part of their solar loan. We also allow customers originated through our homebuilder channel the option of purchasing the system when the customer closes on the purchase of a new home. The initial term of our solar service agreements is typically between 10 and 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 or one 10-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. Our future success depends in part on our ability to raise capital from third-party investors and commercial sources. We have an established track record of attracting capital from diverse sources. From our inception through September 30, 2022, we have raised more than $11.2 billion in total capital commitments from equity, debt and tax equity investors. 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 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 2021 annual audited consolidated financial statements and accompanying notes included in our Annual Report on Form 10-K filed with the SEC on February 24, 2022. 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 our continual growth, seasonal fluctuations in demand for power, timing of maintenance and other expenditures, changes in interest expense and other factors. Our interim financial statements include our accounts 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 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 holding a majority of the voting interests. A primary beneficiary is defined as the party that has (a) the power to direct the activities of a VIE that most significantly impact the VIE's economic performance and (b) the obligation to absorb losses or 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 substantive 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 to determine whether we continue to be the primary beneficiary. We have eliminated all intercompany transactions in consolidation. 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 ("COVID-19") Pandemic The ongoing COVID-19 pandemic has resulted and may continue to result in widespread adverse impacts on the global economy. We have experienced some resulting disruptions to our business operations due to the COVID-19 virus and its impacts. Throughout the COVID-19 pandemic, we have continued to service and install solar energy systems and energy storage systems. The industry is currently facing shortages and shipping delays affecting the supply of energy storage systems, modules and component parts for inverters and racking used in solar energy systems available for purchase. These shortages and delays can be attributed in part to the COVID-19 pandemic and resulting government action, as well as to allegations regarding the use of forced labor in the Chinese polysilicon supply chain. While a majority of our dealers have secured sufficient quantities to permit them to continue installing through much of 2022, if these shortages and delays persist, they could 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 those systems. In addition, if supply chains become significantly disrupted due to additional outbreaks of the COVID-19 virus or otherwise, or more stringent health and safety guidelines are implemented, our ability to install and service solar energy systems and energy storage systems could become adversely impacted. We cannot predict the full impact the COVID-19 pandemic will have on our business, cash flows, liquidity, financial condition and results of operations at this time due to numerous uncertainties. We will continue to monitor developments affecting our workforce, our customers and our business operations generally, and will take actions we determine are necessary in order to mitigate these impacts.

Significant Accounting Policies

Significant Accounting Policies	9 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
Significant Accounting Policies	Significant Accounting Policies Included below are updates to significant accounting policies disclosed in our 2021 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 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 based on the best available data at the time. 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 September 30, 2022, 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 Nine Months Ended 2022 2021 2022 2021 (in thousands) Balance at beginning of period $ 1,198 $ 858 $ 1,044 $ 912 Provision for current expected credit losses 802 485 1,891 1,322 Write off of uncollectible accounts (717) (424) (1,769) (1,410) Recoveries 83 54 200 148 Other, net — — — 1 Balance at end of period $ 1,366 $ 973 $ 1,366 $ 973 Accounts Receivable—Other. Accounts receivable—other primarily represents receivables from our dealers or other parties related to the sale of inventory and the use of inventory procured by us. Inventory Inventory is stated at the lower of cost and net realizable value using the first-in, first-out method. Inventory primarily represents (a) raw materials, such as energy storage systems, photovoltaic modules, inverters, meters and modems, (b) homebuilder construction in progress and (c) other associated equipment purchased. These materials are typically procured by us and used by our dealers, sold to our dealers or held for use as original parts on new solar energy systems or replacement parts on existing solar energy systems. We remove these items from inventory and record the transaction in typically one of these manners: (a) expense to operations and maintenance expense when installed as a replacement part for a solar energy system, (b) recognize in accounts receivable—other when procured by us and used by our dealers, (c) expense to cost of revenue—inventory sales if sold directly to a dealer or other party, (d) capitalize to property and equipment when installed on an existing home or (e) capitalize to property and equipment when placed in service under the homebuilder program. We periodically evaluate our inventory for unusable and obsolete items based on assumptions about future demand and market conditions. Based on this evaluation, provisions are made to write inventory down to net realizable value. The following table presents the detail of inventory as recorded in other current assets in the unaudited condensed consolidated balance sheets: As of As of (in thousands) Modules and inverters $ 41,728 $ 60,661 Energy storage systems and components 98,944 43,071 Homebuilder construction in progress 45,055 23,642 Meters and modems 362 581 Other 483 — Total $ 186,572 $ 127,955 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 cash, accounts receivable, customer notes receivable, investments in solar receivables, accounts payable, accrued expenses, long-term debt, interest rate swaps and contingent consideration. 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 and based on quoted market prices in active markets for identical assets or liabilities that are accessible at the measurement date (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 investments in solar receivables based on a discounted cash flows model that utilizes market data related to solar irradiance, production factors by region and projected electric utility rates in order to build up revenue projections (Level 3). In addition, lease-related revenue and maintenance and service costs were supported through the use of available market studies and data. 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). For contingent consideration, we estimate the fair value of the installation earnout using the Monte Carlo model based on the forecasted placements for the installations and the microgrid earnout using a scenario-based methodology based on the probabilities of the microgrid earnout, both using Level 3 inputs. See Note 7, Customer Notes Receivable, Note 8, Long-Term Debt and Note 9, Derivative Instruments. The following tables present our financial instruments measured at fair value on a recurring basis as of September 30, 2022 and December 31, 2021: As of September 30, 2022 Total Level 1 Level 2 Level 3 (in thousands) Financial assets: Investments in solar receivables $ 71,656 $ — $ — $ 71,656 Derivative assets 117,544 — 117,544 — Total $ 189,200 $ — $ 117,544 $ 71,656 Financial liabilities: Contingent consideration $ 45,161 $ — $ — $ 45,161 Total $ 45,161 $ — $ — $ 45,161 As of December 31, 2021 Total Level 1 Level 2 Level 3 (in thousands) Financial assets: Investments in solar receivables $ 82,658 $ — $ — $ 82,658 Derivative assets 14,351 — 14,351 — Total $ 97,009 $ — $ 14,351 $ 82,658 Financial liabilities: Contingent consideration $ 67,895 $ — $ — $ 67,895 Derivative liabilities 5,330 — 5,330 — Total $ 73,225 $ — $ 5,330 $ 67,895 Changes in fair value of our investments in solar receivables are included in other operating expense/income in the consolidated statements of operations. The following table summarizes the change in fair value of our financial assets accounted for at fair value on a recurring basis using Level 3 inputs as recorded in other current assets and other assets in the unaudited condensed consolidated balance sheets: Nine Months Ended 2022 2021 (in thousands) Balance at beginning of period $ 82,658 $ — Settlements (8,090) — Loss recognized in earnings (2,912) — Balance at end of period $ 71,656 $ — Changes in fair value of our contingent consideration are included in other operating expense/income in the consolidated statements of operations. The following table summarizes the change in fair value of our financial liabilities accounted for at fair value on a recurring basis using Level 3 inputs as recorded in other long-term liabilities in the unaudited condensed consolidated balance sheets: Nine Months Ended 2022 2021 (in thousands) Balance at beginning of period $ 67,895 $ — Additions — 90,400 Settlements (16,014) — Gain recognized in earnings (6,720) (4,726) Balance at end of period $ 45,161 $ 85,674 The following table summarizes the significant unobservable inputs used in the valuation of our liabilities using Level 3 inputs: Unobservable Weighted Liabilities: Contingent consideration - installation earnout Volatility 35.00% Revenue risk premium 15.80% Risk-free discount rate 4.24% Contingent consideration - microgrid earnout Probability of success 25.00% Risk-free discount rate 4.24% Revenue The following table presents the detail of revenue as recorded in the unaudited condensed consolidated statements of operations: Three Months Ended Nine Months Ended 2022 2021 2022 2021 (in thousands) PPA revenue $ 31,891 $ 25,359 $ 84,235 $ 68,443 Lease revenue 25,912 17,845 71,717 51,765 Inventory sales revenue 45,528 — 99,773 — Solar renewable energy certificate revenue 16,241 12,858 37,172 30,648 Cash sales revenue 18,933 8,680 45,695 15,618 Loan revenue 5,012 2,126 12,582 5,000 Other revenue 5,847 2,033 10,924 5,259 Total $ 149,364 $ 68,901 $ 362,098 $ 176,733 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, net of cash incentives. 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 $2.7 billion as of September 30, 2022, 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 four years. Certain customers may receive cash incentives. We defer recognition of the payment of these cash incentives and recognize them over the life of the contract as a reduction to revenue. The deferred payment is recorded in other assets for customers who receive the cash incentives under our lease and PPA agreements, and as a contra-liability in other long-term liabilities for customers who receive the cash incentives under our loan agreements. 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 20 or 25 years with an opportunity for customers to renew for up to an additional 10 years, via two five-year or one 10-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 20 or 25 years with an opportunity for customers to renew for up to an additional 10 years, via two five-year or one 10-year renewal options. In most cases, 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 related 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 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 customer's payments, if needed, are payable as early as the first anniversary of the solar energy system's placed in service date and then every annual period thereafter. See Note 15, Commitments and Contingencies. Inventory Sales . Inventory sales revenue represents revenue from the direct sale of inventory to our dealers or other parties. We recognize the related revenue under ASC 606 upon shipment. Shipping and handling costs are included in cost of revenue—inventory sales in the consolidated statements of operations. Solar Renewable Energy Certificates. Each solar renewable energy certificate ("SREC") represents the environmental benefit of one megawatt hour (1,000 kWh) generated by a solar energy system. SRECs can be sold separate from the actual electricity generated by 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 September 30, 2022 and December 31, 2021. We enter into economic hedges related to expected production of SRECs through forward contracts. While these fixed price forward contracts serve as an economic hedge against spot price fluctuations for the SRECs, the contracts do not qualify for hedge accounting and are not designated as cash flow hedges or fair value hedges. 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. Cash Sales. Cash sales revenue represents revenue from a customer's purchase of a solar energy system from us typically when purchasing a new home. We recognize the related revenue under ASC 606 upon verification of the home closing. Loans. See discussion of loan revenue in the " Loans " section below. Other Revenue. Other revenue includes certain state and utility incentives, revenue from the direct sale of solar energy systems and energy storage systems to customers with financing provided by us and sales of service plans. We recognize revenue from state and utility 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 on a straight-line basis over the life of the contract, which is typically 10 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, 15 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 600 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 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 based on the best available data at the time and 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 September 30, 2022, 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 7, 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) payments for unfulfilled performance obligations which will be recognized on a straight-line basis over the remaining term of the respective solar service agreements, net of any cash incentives earned by the customers, (b) down payments and partial or full prepayments from customers and (c) differences due to the timing of energy production versus billing for certain types of PPAs. Deferred revenue was $106.8 million as of December 31, 2020. 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 As of (in thousands) Loans $ 490,510 $ 275,681 PPAs and leases 22,345 17,274 Solar receivables 4,668 4,864 Total (1) $ 517,523 $ 297,819 (1) Of this amount, $24.5 million and $15.3 million is recorded in other current liabilities as of September 30, 2022 and December 31, 2021, respectively. During the nine months ended September 30, 2022 and 2021, we recognized revenue of $5.6 million and $6.6 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 March 2022, the FASB issued Accounting Standards Update ("ASU") No. 2022-02, Financial Instruments—Credit Losses: Troubled Debt Restructurings and Vintage Disclosures , to eliminate the accounting guidance for troubled debt restructurings while enhancing disclosure requirements for certain loan refinancings and restructurings by creditors when a borrower is experiencing financial difficulty. This ASU is effective for annual and interim reporting periods beginning in January 2023. We are currently evaluating the impact of this ASU on our consolidated financial statements and related disclosures.

Property and Equipment

Property and Equipment	9 Months Ended
	Sep. 30, 2022
Property, Plant and Equipment [Abstract]
Property and Equipment	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 As of (in years) (in thousands) Solar energy systems 35 $ 3,442,340 $ 2,917,721 Construction in progress 356,213 188,518 Asset retirement obligations 30 53,168 45,264 Information technology systems 3 52,203 49,673 Computers and equipment 3-5 4,440 3,085 Leasehold improvements 3-6 4,437 3,160 Furniture and fixtures 7 1,132 1,132 Vehicles 4-5 1,638 1,638 Other 5-6 157 157 Property and equipment, gross 3,915,728 3,210,348 Less: accumulated depreciation (378,551) (300,735) Property and equipment, net $ 3,537,177 $ 2,909,613 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 $333.9 million and $264.6 million as of September 30, 2022 and December 31, 2021, respectively.

Natural Disaster Losses

Natural Disaster Losses	9 Months Ended
	Sep. 30, 2022
Unusual or Infrequent Items, or Both [Abstract]
Natural Disaster Losses	Natural Disaster Losses We have insurance coverage related to property damage and business interruption. When a solar energy system is damaged by a natural disaster, we impair all or a portion of the net book value to operations and maintenance expense in the period for which the amount is probable and can be reasonably estimated. Insurance proceeds for property damage, up to the amount of impairment expense recorded for property damage, are estimated and recorded as a receivable (recorded in accounts receivable—other in the consolidated balance sheet) and a reduction to operations and maintenance expense when the receipt of the proceeds is deemed probable. Insurance proceeds for property damage that exceed the amount of impairment expense recorded and insurance proceeds related to business interruption are recorded when received, as a reduction to operations and maintenance expense. Costs incurred to repair or replace a solar energy system are capitalized (recorded in property and equipment, net in the consolidated balance sheet) and are classified as an investing cash outflow in the consolidated statement of cash flows. Insurance proceeds received for property damage are classified as an investing cash inflow in the consolidated statement of cash flows. Insurance proceeds received for business interruption are classified as an operating cash inflow in the consolidated statement of cash flows. Hurricane Fiona in Puerto Rico . In September 2022, Hurricane Fiona made landfall in Puerto Rico causing significant wind and water damage to the island's infrastructure, residences and businesses. A majority of Puerto Rico was left without electrical power. In addition, other basic utility and infrastructure services (such as water, communications, ports and other transportation networks) were severely curtailed. We are currently in the process of assessing the full extent of the damages to our operations, but our preliminary estimates are that we have no material damages to our solar energy systems and energy storage systems. Hurricane Ian in Florida . In September 2022, Hurricane Ian made landfall in Florida causing catastrophic wind and water damage to the state's infrastructure, residences and businesses. We are currently in the process of assessing the full extent of the damages to our operations, but our preliminary estimates are that we have no material damages to our solar energy systems and energy storage systems. During the nine months ended September 30, 2022, we incurred (a) $980,000 related to third-parties helping our customers, primarily restarting batteries and (b) $181,000 related to employees performing similar type work or other work related to the hurricanes. The following table presents the impact of the natural disaster losses as recorded in the unaudited condensed consolidated statements of operations: Nine Months Ended 2022 2021 (in thousands) Operations and maintenance expense: Other natural disaster-related charges $ 980 $ — General and administrative expense: Other natural disaster-related charges 181 — Total $ 1,161 $ —

Detail of Certain Balance Sheet

Detail of Certain Balance Sheet Captions	9 Months Ended
	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Detail of Certain Balance Sheet Captions	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 As of (in thousands) Inventory $ 186,572 $ 127,955 Restricted cash 14,584 80,213 Current portion of customer notes receivable 94,061 56,074 Other prepaid assets 20,858 14,920 Current portion of investments in solar receivables 7,156 6,787 Prepaid inventory 1,065 4,835 Deferred receivables 11,070 4,818 Other 681 719 Total $ 336,047 $ 296,321 The following table presents the detail of other assets as recorded in the unaudited condensed consolidated balance sheets: As of As of (in thousands) Construction in progress - customer notes receivable $ 391,435 $ 238,791 Exclusivity and other bonus arrangements with dealers, net 106,089 81,756 Investments in solar receivables 64,500 75,871 Restricted cash 112,676 68,583 Straight-line revenue adjustment, net 50,699 43,367 Other 195,235 62,768 Total $ 920,634 $ 571,136 The following table presents the detail of other current liabilities as recorded in the unaudited condensed consolidated balance sheets: As of As of (in thousands) Interest payable $ 20,752 $ 22,740 Deferred revenue 24,523 15,273 Current portion of performance guarantee obligations 2,519 3,175 Current portion of operating and finance lease liability 3,002 1,850 Other 297 1,312 Total $ 51,093 $ 44,350

Asset Retirement Obligations ("

Asset Retirement Obligations ("ARO")	9 Months Ended
	Sep. 30, 2022
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligations ("ARO")	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 September 30, 2022 2021 (in thousands) Balance at beginning of period $ 54,396 $ 41,788 Additional obligations incurred 7,962 7,010 Accretion expense 2,687 2,094 Other (79) (69) Balance at end of period $ 64,966 $ 50,823

Customer Notes Receivable

Customer Notes Receivable	9 Months Ended
	Sep. 30, 2022
Receivables [Abstract]
Customer Notes Receivable	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 for a term of 10, 15 or 25 years. The following table presents the detail of customer notes receivable as recorded in the unaudited condensed consolidated balance sheets and the corresponding fair values: As of As of (in thousands) Customer notes receivable $ 2,234,312 $ 1,301,285 Allowance for credit losses (67,988) (41,138) Customer notes receivable, net (1) $ 2,166,324 $ 1,260,147 Estimated fair value, net $ 2,172,904 $ 1,274,099 (1) Of this amount, $94.1 million and $56.1 million is recorded in other current assets as of September 30, 2022 and December 31, 2021, 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 Nine Months Ended 2022 2021 2022 2021 (in thousands) Balance at beginning of period $ 57,043 $ 26,018 $ 41,138 $ 17,668 Provision for current expected credit losses (1) 10,945 6,518 26,814 14,867 Recoveries — — 36 — Other, net — (1) — — Balance at end of period $ 67,988 $ 32,535 $ 67,988 $ 32,535 (1) In addition, we recognized $22,000 and $49,000 during the three months ended September 30, 2022 and 2021, respectively, and $67,000 and $165,000 during the nine months ended September 30, 2022 and 2021, respectively, of provision for current expected credit losses related to our long-term receivables for our customer leases. As of September 30, 2022 and December 31, 2021, we invested $391.4 million and $238.8 million, respectively, in loan solar energy systems and energy storage systems not yet placed in service. For the three months ended September 30, 2022 and 2021, interest income related to our customer notes receivable was $15.1 million and $8.9 million, respectively. For the nine months ended September 30, 2022 and 2021, interest income related to our customer notes receivable was $39.1 million and $23.9 million, respectively. As of September 30, 2022 and December 31, 2021, accrued interest receivable related to our customer notes receivable was $5.5 million and $3.5 million, respectively. As of September 30, 2022 and December 31, 2021, there was $9.0 million and $0, respectively, of customer notes receivable not accruing interest and there was $196,000 and $0, respectively, of allowance recorded for loans on nonaccrual status. For the three months ended September 30, 2022 and 2021, interest income of $0 was recognized for loans on nonaccrual status and accrued interest receivable of $8,000 and $0, respectively, was written off by reversing interest income. For the nine months ended September 30, 2022 and 2021, interest income of $0 was recognized for loans on nonaccrual status and accrued interest receivable of $505,000 and $0, respectively, was written off by reversing interest income. 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 As of (in thousands) 1-90 days past due $ 49,973 $ 23,118 91-180 days past due 10,954 5,068 Greater than 180 days past due 11,163 10,277 Total past due 72,090 38,463 Not past due 2,162,222 1,262,822 Total $ 2,234,312 $ 1,301,285 As of September 30, 2022 and December 31, 2021, the amortized cost of our customer notes receivable more than 90 days past due but not on nonaccrual status was $22.1 million and $15.3 million, respectively. The following table presents the amortized cost by origination year of our customer notes receivable based on payment activity. Amortized Cost by Origination Year 2022 2021 2020 2019 2018 Prior Total (in thousands) Payment performance: Performing $ 992,684 $ 750,087 $ 229,865 $ 118,039 $ 77,315 $ 55,159 $ 2,223,149 Nonperforming (1) 491 5,970 1,454 1,626 1,161 461 11,163 Total $ 993,175 $ 756,057 $ 231,319 $ 119,665 $ 78,476 $ 55,620 $ 2,234,312 (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 181 days or more.

Long-Term Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2022
Debt Disclosure [Abstract]
Long-Term Debt	Long-Term Debt Our subsidiaries with long-term debt include Sunnova Energy Corporation, Sunnova EZ-Own Portfolio, LLC ("EZOP"), Sunnova Helios II Issuer, LLC ("HELII"), Sunnova RAYS I Issuer, LLC ("RAYSI"), Sunnova Helios III Issuer, LLC ("HELIII"), Sunnova TEP Holdings, LLC ("TEPH"), Sunnova Sol Issuer, LLC ("SOLI"), Sunnova Helios IV Issuer, LLC ("HELIV"), Sunnova Asset Portfolio 8, LLC ("AP8"), Sunnova Sol II Issuer, LLC ("SOLII"), Sunnova Helios V Issuer, LLC ("HELV"), Sunnova Sol III Issuer, LLC ("SOLIII"), Sunnova Helios VI Issuer, LLC ("HELVI"), Sunnova Helios VII Issuer, LLC ("HELVII"), Sunnova Helios VIII Issuer, LLC ("HELVIII"), Sunnova Sol IV Issuer, LLC ("SOLIV") and Sunnova Helios IX Issuer, LLC ("HELIX"). The following table presents the detail of long-term debt, net as recorded in the unaudited condensed consolidated balance sheets: Nine Months Ended As of September 30, 2022 Year Ended As of December 31, 2021 Long-term Current Long-term Current (in thousands, except interest rates) SEI 0.25% convertible senior notes 0.71 % $ 575,000 $ — 0.70 % $ 575,000 $ — 2.625% convertible senior notes 3.38 % 600,000 — — — Debt discount, net (25,596) — (12,810) — Deferred financing costs, net (916) — (547) — Sunnova Energy Corporation 5.875% senior notes 6.54 % 400,000 — 6.42 % 400,000 — Debt discount, net (3,885) — (4,629) — Deferred financing costs, net (7,846) — (9,341) — EZOP Revolving credit facility 4.40 % 409,000 — 4.12 % 190,000 — Debt discount, net (602) — (898) — HELII Solar asset-backed notes 5.72 % 204,016 8,632 5.71 % 217,465 8,952 Debt discount, net (31) — (36) — Deferred financing costs, net (3,763) — (4,346) — RAYSI Solar asset-backed notes 5.56 % 107,538 9,120 5.55 % 115,792 4,573 Debt discount, net (1,006) — (1,166) — Deferred financing costs, net (3,558) — (3,893) — HELIII Solar loan-backed notes 4.43 % 96,700 10,555 4.79 % 105,331 10,916 Debt discount, net (1,610) — (1,838) — Deferred financing costs, net (1,546) — (1,765) — TEPH Revolving credit facility 7.23 % 317,200 — 6.86 % 118,950 — Debt discount, net (2,310) — (3,678) — SOLI Solar asset-backed notes 3.93 % 353,484 15,998 3.91 % 366,304 15,563 Debt discount, net (90) — (100) — Deferred financing costs, net (7,093) — (7,881) — HELIV Solar loan-backed notes 4.17 % 107,550 11,659 4.16 % 116,579 11,937 Debt discount, net (602) — (724) — Deferred financing costs, net (2,772) — (3,283) — AP8 Revolving credit facility — % — — 7.17 % — — SOLII Solar asset-backed notes 3.42 % 234,214 6,379 3.42 % 241,293 6,176 Debt discount, net (66) — (72) — Deferred financing costs, net (4,730) — (5,192) — HELV Solar loan-backed notes 2.47 % 145,470 15,590 2.44 % 150,743 21,354 Debt discount, net (728) — (840) — Deferred financing costs, net (2,803) — (3,230) — SOLIII Solar asset-backed notes 2.79 % 281,098 16,561 2.73 % 294,069 16,590 Debt discount, net (121) — (132) — Deferred financing costs, net (5,799) — (6,319) — HELVI Solar loan-backed notes 2.09 % 168,510 19,289 2.02 % 181,625 21,152 Debt discount, net (42) — (48) — Deferred financing costs, net (3,051) — (3,477) — HELVII Solar loan-backed notes 2.50 % 129,349 16,026 2.44 % 141,407 12,580 Debt discount, net (40) — (45) — Deferred financing costs, net (2,294) — (2,587) — HELVIII Solar loan-backed notes 3.54 % 253,739 30,221 — — Debt discount, net (5,487) — — — Deferred financing costs, net (4,250) — — — SOLIV Solar asset-backed notes 5.70 % 341,900 7,932 — — Debt discount, net (11,620) — — — Deferred financing costs, net (8,305) — — — HELIX Solar loan-backed notes 5.41 % 202,043 23,169 — — Debt discount, net (3,725) — — — Deferred financing costs, net (3,417) — — — Total $ 4,807,107 $ 191,131 $ 3,135,681 $ 129,793 Availability. As of September 30, 2022, we had $348.5 million of available borrowing capacity under our various financing arrangements, consisting of $41.0 million under the EZOP revolving credit facility, $247.5 million under the TEPH revolving credit facility and $60.0 million under the AP8 revolving credit facility. There was no available borrowing capacity under any of our other financing arrangements. As of September 30, 2022, 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. HELVIII Debt. In February 2022, we pooled and transferred eligible solar loans and the related receivables into HELVIII, a special purpose entity, that issued $131.9 million in aggregate principal amount of Series 2022-A Class A solar loan-backed notes, $102.2 million in aggregate principal amount of Series 2022-A Class B solar loan-backed notes and $63.8 million in aggregate principal amount of Series 2022-A Class C solar loan-backed notes (collectively, the "HELVIII Notes") with a maturity date of February 2049. The HELVIII Notes were issued at a discount of 1.55% for Class A, 2.23% for Class B and 2.62% for Class C and bear interest at an annual rate of 2.79%, 3.13% and 3.53%, respectively. The cash flows generated by these solar loans are used to service the monthly principal and interest payments on the HELVIII Notes and satisfy HELVIII's expenses, and any remaining cash can be distributed to Sunnova Helios VIII Depositor, LLC, HELVIII's sole member. In connection with the HELVIII 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 HELVIII pursuant to the related sale and contribution agreement. HELVIII is also required to maintain certain reserve accounts for the benefit of the holders of the HELVIII Notes, each of which must be funded at all times to the levels specified in the HELVIII Notes. The holders of the HELVIII Notes have no recourse to our other assets except as expressly set forth in the HELVIII Notes. EZOP Debt . In June 2022, we amended the EZOP revolving credit facility to, among other things, (a) extend the scheduled commitment termination date to May 2024, (b) extend the facility maturity date to November 2024, (c) increase the aggregate commitment amount from $200.0 million to $400.0 million, subject to reductions based on the outstanding principal balance of advances over certain time periods, (d) increase the uncommitted maximum facility amount from $350.0 million to $475.0 million, (e) modify the interest rate on borrowings from accruing based on the London Inter-Bank Offered Rate to accruing based on a forward-looking term rate based on the secured overnight financing rate ("Term SOFR"), plus a Term SOFR spread adjustment, (f) add an amortization event related to certain of our subsidiaries ceasing to originate solar loans (subject to certain thresholds, time periods and exceptions set forth therein), (g) add concentration limits for solar loans (1) with obligors with credit scores below certain thresholds and (2) for which the original principal balance exceeds a certain threshold and (h) modify eligibility requirements for solar loans to increase the permitted maximum original principal balance. In July 2022, we amended the EZOP revolving credit facility to, among other things, increase the uncommitted maximum facility amount from $475.0 million to $535.0 million until the earlier to occur of (a) September 29, 2022 and (b) the date upon which a specific sale of borrowing base assets and a related prepayment of outstanding debt thereunder occurs, upon the occurrence of which the uncommitted maximum facility amount will return to $475.0 million. In August 2022, we amended the EZOP revolving credit facility to, among other things, (a) increase the aggregate commitment amount from $400.0 million to $450.0 million, (b) increase the uncommitted maximum facility amount from $535.0 million to $585.0 million, (c) amend certain provisions addressing the allocation of advances and principal payments among the lenders, (d) amend certain provisions addressing lender consent rights and related matters and (e) include certain provisions addressing service incentives and related matters. In August 2022, proceeds from the HELIX Notes (as defined below) were used to repay $151.0 million in aggregate principal amount of outstanding EZOP debt. In September 2022, we amended the EZOP revolving credit facility to, among other things, (a) decrease the uncommitted maximum facility amount from $585.0 million to $575.0 million and (b) amend certain provisions related to the agent's allocation of certain payments made to the lenders. SOLIV Debt . In June 2022, we pooled and transferred eligible solar energy systems and the related asset receivables into wholly-owned subsidiaries of SOLIV, a special purpose entity, that issued $317.0 million in aggregate principal amount of Series 2022-1 Class A solar asset-backed notes and $38.0 million in aggregate principal amount of Series 2022-1 Class B solar asset-backed notes (collectively, the "SOLIV Notes") with a maturity date of April 2057. The SOLIV Notes were issued at a discount of 3.55% and 2.10%, respectively, and bear interest at an annual rate equal to 4.95% and 6.35%, respectively. The cash flows generated by the solar energy systems of SOLIV's subsidiaries are used to service the quarterly principal and interest payments on the SOLIV Notes and satisfy SOLIV's expenses, and any remaining cash can be distributed to Sunnova Sol IV Depositor, LLC, SOLIV's sole member. In connection with the SOLIV Notes, certain of our affiliates receive a fee for managing and servicing the solar energy systems pursuant to a transaction management agreement and management 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 a transaction management agreement and management and servicing 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 SOLIV pursuant to the sale and contribution agreement. SOLIV is also required to maintain certain reserve accounts for the benefit of the holders of the SOLIV Notes, each of which must remain funded at all times to the levels specified in the SOLIV Notes. The indenture requires SOLIV to track the debt service coverage ratio (such ratio, the "DSCR") of (a) the amount of certain payments received from customers, certain performance based incentives, certain energy credits and any applicable insurance proceeds as of a specific date to (b) interest and scheduled principal due on the SOLIV Notes as of such date, with the potential to enter into an early amortization period if the DSCR drops below a certain threshold. The holders of the SOLIV Notes have no recourse to our other assets except as expressly set forth in the SOLIV Notes. TEPH Debt . In June 2022, proceeds from the SOLIV Notes were used to repay $271.0 million in aggregate principal amount of outstanding TEPH debt. In September 2022, we amended the TEPH revolving credit facility to, among other things, (a) increase the aggregate commitment amount from $460.7 million to $564.7 million, (b) increase the uncommitted maximum facility amount from $600.0 million to $639.7 million, (c) extend the facility maturity date to November 2024, (d) amend certain excess concentration limitations, (e) replace the London interbank offered rate with the forward-looking term rate based on the secured overnight financing rate as the interest rate benchmark and include benchmark replacement provisions and (f) include certain provisions addressing grid services revenue and related matters. See Note 16, Subsequent Events. HELIX Debt. In August 2022, we pooled and transferred eligible solar loans and the related receivables into HELIX, a special purpose entity, that issued $178.0 million in aggregate principal amount of Series 2022-B Class A solar loan-backed notes and $49.7 million in aggregate principal amount of Series 2022-B Class B solar loan-backed notes (collectively, the "HELIX Notes") with a maturity date of August 2049. The HELIX Notes were issued at a discount of 0.69% for Class A and 5.10% for Class B and bear interest at an annual rate of 5.00% and 6.00%, respectively. The cash flows generated by these solar loans are used to service the monthly principal and interest payments on the HELIX Notes and satisfy HELIX's expenses, and any remaining cash can be distributed to Sunnova Helios IX Depositor, LLC, HELIX's sole member. In connection with the HELIX 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 HELIX pursuant to the related sale and contribution agreement. HELIX is also required to maintain certain reserve accounts for the benefit of the holders of the HELIX Notes, each of which must be funded at all times to the levels specified in the HELIX Notes. The holders of the HELIX Notes have no recourse to our other assets except as expressly set forth in the HELIX Notes. SEI Debt . In August 2022, we issued and sold an aggregate principal amount of $600.0 million of our 2.625% convertible senior notes ("2.625% convertible senior notes") in a private placement at a discount to the initial purchasers of 2.5%, for an aggregate purchase price of $585.0 million. The 2.625% convertible senior notes mature in February 2028 unless earlier redeemed, repurchased or converted. In connection with the pricing of the 2.625% convertible senior notes, we used proceeds of $48.4 million to enter into privately negotiated capped call transactions, which are expected to reduce the potential dilution to common shares and/or offset potential cash payments that could be required to be made in excess of the principal amount upon any exchange of notes. Such reduction and/or offset is subject to a cap initially equal to $34.24 per share, subject to adjustments. The capped call transactions cover, subject to customary adjustments, the number of shares of our common stock initially underlying the 2.625% convertible senior notes. As the capped call transactions meet certain accounting criteria, they are classified as stockholders' equity and therefore, are recorded in additional paid-in capital—common stock in the consolidated balance sheet and are not accounted for as derivatives. Fair Values of Long-Term Debt . The fair values of our long-term debt and the corresponding carrying amounts are as follows: As of September 30, 2022 As of December 31, 2021 Carrying Estimated Carrying Estimated (in thousands) SEI 0.25% convertible senior notes $ 575,000 $ 522,821 $ 575,000 $ 568,732 SEI 2.625% convertible senior notes 600,000 593,971 — — Sunnova Energy Corporation 5.875% senior notes 400,000 365,699 400,000 391,917 EZOP revolving credit facility 409,000 409,000 190,000 190,000 HELII solar asset-backed notes 212,648 208,627 226,417 253,079 RAYSI solar asset-backed notes 116,658 106,933 120,365 129,575 HELIII solar loan-backed notes 107,255 97,083 116,247 120,465 TEPH revolving credit facility 317,200 317,200 118,950 118,950 SOLI solar asset-backed notes 369,482 320,655 381,867 382,511 HELIV solar loan-backed notes 119,209 105,559 128,516 123,189 SOLII solar asset-backed notes 240,593 193,442 247,469 231,894 HELV solar loan-backed notes 161,060 141,723 172,097 165,848 SOLIII solar asset-backed notes 297,659 245,034 310,659 302,994 HELVI solar loan-backed notes 187,799 161,195 202,777 199,159 HELVII solar loan-backed notes 145,375 127,664 153,987 153,518 HELVIII solar loan-backed notes 283,960 257,707 — — SOLIV solar asset-backed notes 349,832 342,301 — — HELIX solar loan-backed notes 225,212 214,374 — — Total (1) $ 5,117,942 $ 4,730,988 $ 3,344,351 $ 3,331,831 (1) Amounts exclude the net deferred financing costs (classified as debt) and net debt discounts of $119.7 million and $78.9 million as of September 30, 2022 and December 31, 2021, respectively. For the EZOP, TEPH and AP8 debt, the estimated fair values approximate the carrying amounts primarily due to the variable nature of the interest rates of the underlying instruments. For the convertible senior notes, senior notes and the HELII, RAYSI, HELIII, SOLI, HELIV, SOLII, HELV, SOLIII, HELVI, HELVII, HELVIII, SOLIV and HELIX debt, we determined the estimated fair values based on a yield analysis of similar type debt.

Derivative Instruments

Derivative Instruments	9 Months Ended
	Sep. 30, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Derivative Instruments Interest Rate Swaps and Caps on EZOP Debt. During the nine months ended September 30, 2022 and 2021, EZOP entered into interest rate swaps and caps for an aggregate notional amount of $506.6 million and $180.2 million, respectively, to economically hedge its exposure to the variable interest rates on a portion of the outstanding EZOP debt. No collateral was posted for the interest rate swaps and caps as they are secured under the EZOP revolving credit facility. In July 2022, the notional amount of the interest rate swaps and caps began decreasing to match EZOP's estimated monthly principal payments on the debt. During the nine months ended September 30, 2022 and 2021, EZOP unwound interest rate swaps and caps with an aggregate notional amount of $360.2 million and $131.7 million, respectively, and recorded a realized gain of $19.6 million and a realized loss of $68,000, respectively. Interest Rate Swaps and Caps on TEPH Debt. During the nine months ended September 30, 2022 and 2021, TEPH entered into interest rate swaps and caps for an aggregate notional amount of $333.7 million and $236.3 million, respectively, to economically hedge its exposure to the variable interest rates on a portion of the outstanding TEPH debt. No collateral was posted for the interest rate swaps and caps as they are secured under the TEPH revolving credit facility. In October 2023, the notional amount of the interest rate swaps will begin decreasing to match TEPH's estimated quarterly principal payments on the debt. During the nine months ended September 30, 2022 and 2021, TEPH unwound interest rate swaps and caps with an aggregate notional amount of $515.4 million and $121.3 million, respectively, and recorded a realized gain of $27.8 million and a realized loss of $1.6 million, respectively. The following table presents a summary of the outstanding derivative instruments: As of September 30, 2022 As of December 31, 2021 Effective Termination Fixed Aggregate Effective Termination Fixed Aggregate (in thousands, except interest rates) EZOP June 2022 - July 2034 0.890% $ 499,215 March 2021 - July 2033 - 1.000% $ 261,836 TEPH July 2022 January 2035 - 1.750% - 2.650% 333,749 February 2019 - January 2023 - 0.121% - 2.534% 270,170 Total $ 832,964 $ 532,006 The following table presents the fair value of the interest rate swaps and caps as recorded in the unaudited condensed consolidated balance sheets: As of As of (in thousands) Other assets $ 117,544 $ 14,351 Other long-term liabilities — (5,330) Total, net $ 117,544 $ 9,021 We did not designate the interest rate swaps and caps 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 and caps as recorded in the unaudited condensed consolidated statements of operations: Three Months Ended Nine Months Ended 2022 2021 2022 2021 (in thousands) Realized (gain) loss $ (1,928) $ 586 $ (47,434) $ 1,693 Unrealized gain (29,059) (2,642) (35,685) (5,574) Total $ (30,987) $ (2,056) $ (83,119) $ (3,881)

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Income Taxes	Income TaxesOur effective income tax rate is 0% for the three and nine months ended September 30, 2022 and 2021. 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 September 30, 2022 and December 31, 2021 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 by the taxing authorities in the states and territories in which we operate.

Redeemable Noncontrolling Inter

Redeemable Noncontrolling Interests and Noncontrolling Interests	9 Months Ended
	Sep. 30, 2022
Noncontrolling Interest [Abstract]
Redeemable Noncontrolling Interests and Noncontrolling Interests	Redeemable Noncontrolling Interests and Noncontrolling Interests Redeemable Noncontrolling Interests In May 2022, we admitted a tax equity investor as the Class A member of Sunnova TEP 6-E, LLC ("TEP6E"), a subsidiary of Sunnova TEP 6-E Manager, LLC, which is the Class B member of TEP6E. The Class A member of TEP6E made a total capital commitment of approximately $17.5 million. The carrying values of the redeemable noncontrolling interests were equal to or greater than the redemption values as of September 30, 2022 and December 31, 2021. See Note 16, Subsequent Events. Noncontrolling Interests In February 2022, we admitted a tax equity investor as the Class A member of Sunnova TEP 6-B, LLC ("TEP6B"), a subsidiary of Sunnova TEP 6-B Manager, LLC, which is the Class B member of TEP6B. The Class A member of TEP6B made a total capital commitment of approximately $150.0 million. In September 2022, we admitted a tax equity investor as the Class A member of Sunnova TEP 6-D, LLC ("TEP6D"), a subsidiary of Sunnova TEP 6-D Manager, LLC, which is the Class B member of TEP6D. The Class A member of TEP6D made a total capital commitment of approximately $25.0 million. See Note 16, Subsequent Events.

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2022
Equity [Abstract]
Stockholders' Equity	Stockholders' Equity In April 2022, we issued 694,446 shares of our common stock to Len x , LLC pursuant to the terms of the earnout agreement entered into in connection with the SunStreet acquisition.

Equity-Based Compensation

Equity-Based Compensation	9 Months Ended
	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
Equity-Based Compensation	Equity-Based Compensation In February 2022, the aggregate number of shares of common stock that may be issued pursuant to awards under the 2019 Long-Term Incentive Plan (the "LTIP") was increased by 1,265,071, an amount which, together with the shares remaining available for grant under the LTIP, is equal to 5,667,761, or 5% of the number of shares of common stock outstanding as of December 31, 2021. Stock Options The following table summarizes stock option activity: Number Weighted Weighted Weighted Aggregate (in thousands) Outstanding, December 31, 2021 2,765,815 $ 16.71 4.91 $ 31,874 Granted 538,758 $ 27.62 9.48 $ 14.37 Exercised (2,884) $ 10.14 $ 46 Forfeited (1,966) $ 40.14 $ 18.15 Outstanding, September 30, 2022 3,299,723 $ 18.48 5.02 $ 18,379 Exercisable, September 30, 2022 2,710,515 $ 16.26 4.07 $ 18,379 Vested and expected to vest, September 30, 2022 3,299,723 $ 18.48 5.02 $ 18,379 Non-vested, September 30, 2022 589,208 $ 14.71 The number of stock options that vested during the three months ended September 30, 2022 and 2021 was 0. The number of stock options that vested during the nine months ended September 30, 2022 and 2021 was 16,816 and 0, respectively. The grant date fair value of stock options that vested during the three months ended September 30, 2022 and 2021 was $0. The grant date fair value of stock options that vested during the nine months ended September 30, 2022 and 2021 was $309,000 and $0, respectively. As of September 30, 2022, there was $7.0 million of total unrecognized compensation expense related to stock options, which is expected to be recognized over the remaining weighted average period of 2.13 years. Restricted Stock Units The following table summarizes restricted stock unit activity: Number of Weighted Outstanding, December 31, 2021 1,649,789 $ 18.48 Granted 1,015,949 $ 23.85 Vested (948,404) $ 19.47 Forfeited (62,939) $ 25.86 Outstanding, September 30, 2022 1,654,395 $ 20.93 The number of restricted stock units that vested during the three months ended September 30, 2022 and 2021 was 245,740 and 240,010, respectively. The number of restricted stock units that vested during the nine months ended September 30, 2022 and 2021 was 948,404 and 913,434, respectively. The grant date fair value of restricted stock units that vested during the three months ended September 30, 2022 and 2021 was $3.4 million and $2.9 million, respectively. The grant date fair value of restricted stock units that vested during the nine months ended September 30, 2022 and 2021 was $18.5 million and $15.3 million, respectively. As of September 30, 2022, there was $27.1 million of total unrecognized compensation expense related to restricted stock units, which is expected to be recognized over the remaining weighted average period of 1.55 years. Employee Stock Purchase Plan Effective May 2022, we established an Employee Stock Purchase Plan (the "ESPP"). We are authorized to issue up to an aggregate 750,000 shares of common stock under the ESPP. The ESPP allows eligible employees (as defined in the ESPP) to purchase shares of our common stock at a price per share equal to 95% of the lesser of the closing price of our common stock on the grant date or the purchase date. No shares of common stock were issued under the ESPP as of September 30, 2022.

Basic and Diluted Net Loss Per

Basic and Diluted Net Loss Per Share	9 Months Ended
	Sep. 30, 2022
Earnings Per Share [Abstract]
Basic and Diluted Net Loss Per Share	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 Nine Months Ended 2022 2021 2022 2021 (in thousands, except share and per share amounts) Net loss attributable to common stockholders—basic and diluted $ (62,047) $ (27,541) $ (132,633) $ (123,920) Net loss per share attributable to common stockholders—basic and diluted $ (0.54) $ (0.25) $ (1.16) $ (1.12) Weighted average common shares outstanding—basic and diluted 114,816,879 112,159,698 114,293,251 110,185,333 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 Nine Months Ended 2022 2021 2022 2021 Equity-based compensation awards 5,033,658 4,574,364 4,906,182 4,727,081 Convertible senior notes 25,294,010 16,628,073 19,548,462 8,875,206

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	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 September 30, 2022, we recorded $3.9 million related to our guarantee of certain specified minimum solar energy production output under our leases and loans, of which $2.5 million is recorded in other current liabilities and $1.4 million is recorded in other long-term liabilities in the unaudited condensed consolidated balance sheet. As of December 31, 2021, we recorded $5.3 million related to these guarantees, of which $3.2 million is recorded in other current liabilities and $2.1 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 September 30, 2022 2021 (in thousands) Balance at beginning of period $ 5,293 $ 5,718 Accruals 1,811 2,323 Settlements (3,170) (3,275) Balance at end of period $ 3,934 $ 4,766 Operating and Finance Leases . We lease real estate and certain office equipment under operating leases and vehicles and certain other office equipment under finance leases. The following table presents the detail of lease expense as recorded in general and administrative expense in the unaudited condensed consolidated statements of operations: Three Months Ended Nine Months Ended 2022 2021 2022 2021 (in thousands) Operating lease expense $ 676 $ 401 $ 2,061 $ 1,164 Finance lease expense: Amortization expense 201 157 562 251 Interest on lease liabilities 15 14 42 24 Short-term lease expense 37 29 97 51 Variable lease expense 190 274 712 831 Total $ 1,119 $ 875 $ 3,474 $ 2,321 The following table presents the detail of right-of-use assets and lease liabilities as recorded in other assets other current liabilities other long-term liabilities As of As of (in thousands) Right-of-use assets: Operating leases $ 15,193 $ 16,483 Finance leases 2,384 2,187 Total right-of-use assets $ 17,577 $ 18,670 Current lease liabilities: Operating leases $ 2,267 $ 1,190 Finance leases 735 660 Long-term leases liabilities: Operating leases 16,136 17,684 Finance leases 963 1,024 Total lease liabilities $ 20,101 $ 20,558 Other information related to leases was as follows: Nine Months Ended 2022 2021 (in thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases (1) $ 1,242 $ 883 Operating cash flows from finance leases $ 42 $ 24 Financing cash flows from finance leases $ 601 $ 283 Right-of-use assets obtained in exchange for lease obligations: Operating leases $ 226 $ 452 Finance leases $ 758 $ 2,089 (1) Includes reimbursements in 2022 and 2021 of approximately $45,000 and $423,000, respectively, for leasehold improvements. As of As of Weighted average remaining lease term (years): Operating leases 6.85 7.54 Finance leases 2.93 3.35 Weighted average discount rate: Operating leases 3.95 % 3.92 % Finance leases 3.83 % 3.11 % Future minimum lease payments under our non-cancelable leases as of September 30, 2022 were as follows: Operating Finance (in thousands) Remaining 2022 $ 653 $ 205 2023 3,133 750 2024 3,118 542 2025 3,168 248 2026 3,236 44 2027 and thereafter 8,789 — Total 22,097 1,789 Amount representing interest (2,821) (91) Amount representing leasehold incentives (873) — Present value of future payments 18,403 1,698 Current portion of lease liability (2,267) (735) Long-term portion of lease liability $ 16,136 $ 963 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 September 30, 2022 and December 31, 2021, the net unamortized balance of payments to dealers for exclusivity and other similar arrangements was $106.1 million and $81.8 million, respectively. Under these agreements, we paid $6.7 million and $5.8 million during the three months ended September 30, 2022 and 2021, respectively, and we paid $33.6 million and $25.7 million during the nine months ended September 30, 2022 and 2021, 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 (in thousands) Remaining 2022 $ 3,528 2023 35,977 2024 37,755 2025 27,971 2026 6,904 2027 and thereafter — Total $ 112,135 Purchase Commitments. In December 2021, we amended an agreement with a supplier in which we agreed to purchase at least 1,420 megawatt hours of solar energy systems, energy storage systems and accessories through December 2023. The amendment does not contain specific dollar amounts or thresholds; however, as of September 30, 2022, we estimate these remaining purchase commitments will range from $480.0 million to $520.0 million. During the three and nine months ended September 30, 2022, we purchased $55.4 million and $141.1 million, respectively, under this agreement. Information Technology Commitments. We have certain long-term contractual commitments related to information technology software services and licenses. Future commitments as of September 30, 2022 were as follows: Information (in thousands) Remaining 2022 $ 16,011 2023 22,918 2024 5,612 2025 18 2026 — 2027 and thereafter — Total $ 44,559

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2022
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events TEPH Debt. In October 2022, we amended the TEPH revolving credit facility to, among other things, (a) increase the aggregate commitment amount from $564.7 million to $600.0 million and (b) increase the uncommitted maximum facility amount from $639.7 million to $689.7 million. Redeemable Noncontrolling Interests. In October 2022, we admitted a tax equity investor as the Class A member of Sunnova TEP 6-C, LLC ("TEP6C"), a subsidiary of Sunnova TEP 6-C Manager, LLC, which is the Class B member of TEP6C. The Class A member of TEP6C made a total capital commitment of approximately $30.0 million. Noncontrolling Interests. In October 2022, the Class A member of TEP6D increased its capital commitment from $25.0 million to $75.0 million.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
Basis of Presentation	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 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 2021 annual audited consolidated financial statements and accompanying notes included in our Annual Report on Form 10-K filed with the SEC on February 24, 2022. 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 our continual growth, seasonal fluctuations in demand for power, timing of maintenance and other expenditures, changes in interest expense and other factors. Our interim financial statements include our accounts 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 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 holding a majority of the voting interests. A primary beneficiary is defined as the party that has (a) the power to direct the activities of a VIE that most significantly impact the VIE's economic performance and (b) the obligation to absorb losses or receive benefits from the VIE that could potentially be significant to the VIE. We do not
Reclassifications	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.
Use of Estimates	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 ReceivableAccounts Receivable—Trade. Accounts receivable—trade primarily represents trade receivables from residential customers 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 based on the best available data at the time. 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. Accounts Receivable—Other. Accounts receivable—other primarily represents receivables from our dealers or other parties related to the sale of inventory and the use of inventory procured by us.
Inventory	InventoryInventory is stated at the lower of cost and net realizable value using the first-in, first-out method. Inventory primarily represents (a) raw materials, such as energy storage systems, photovoltaic modules, inverters, meters and modems, (b) homebuilder construction in progress and (c) other associated equipment purchased. These materials are typically procured by us and used by our dealers, sold to our dealers or held for use as original parts on new solar energy systems or replacement parts on existing solar energy systems. We remove these items from inventory and record the transaction in typically one of these manners: (a) expense to operations and maintenance expense when installed as a replacement part for a solar energy system, (b) recognize in accounts receivable—other when procured by us and used by our dealers, (c) expense to cost of revenue—inventory sales if sold directly to a dealer or other party, (d) capitalize to property and equipment when installed on an existing home or (e) capitalize to property and equipment when placed in service under the homebuilder program. We periodically evaluate our inventory for unusable and obsolete items based on assumptions about future demand and market conditions. Based on this evaluation, provisions are made to write inventory down to net realizable value.
Fair Value of Financial Instruments	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 cash, accounts receivable, customer notes receivable, investments in solar receivables, accounts payable, accrued expenses, long-term debt, interest rate swaps and contingent consideration. 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 and based on quoted market prices in active markets for identical assets or liabilities that are accessible at the measurement date (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 investments in solar receivables based on a discounted cash flows model that utilizes market data related to solar irradiance, production factors by region and projected electric utility rates in order to build up revenue projections (Level 3). In addition, lease-related revenue and maintenance and service costs were supported through the use of available market studies and data. 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). For contingent consideration, we estimate the fair value of the installation earnout using the Monte Carlo model based on the forecasted placements for the installations and the microgrid earnout using a scenario-based methodology based on the probabilities of the microgrid earnout, both using Level 3 inputs. See Note 7, Customer Notes Receivable, Note 8, Long-Term Debt and Note 9, Derivative Instruments.
Revenue / Loans / Deferred Revenue	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, net of cash incentives. 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 $2.7 billion as of September 30, 2022, 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 four years. Certain customers may receive cash incentives. We defer recognition of the payment of these cash incentives and recognize them over the life of the contract as a reduction to revenue. The deferred payment is recorded in other assets for customers who receive the cash incentives under our lease and PPA agreements, and as a contra-liability in other long-term liabilities for customers who receive the cash incentives under our loan agreements. 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 20 or 25 years with an opportunity for customers to renew for up to an additional 10 years, via two five-year or one 10-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 20 or 25 years with an opportunity for customers to renew for up to an additional 10 years, via two five-year or one 10-year renewal options. In most cases, 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 related 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 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 customer's payments, if needed, are payable as early as the first anniversary of the solar energy system's placed in service date and then every annual period thereafter. See Note 15, Commitments and Contingencies. Inventory Sales . Inventory sales revenue represents revenue from the direct sale of inventory to our dealers or other parties. We recognize the related revenue under ASC 606 upon shipment. Shipping and handling costs are included in cost of revenue—inventory sales in the consolidated statements of operations. Solar Renewable Energy Certificates. Each solar renewable energy certificate ("SREC") represents the environmental benefit of one megawatt hour (1,000 kWh) generated by a solar energy system. SRECs can be sold separate from the actual electricity generated by 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 September 30, 2022 and December 31, 2021. We enter into economic hedges related to expected production of SRECs through forward contracts. While these fixed price forward contracts serve as an economic hedge against spot price fluctuations for the SRECs, the contracts do not qualify for hedge accounting and are not designated as cash flow hedges or fair value hedges. 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. Cash Sales. Cash sales revenue represents revenue from a customer's purchase of a solar energy system from us typically when purchasing a new home. We recognize the related revenue under ASC 606 upon verification of the home closing. Loans. See discussion of loan revenue in the " Loans " section below. Other Revenue. Other revenue includes certain state and utility incentives, revenue from the direct sale of solar energy systems and energy storage systems to customers with financing provided by us and sales of service plans. We recognize revenue from state and utility 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 on a straight-line basis over the life of the contract, which is typically 10 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, 15 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 600 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 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 based on the best available data at the time and 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 September 30, 2022, 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 7, Customer Notes Receivable. Deferred Revenue
New Accounting Guidance	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 March 2022, the FASB issued Accounting Standards Update ("ASU") No. 2022-02, Financial Instruments—Credit Losses: Troubled Debt Restructurings and Vintage Disclosures , to eliminate the accounting guidance for troubled debt restructurings while enhancing disclosure requirements for certain loan refinancings and restructurings by creditors when a borrower is experiencing financial difficulty. This ASU is effective for annual and interim reporting periods beginning in January 2023. We are currently evaluating the impact of this ASU on our consolidated financial statements and related disclosures.

Significant Accounting Polici_3

Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
Changes in the allowance for credit losses	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 Nine Months Ended 2022 2021 2022 2021 (in thousands) Balance at beginning of period $ 1,198 $ 858 $ 1,044 $ 912 Provision for current expected credit losses 802 485 1,891 1,322 Write off of uncollectible accounts (717) (424) (1,769) (1,410) Recoveries 83 54 200 148 Other, net — — — 1 Balance at end of period $ 1,366 $ 973 $ 1,366 $ 973 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 Nine Months Ended 2022 2021 2022 2021 (in thousands) Balance at beginning of period $ 57,043 $ 26,018 $ 41,138 $ 17,668 Provision for current expected credit losses (1) 10,945 6,518 26,814 14,867 Recoveries — — 36 — Other, net — (1) — — Balance at end of period $ 67,988 $ 32,535 $ 67,988 $ 32,535 (1) In addition, we recognized $22,000 and $49,000 during the three months ended September 30, 2022 and 2021, respectively, and $67,000 and $165,000 during the nine months ended September 30, 2022 and 2021, respectively, of provision for current expected credit losses related to our long-term receivables for our customer leases.
Schedule of inventory	The following table presents the detail of inventory as recorded in other current assets in the unaudited condensed consolidated balance sheets: As of As of (in thousands) Modules and inverters $ 41,728 $ 60,661 Energy storage systems and components 98,944 43,071 Homebuilder construction in progress 45,055 23,642 Meters and modems 362 581 Other 483 — Total $ 186,572 $ 127,955
Schedule of Financial Instruments Measured at Fair Value on a Recurring Basis	The following tables present our financial instruments measured at fair value on a recurring basis as of September 30, 2022 and December 31, 2021: As of September 30, 2022 Total Level 1 Level 2 Level 3 (in thousands) Financial assets: Investments in solar receivables $ 71,656 $ — $ — $ 71,656 Derivative assets 117,544 — 117,544 — Total $ 189,200 $ — $ 117,544 $ 71,656 Financial liabilities: Contingent consideration $ 45,161 $ — $ — $ 45,161 Total $ 45,161 $ — $ — $ 45,161 As of December 31, 2021 Total Level 1 Level 2 Level 3 (in thousands) Financial assets: Investments in solar receivables $ 82,658 $ — $ — $ 82,658 Derivative assets 14,351 — 14,351 — Total $ 97,009 $ — $ 14,351 $ 82,658 Financial liabilities: Contingent consideration $ 67,895 $ — $ — $ 67,895 Derivative liabilities 5,330 — 5,330 — Total $ 73,225 $ — $ 5,330 $ 67,895
Schedule of Changes in Fair Value of Financial Assets on a Recurring Basis	The following table summarizes the change in fair value of our financial assets accounted for at fair value on a recurring basis using Level 3 inputs as recorded in other current assets and other assets in the unaudited condensed consolidated balance sheets: Nine Months Ended 2022 2021 (in thousands) Balance at beginning of period $ 82,658 $ — Settlements (8,090) — Loss recognized in earnings (2,912) — Balance at end of period $ 71,656 $ —
Schedule of changes in fair value of liabilities accounted for an a recurring basis	The following table summarizes the change in fair value of our financial liabilities accounted for at fair value on a recurring basis using Level 3 inputs as recorded in other long-term liabilities in the unaudited condensed consolidated balance sheets: Nine Months Ended 2022 2021 (in thousands) Balance at beginning of period $ 67,895 $ — Additions — 90,400 Settlements (16,014) — Gain recognized in earnings (6,720) (4,726) Balance at end of period $ 45,161 $ 85,674 The following table summarizes the significant unobservable inputs used in the valuation of our liabilities using Level 3 inputs: Unobservable Weighted Liabilities: Contingent consideration - installation earnout Volatility 35.00% Revenue risk premium 15.80% Risk-free discount rate 4.24% Contingent consideration - microgrid earnout Probability of success 25.00% Risk-free discount rate 4.24%
Disaggregation of revenue	The following table presents the detail of revenue as recorded in the unaudited condensed consolidated statements of operations: Three Months Ended Nine Months Ended 2022 2021 2022 2021 (in thousands) PPA revenue $ 31,891 $ 25,359 $ 84,235 $ 68,443 Lease revenue 25,912 17,845 71,717 51,765 Inventory sales revenue 45,528 — 99,773 — Solar renewable energy certificate revenue 16,241 12,858 37,172 30,648 Cash sales revenue 18,933 8,680 45,695 15,618 Loan revenue 5,012 2,126 12,582 5,000 Other revenue 5,847 2,033 10,924 5,259 Total $ 149,364 $ 68,901 $ 362,098 $ 176,733
Deferred revenue schedule	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 As of (in thousands) Loans $ 490,510 $ 275,681 PPAs and leases 22,345 17,274 Solar receivables 4,668 4,864 Total (1) $ 517,523 $ 297,819 (1) Of this amount, $24.5 million and $15.3 million is recorded in other current liabilities as of September 30, 2022 and December 31, 2021, respectively.

Property and Equipment (Tables)

Property and Equipment (Tables)	9 Months Ended
	Sep. 30, 2022
Property, Plant and Equipment [Abstract]
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 As of (in years) (in thousands) Solar energy systems 35 $ 3,442,340 $ 2,917,721 Construction in progress 356,213 188,518 Asset retirement obligations 30 53,168 45,264 Information technology systems 3 52,203 49,673 Computers and equipment 3-5 4,440 3,085 Leasehold improvements 3-6 4,437 3,160 Furniture and fixtures 7 1,132 1,132 Vehicles 4-5 1,638 1,638 Other 5-6 157 157 Property and equipment, gross 3,915,728 3,210,348 Less: accumulated depreciation (378,551) (300,735) Property and equipment, net $ 3,537,177 $ 2,909,613

Natural Disaster Losses (Tables

Natural Disaster Losses (Tables)	9 Months Ended
	Sep. 30, 2022
Unusual or Infrequent Items, or Both [Abstract]
Schedule of disaster losses	The following table presents the impact of the natural disaster losses as recorded in the unaudited condensed consolidated statements of operations: Nine Months Ended 2022 2021 (in thousands) Operations and maintenance expense: Other natural disaster-related charges $ 980 $ — General and administrative expense: Other natural disaster-related charges 181 — Total $ 1,161 $ —

Detail of Certain Balance She_2

Detail of Certain Balance Sheet Captions (Tables)	9 Months Ended
	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of other current assets	The following table presents the detail of other current assets as recorded in the unaudited condensed consolidated balance sheets: As of As of (in thousands) Inventory $ 186,572 $ 127,955 Restricted cash 14,584 80,213 Current portion of customer notes receivable 94,061 56,074 Other prepaid assets 20,858 14,920 Current portion of investments in solar receivables 7,156 6,787 Prepaid inventory 1,065 4,835 Deferred receivables 11,070 4,818 Other 681 719 Total $ 336,047 $ 296,321
Schedule of other assets	The following table presents the detail of other assets as recorded in the unaudited condensed consolidated balance sheets: As of As of (in thousands) Construction in progress - customer notes receivable $ 391,435 $ 238,791 Exclusivity and other bonus arrangements with dealers, net 106,089 81,756 Investments in solar receivables 64,500 75,871 Restricted cash 112,676 68,583 Straight-line revenue adjustment, net 50,699 43,367 Other 195,235 62,768 Total $ 920,634 $ 571,136
Schedule of other current liabilities	The following table presents the detail of other current liabilities as recorded in the unaudited condensed consolidated balance sheets: As of As of (in thousands) Interest payable $ 20,752 $ 22,740 Deferred revenue 24,523 15,273 Current portion of performance guarantee obligations 2,519 3,175 Current portion of operating and finance lease liability 3,002 1,850 Other 297 1,312 Total $ 51,093 $ 44,350

Asset Retirement Obligations _2

Asset Retirement Obligations ("ARO") (Tables)	9 Months Ended
	Sep. 30, 2022
Asset Retirement Obligation Disclosure [Abstract]
Schedule of changes in AROs	The following table presents the changes in AROs as recorded in other long-term liabilities in the unaudited condensed consolidated balance sheets: As of September 30, 2022 2021 (in thousands) Balance at beginning of period $ 54,396 $ 41,788 Additional obligations incurred 7,962 7,010 Accretion expense 2,687 2,094 Other (79) (69) Balance at end of period $ 64,966 $ 50,823

Customer Notes Receivable (Tabl

Customer Notes Receivable (Tables)	9 Months Ended
	Sep. 30, 2022
Receivables [Abstract]
Fair values of notes receivable and corresponding carrying amounts	The following table presents the detail of customer notes receivable as recorded in the unaudited condensed consolidated balance sheets and the corresponding fair values: As of As of (in thousands) Customer notes receivable $ 2,234,312 $ 1,301,285 Allowance for credit losses (67,988) (41,138) Customer notes receivable, net (1) $ 2,166,324 $ 1,260,147 Estimated fair value, net $ 2,172,904 $ 1,274,099 (1) Of this amount, $94.1 million and $56.1 million is recorded in other current assets as of September 30, 2022 and December 31, 2021, respectively.
Changes in the allowance for credit losses	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 Nine Months Ended 2022 2021 2022 2021 (in thousands) Balance at beginning of period $ 1,198 $ 858 $ 1,044 $ 912 Provision for current expected credit losses 802 485 1,891 1,322 Write off of uncollectible accounts (717) (424) (1,769) (1,410) Recoveries 83 54 200 148 Other, net — — — 1 Balance at end of period $ 1,366 $ 973 $ 1,366 $ 973 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 Nine Months Ended 2022 2021 2022 2021 (in thousands) Balance at beginning of period $ 57,043 $ 26,018 $ 41,138 $ 17,668 Provision for current expected credit losses (1) 10,945 6,518 26,814 14,867 Recoveries — — 36 — Other, net — (1) — — Balance at end of period $ 67,988 $ 32,535 $ 67,988 $ 32,535 (1) In addition, we recognized $22,000 and $49,000 during the three months ended September 30, 2022 and 2021, respectively, and $67,000 and $165,000 during the nine months ended September 30, 2022 and 2021, respectively, of provision for current expected credit losses related to our long-term receivables for our customer leases.
Financing receivable, past due	The following table presents the aging of the amortized cost of customer notes receivable: As of As of (in thousands) 1-90 days past due $ 49,973 $ 23,118 91-180 days past due 10,954 5,068 Greater than 180 days past due 11,163 10,277 Total past due 72,090 38,463 Not past due 2,162,222 1,262,822 Total $ 2,234,312 $ 1,301,285
Financing receivable amortized cost of customer notes receivable	The following table presents the amortized cost by origination year of our customer notes receivable based on payment activity. Amortized Cost by Origination Year 2022 2021 2020 2019 2018 Prior Total (in thousands) Payment performance: Performing $ 992,684 $ 750,087 $ 229,865 $ 118,039 $ 77,315 $ 55,159 $ 2,223,149 Nonperforming (1) 491 5,970 1,454 1,626 1,161 461 11,163 Total $ 993,175 $ 756,057 $ 231,319 $ 119,665 $ 78,476 $ 55,620 $ 2,234,312 (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 181 days or more.

Long-Term Debt (Tables)

Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2022
Debt Disclosure [Abstract]
Schedule of long-term debt instruments	The following table presents the detail of long-term debt, net as recorded in the unaudited condensed consolidated balance sheets: Nine Months Ended As of September 30, 2022 Year Ended As of December 31, 2021 Long-term Current Long-term Current (in thousands, except interest rates) SEI 0.25% convertible senior notes 0.71 % $ 575,000 $ — 0.70 % $ 575,000 $ — 2.625% convertible senior notes 3.38 % 600,000 — — — Debt discount, net (25,596) — (12,810) — Deferred financing costs, net (916) — (547) — Sunnova Energy Corporation 5.875% senior notes 6.54 % 400,000 — 6.42 % 400,000 — Debt discount, net (3,885) — (4,629) — Deferred financing costs, net (7,846) — (9,341) — EZOP Revolving credit facility 4.40 % 409,000 — 4.12 % 190,000 — Debt discount, net (602) — (898) — HELII Solar asset-backed notes 5.72 % 204,016 8,632 5.71 % 217,465 8,952 Debt discount, net (31) — (36) — Deferred financing costs, net (3,763) — (4,346) — RAYSI Solar asset-backed notes 5.56 % 107,538 9,120 5.55 % 115,792 4,573 Debt discount, net (1,006) — (1,166) — Deferred financing costs, net (3,558) — (3,893) — HELIII Solar loan-backed notes 4.43 % 96,700 10,555 4.79 % 105,331 10,916 Debt discount, net (1,610) — (1,838) — Deferred financing costs, net (1,546) — (1,765) — TEPH Revolving credit facility 7.23 % 317,200 — 6.86 % 118,950 — Debt discount, net (2,310) — (3,678) — SOLI Solar asset-backed notes 3.93 % 353,484 15,998 3.91 % 366,304 15,563 Debt discount, net (90) — (100) — Deferred financing costs, net (7,093) — (7,881) — HELIV Solar loan-backed notes 4.17 % 107,550 11,659 4.16 % 116,579 11,937 Debt discount, net (602) — (724) — Deferred financing costs, net (2,772) — (3,283) — AP8 Revolving credit facility — % — — 7.17 % — — SOLII Solar asset-backed notes 3.42 % 234,214 6,379 3.42 % 241,293 6,176 Debt discount, net (66) — (72) — Deferred financing costs, net (4,730) — (5,192) — HELV Solar loan-backed notes 2.47 % 145,470 15,590 2.44 % 150,743 21,354 Debt discount, net (728) — (840) — Deferred financing costs, net (2,803) — (3,230) — SOLIII Solar asset-backed notes 2.79 % 281,098 16,561 2.73 % 294,069 16,590 Debt discount, net (121) — (132) — Deferred financing costs, net (5,799) — (6,319) — HELVI Solar loan-backed notes 2.09 % 168,510 19,289 2.02 % 181,625 21,152 Debt discount, net (42) — (48) — Deferred financing costs, net (3,051) — (3,477) — HELVII Solar loan-backed notes 2.50 % 129,349 16,026 2.44 % 141,407 12,580 Debt discount, net (40) — (45) — Deferred financing costs, net (2,294) — (2,587) — HELVIII Solar loan-backed notes 3.54 % 253,739 30,221 — — Debt discount, net (5,487) — — — Deferred financing costs, net (4,250) — — — SOLIV Solar asset-backed notes 5.70 % 341,900 7,932 — — Debt discount, net (11,620) — — — Deferred financing costs, net (8,305) — — — HELIX Solar loan-backed notes 5.41 % 202,043 23,169 — — Debt discount, net (3,725) — — — Deferred financing costs, net (3,417) — — — Total $ 4,807,107 $ 191,131 $ 3,135,681 $ 129,793
Schedule of carrying values and estimated fair values of debt instruments	Fair Values of Long-Term Debt . The fair values of our long-term debt and the corresponding carrying amounts are as follows: As of September 30, 2022 As of December 31, 2021 Carrying Estimated Carrying Estimated (in thousands) SEI 0.25% convertible senior notes $ 575,000 $ 522,821 $ 575,000 $ 568,732 SEI 2.625% convertible senior notes 600,000 593,971 — — Sunnova Energy Corporation 5.875% senior notes 400,000 365,699 400,000 391,917 EZOP revolving credit facility 409,000 409,000 190,000 190,000 HELII solar asset-backed notes 212,648 208,627 226,417 253,079 RAYSI solar asset-backed notes 116,658 106,933 120,365 129,575 HELIII solar loan-backed notes 107,255 97,083 116,247 120,465 TEPH revolving credit facility 317,200 317,200 118,950 118,950 SOLI solar asset-backed notes 369,482 320,655 381,867 382,511 HELIV solar loan-backed notes 119,209 105,559 128,516 123,189 SOLII solar asset-backed notes 240,593 193,442 247,469 231,894 HELV solar loan-backed notes 161,060 141,723 172,097 165,848 SOLIII solar asset-backed notes 297,659 245,034 310,659 302,994 HELVI solar loan-backed notes 187,799 161,195 202,777 199,159 HELVII solar loan-backed notes 145,375 127,664 153,987 153,518 HELVIII solar loan-backed notes 283,960 257,707 — — SOLIV solar asset-backed notes 349,832 342,301 — — HELIX solar loan-backed notes 225,212 214,374 — — Total (1) $ 5,117,942 $ 4,730,988 $ 3,344,351 $ 3,331,831 (1) Amounts exclude the net deferred financing costs (classified as debt) and net debt discounts of $119.7 million and $78.9 million as of September 30, 2022 and December 31, 2021, respectively.

Derivative Instruments (Tables)

Derivative Instruments (Tables)	9 Months Ended
	Sep. 30, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Outstanding derivative instruments	The following table presents a summary of the outstanding derivative instruments: As of September 30, 2022 As of December 31, 2021 Effective Termination Fixed Aggregate Effective Termination Fixed Aggregate (in thousands, except interest rates) EZOP June 2022 - July 2034 0.890% $ 499,215 March 2021 - July 2033 - 1.000% $ 261,836 TEPH July 2022 January 2035 - 1.750% - 2.650% 333,749 February 2019 - January 2023 - 0.121% - 2.534% 270,170 Total $ 832,964 $ 532,006
Fair value of interest rate swaps	The following table presents the fair value of the interest rate swaps and caps as recorded in the unaudited condensed consolidated balance sheets: As of As of (in thousands) Other assets $ 117,544 $ 14,351 Other long-term liabilities — (5,330) Total, net $ 117,544 $ 9,021 Three Months Ended Nine Months Ended 2022 2021 2022 2021 (in thousands) Realized (gain) loss $ (1,928) $ 586 $ (47,434) $ 1,693 Unrealized gain (29,059) (2,642) (35,685) (5,574) Total $ (30,987) $ (2,056) $ (83,119) $ (3,881)

Equity-Based Compensation (Tabl

Equity-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2022
Share-Based Payment Arrangement [Abstract]
Stock option activity	The following table summarizes stock option activity: Number Weighted Weighted Weighted Aggregate (in thousands) Outstanding, December 31, 2021 2,765,815 $ 16.71 4.91 $ 31,874 Granted 538,758 $ 27.62 9.48 $ 14.37 Exercised (2,884) $ 10.14 $ 46 Forfeited (1,966) $ 40.14 $ 18.15 Outstanding, September 30, 2022 3,299,723 $ 18.48 5.02 $ 18,379 Exercisable, September 30, 2022 2,710,515 $ 16.26 4.07 $ 18,379 Vested and expected to vest, September 30, 2022 3,299,723 $ 18.48 5.02 $ 18,379 Non-vested, September 30, 2022 589,208 $ 14.71
Restricted stock unit activity	The following table summarizes restricted stock unit activity: Number of Weighted Outstanding, December 31, 2021 1,649,789 $ 18.48 Granted 1,015,949 $ 23.85 Vested (948,404) $ 19.47 Forfeited (62,939) $ 25.86 Outstanding, September 30, 2022 1,654,395 $ 20.93

Basic and Diluted Net Loss Pe_2

Basic and Diluted Net Loss Per Share (Tables)	9 Months Ended
	Sep. 30, 2022
Earnings Per Share [Abstract]
Schedule of 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 Nine Months Ended 2022 2021 2022 2021 (in thousands, except share and per share amounts) Net loss attributable to common stockholders—basic and diluted $ (62,047) $ (27,541) $ (132,633) $ (123,920) Net loss per share attributable to common stockholders—basic and diluted $ (0.54) $ (0.25) $ (1.16) $ (1.12) Weighted average common shares outstanding—basic and diluted 114,816,879 112,159,698 114,293,251 110,185,333
Schedule of antidilutive weighted average shares	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 Nine Months Ended 2022 2021 2022 2021 Equity-based compensation awards 5,033,658 4,574,364 4,906,182 4,727,081 Convertible senior notes 25,294,010 16,628,073 19,548,462 8,875,206

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Schedule of performance guarantee obligations	The changes in our aggregate performance guarantee obligations are as follows: As of September 30, 2022 2021 (in thousands) Balance at beginning of period $ 5,293 $ 5,718 Accruals 1,811 2,323 Settlements (3,170) (3,275) Balance at end of period $ 3,934 $ 4,766
Lease expense	The following table presents the detail of lease expense as recorded in general and administrative expense in the unaudited condensed consolidated statements of operations: Three Months Ended Nine Months Ended 2022 2021 2022 2021 (in thousands) Operating lease expense $ 676 $ 401 $ 2,061 $ 1,164 Finance lease expense: Amortization expense 201 157 562 251 Interest on lease liabilities 15 14 42 24 Short-term lease expense 37 29 97 51 Variable lease expense 190 274 712 831 Total $ 1,119 $ 875 $ 3,474 $ 2,321 Other information related to leases was as follows: Nine Months Ended 2022 2021 (in thousands) Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases (1) $ 1,242 $ 883 Operating cash flows from finance leases $ 42 $ 24 Financing cash flows from finance leases $ 601 $ 283 Right-of-use assets obtained in exchange for lease obligations: Operating leases $ 226 $ 452 Finance leases $ 758 $ 2,089 (1) Includes reimbursements in 2022 and 2021 of approximately $45,000 and $423,000, respectively, for leasehold improvements. As of As of Weighted average remaining lease term (years): Operating leases 6.85 7.54 Finance leases 2.93 3.35 Weighted average discount rate: Operating leases 3.95 % 3.92 % Finance leases 3.83 % 3.11 %
Lease assets and liabilities	The following table presents the detail of right-of-use assets and lease liabilities as recorded in other assets other current liabilities other long-term liabilities As of As of (in thousands) Right-of-use assets: Operating leases $ 15,193 $ 16,483 Finance leases 2,384 2,187 Total right-of-use assets $ 17,577 $ 18,670 Current lease liabilities: Operating leases $ 2,267 $ 1,190 Finance leases 735 660 Long-term leases liabilities: Operating leases 16,136 17,684 Finance leases 963 1,024 Total lease liabilities $ 20,101 $ 20,558
Operating lease, future minimum lease payments	Future minimum lease payments under our non-cancelable leases as of September 30, 2022 were as follows: Operating Finance (in thousands) Remaining 2022 $ 653 $ 205 2023 3,133 750 2024 3,118 542 2025 3,168 248 2026 3,236 44 2027 and thereafter 8,789 — Total 22,097 1,789 Amount representing interest (2,821) (91) Amount representing leasehold incentives (873) — Present value of future payments 18,403 1,698 Current portion of lease liability (2,267) (735) Long-term portion of lease liability $ 16,136 $ 963
Other commitments	Dealer Commitments. As of September 30, 2022 and December 31, 2021, the net unamortized balance of payments to dealers for exclusivity and other similar arrangements was $106.1 million and $81.8 million, respectively. Under these agreements, we paid $6.7 million and $5.8 million during the three months ended September 30, 2022 and 2021, respectively, and we paid $33.6 million and $25.7 million during the nine months ended September 30, 2022 and 2021, 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 (in thousands) Remaining 2022 $ 3,528 2023 35,977 2024 37,755 2025 27,971 2026 6,904 2027 and thereafter — Total $ 112,135
Future commitments	Future commitments as of September 30, 2022 were as follows: Information (in thousands) Remaining 2022 $ 16,011 2023 22,918 2024 5,612 2025 18 2026 — 2027 and thereafter — Total $ 44,559

Description of Business and B_2

Description of Business and Basis of Presentation - (Details) customer in Thousands, $ in Billions	9 Months Ended	38 Months Ended
	Sep. 30, 2022 renewalOption customer state	Sep. 30, 2022 USD ($) state
Subsidiary, Sale of Stock [Line Items]
Number of customers | customer	246
Number of states in which entity operates (more than) | state	35	35
Maximum renewal term	10 years
Equity cure contribution | $		$ 11.2
Solar Service Agreement | Minimum
Subsidiary, Sale of Stock [Line Items]
Agreement term	10 years
Solar Service Agreement | Maximum
Subsidiary, Sale of Stock [Line Items]
Agreement term	25 years
Lease and Power Purchase Agreement (PPA) | Lease Agreement, Option One
Subsidiary, Sale of Stock [Line Items]
Number of options to renew term	2
Renewal term	5 years
Lease and Power Purchase Agreement (PPA) | Lease Agreement, Option Two
Subsidiary, Sale of Stock [Line Items]
Number of options to renew term	1
Renewal term	10 years

Significant Accounting Polici_4

Significant Accounting Policies - Narrative (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2022 USD ($) kWh FICO_score renewalOption	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Disaggregation of Revenue [Line Items]
Average age of solar systems	4 years
Inventory	$ 186,572		$ 127,955
Threshold period past due, writeoff	180 days
Deferred revenue	$ 517,523		297,819	$ 106,800
Revenue recognized	5,600	$ 6,600
Solar Renewable Energy Certificates
Disaggregation of Revenue [Line Items]
Inventory	$ 0		0
PPA revenue | Lease Agreement, Option One
Disaggregation of Revenue [Line Items]
Renewal term	5 years
Number of options to renew term | renewalOption	2
PPA revenue | Lease Agreement, Option Two
Disaggregation of Revenue [Line Items]
Renewal term	10 years
Number of options to renew term | renewalOption	1
PPA revenue | Minimum
Disaggregation of Revenue [Line Items]
Agreement term	20 years
PPA revenue | Maximum
Disaggregation of Revenue [Line Items]
Agreement term	25 years
Renewal term	10 years
Lease revenue | Lease Agreement, Option One
Disaggregation of Revenue [Line Items]
Renewal term	5 years
Number of options to renew term | renewalOption	2
Lease revenue | Lease Agreement, Option Two
Disaggregation of Revenue [Line Items]
Renewal term	10 years
Number of options to renew term | renewalOption	1
Lease revenue | Minimum
Disaggregation of Revenue [Line Items]
Agreement term	20 years
Lease revenue | Maximum
Disaggregation of Revenue [Line Items]
Agreement term	25 years
Renewal term	10 years
Solar renewable energy certificate revenue
Disaggregation of Revenue [Line Items]
Energy per certificate (in kWhs) | kWh	1,000
Typical period for receiving payment	1 month
Other revenue | Maximum
Disaggregation of Revenue [Line Items]
Agreement term	10 years
Loan revenue
Disaggregation of Revenue [Line Items]
Deferred revenue	$ 490,510		$ 275,681
Loan revenue | Minimum
Disaggregation of Revenue [Line Items]
Agreement term	10 years
Minimum FICO score required for customer to qualify for program | FICO_score	600
Loan revenue | Median
Disaggregation of Revenue [Line Items]
Agreement term	15 years
Loan revenue | Maximum
Disaggregation of Revenue [Line Items]
Agreement term	25 years
Minimum FICO score required for customer to qualify for program | FICO_score	720

Significant Accounting Polici_5

Significant Accounting Policies - Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Accounting Policies [Abstract]
Balance at beginning of period	$ 1,198	$ 858	$ 1,044	$ 912
Provision for current expected credit losses	802	485	1,891	1,322
Write off of uncollectible accounts	(717)	(424)	(1,769)	(1,410)
Recoveries	83	54	200	148
Other, net	0	0	0	1
Balance at end of period	$ 1,366	$ 973	$ 1,366	$ 973

Significant Accounting Polici_6

Significant Accounting Policies - Inventory (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Inventory [Line Items]
Inventory	$ 186,572	$ 127,955
Modules and inverters
Inventory [Line Items]
Inventory	41,728	60,661
Energy storage systems and components
Inventory [Line Items]
Inventory	98,944	43,071
Homebuilder construction in progress
Inventory [Line Items]
Inventory	45,055	23,642
Meters and modems
Inventory [Line Items]
Inventory	362	581
Other
Inventory [Line Items]
Inventory	$ 483	$ 0

Significant Accounting Polici_7

Significant Accounting Policies - Schedule of Fair Value of Recurring Financial Instruments (Details) - Fair Value, Recurring - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financial assets:
Investments in solar receivables	$ 71,656	$ 82,658
Derivative assets	117,544	14,351
Total assets	189,200	97,009
Financial liabilities:
Contingent consideration	45,161	67,895
Derivative liabilities		5,330
Total liabilities	45,161	73,225
Fair Value, Inputs, Level 1
Financial assets:
Investments in solar receivables	0	0
Derivative assets	0	0
Total assets	0	0
Financial liabilities:
Contingent consideration	0	0
Derivative liabilities		0
Total liabilities	0	0
Fair Value, Inputs, Level 2
Financial assets:
Investments in solar receivables	0	0
Derivative assets	117,544	14,351
Total assets	117,544	14,351
Financial liabilities:
Contingent consideration	0	0
Derivative liabilities		5,330
Total liabilities	0	5,330
Fair Value, Inputs, Level 3
Financial assets:
Investments in solar receivables	71,656	82,658
Derivative assets	0	0
Total assets	71,656	82,658
Financial liabilities:
Contingent consideration	45,161	67,895
Derivative liabilities		0
Total liabilities	$ 45,161	$ 67,895

Significant Accounting Polici_8

Significant Accounting Policies - Schedule of Investment in Solar Receivables Fair Value (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at beginning of period	$ 82,658	$ 0
Settlements	(8,090)	0
Loss recognized in earnings	(2,912)	0
Balance at end of period	$ 71,656	$ 0

Significant Accounting Polici_9

Significant Accounting Policies - Schedule of changes in fair value of liabilities accounted for an a recurring basis (Details) - Contingent Consideration Liability - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance at beginning of period	$ 67,895	$ 0
Additions	0	90,400
Settlements	(16,014)	0
Gain recognized in earnings	(6,720)	(4,726)
Balance at end of period	$ 45,161	$ 85,674

Significant Accounting Polic_10

Significant Accounting Policies - Schedule of Fair Value Unobservable Inputs (Details) - Fair Value, Inputs, Level 3 - Weighted Average	Sep. 30, 2022
Volatility
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent consideration - installation earnout	35%
Revenue risk premium
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent consideration - installation earnout	15.80%
Risk-free discount rate
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent consideration - installation earnout	4.24%
Contingent consideration - microgrid earnout	4.24%
Probability of success
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent consideration - microgrid earnout	25%

Significant Accounting Polic_11

Significant Accounting Policies - Schedule of Detailed Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 149,364	$ 68,901	$ 362,098	$ 176,733
PPA revenue
Disaggregation of Revenue [Line Items]
Revenue	31,891	25,359	84,235	68,443
Lease revenue
Disaggregation of Revenue [Line Items]
Revenue	25,912	17,845	71,717	51,765
Inventory Sales Revenue
Disaggregation of Revenue [Line Items]
Revenue	45,528	0	99,773	0
Solar renewable energy certificate revenue
Disaggregation of Revenue [Line Items]
Revenue	16,241	12,858	37,172	30,648
Cash sales revenue
Disaggregation of Revenue [Line Items]
Revenue	18,933	8,680	45,695	15,618
Loan revenue
Disaggregation of Revenue [Line Items]
Revenue	5,012	2,126	12,582	5,000
Other revenue
Disaggregation of Revenue [Line Items]
Revenue	$ 5,847	$ 2,033	$ 10,924	$ 5,259

Significant Accounting Polic_12

Significant Accounting Policies - Performance Obligations (Details) $ in Billions	9 Months Ended
	Sep. 30, 2022 USD ($)
Accounting Policies [Abstract]
Contracted but not yet recognized revenue	$ 2.7
Performance obligation, description of timing	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
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Contracted but not yet recognized revenue	4%
Contracted but not yet recognized revenue, expected timing of satisfaction	12 months

Significant Accounting Polic_13

Significant Accounting Policies - Deferred Revenue (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Deferred revenue	$ 517,523	$ 297,819	$ 106,800
Deferred revenue included in other current liabilities	24,523	15,273
Loans
Disaggregation of Revenue [Line Items]
Deferred revenue	490,510	275,681
PPAs and leases
Disaggregation of Revenue [Line Items]
Deferred revenue	22,345	17,274
Solar receivables
Disaggregation of Revenue [Line Items]
Deferred revenue	$ 4,668	$ 4,864

Property and Equipment (Details

Property and Equipment (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 3,915,728	$ 3,210,348
Less: accumulated depreciation	(378,551)	(300,735)
Property and equipment, net	$ 3,537,177	2,909,613
Solar energy systems
Property, Plant and Equipment [Line Items]
Useful Lives	35 years
Property and equipment, gross	$ 3,442,340	2,917,721
Less: accumulated depreciation	(333,900)	(264,600)
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 356,213	188,518
Asset retirement obligations
Property, Plant and Equipment [Line Items]
Useful Lives	30 years
Property and equipment, gross	$ 53,168	45,264
Information technology systems
Property, Plant and Equipment [Line Items]
Useful Lives	3 years
Property and equipment, gross	$ 52,203	49,673
Computers and equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 4,440	3,085
Computers and equipment | Minimum
Property, Plant and Equipment [Line Items]
Useful Lives	3 years
Computers and equipment | Maximum
Property, Plant and Equipment [Line Items]
Useful Lives	5 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 4,437	3,160
Leasehold improvements | Minimum
Property, Plant and Equipment [Line Items]
Useful Lives	3 years
Leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Useful Lives	6 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Useful Lives	7 years
Property and equipment, gross	$ 1,132	1,132
Vehicles
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,638	1,638
Vehicles | Minimum
Property, Plant and Equipment [Line Items]
Useful Lives	4 years
Vehicles | Maximum
Property, Plant and Equipment [Line Items]
Useful Lives	5 years
Other
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 157	$ 157
Other | Minimum
Property, Plant and Equipment [Line Items]
Useful Lives	5 years
Other | Maximum
Property, Plant and Equipment [Line Items]
Useful Lives	6 years

Natural Disaster Losses - Narra

Natural Disaster Losses - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Business Interruption Loss [Line Items]
Operations and maintenance	$ 9,774	$ 6,035	$ 23,787	$ 14,640
General and administrative	$ 75,897	$ 53,372	214,362	144,028
Other natural disaster-related charges
Business Interruption Loss [Line Items]
Operations and maintenance			980	0
General and administrative			$ 181	$ 0

Natural Disaster Losses - Sched

Natural Disaster Losses - Schedule of Disaster Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Business Interruption Loss [Line Items]
Operations and maintenance	$ 9,774	$ 6,035	$ 23,787	$ 14,640
General and administrative	75,897	53,372	214,362	144,028
Total operating expense, net	$ 177,085	$ 77,077	426,756	222,558
Natural Disaster Losses
Business Interruption Loss [Line Items]
Total operating expense, net			1,161	0
Other natural disaster-related charges
Business Interruption Loss [Line Items]
Operations and maintenance			980	0
General and administrative			$ 181	$ 0

Detail of Certain Balance She_3

Detail of Certain Balance Sheet Captions - Other Current Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Inventory	$ 186,572	$ 127,955
Restricted cash	14,584	80,213	$ 52,042
Current portion of customer notes receivable	94,061	56,074
Other prepaid assets	20,858	14,920
Current portion of investments in solar receivables	7,156	6,787
Prepaid inventory	1,065	4,835
Deferred receivables	11,070	4,818
Other	681	719
Total	$ 336,047	$ 296,321

Detail of Certain Balance She_4

Detail of Certain Balance Sheet Captions - Other Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Construction in progress - customer notes receivable	$ 391,435	$ 238,791
Exclusivity and other bonus arrangements with dealers, net	106,089	81,756
Investments in solar receivables	64,500	75,871
Restricted cash	112,676	68,583	$ 60,071
Straight-line revenue adjustment, net	50,699	43,367
Other	195,235	62,768
Total	$ 920,634	$ 571,136

Detail of Certain Balance She_5

Detail of Certain Balance Sheet Captions - Other Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Interest payable	$ 20,752	$ 22,740
Deferred revenue	24,523	15,273
Current portion of performance guarantee obligations	2,519	3,175
Current portion of operating and finance lease liability	3,002	1,850
Other	297	1,312
Total	$ 51,093	$ 44,350

Asset Retirement Obligations _3

Asset Retirement Obligations ("ARO") (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Asset Retirement Obligation Disclosure [Abstract]
Asset retirement obligation, useful life	30 years
Asset Retirement Obligation, Roll Forward Analysis [Roll Forward]
Balance at beginning of period	$ 54,396	$ 41,788
Additional obligations incurred	7,962	7,010
Accretion expense	2,687	2,094
Other	(79)	(69)
Balance at end of period	$ 64,966	$ 50,823

Customer Notes Receivable - Nar

Customer Notes Receivable - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan systems not yet placed in service	$ 391,400,000		$ 391,400,000		$ 238,800,000
Interest income	16,185,000	$ 9,098,000	40,428,000	$ 24,266,000
Customer notes receivable not accruing interest	9,000,000		9,000,000		0
Customer notes receivable not accruing interest, allowance	196,000		196,000		0
Interest income for nonaccrual loans	0	0	0	0
Amortized cost	22,100,000		22,100,000		15,300,000
Customer notes receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Interest income	15,100,000	8,900,000	39,100,000	23,900,000
Accrued investment income receivable	5,500,000		5,500,000		$ 3,500,000
Accrued investment income receivable, written off	$ 8,000	$ 0	$ 505,000	$ 0
Loan revenue | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Agreement term			10 years
Loan revenue | Median
Accounts, Notes, Loans and Financing Receivable [Line Items]
Agreement term			15 years
Loan revenue | Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Agreement term			25 years

Customer Notes Receivable - Sch

Customer Notes Receivable - Schedule of Customer Notes Receivables (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Customer notes receivable	$ 2,234,312		$ 1,301,285
Allowance for credit losses	(67,988)	$ (57,043)	(41,138)	$ (32,535)	$ (26,018)	$ (17,668)
Current portion of customer notes receivable	94,061		56,074
Customer Notes Receivable
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current portion of customer notes receivable	94,100		56,100
Carrying Value
Accounts, Notes, Loans and Financing Receivable [Line Items]
Customer notes receivable	2,166,324		1,260,147
Estimated Fair Value
Accounts, Notes, Loans and Financing Receivable [Line Items]
Customer notes receivable	$ 2,172,904		$ 1,274,099

Customer Notes Receivable - S_2

Customer Notes Receivable - Schedule of Changes in Allowances for Credit Losses Related to Customer Notes Receivable (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 57,043	$ 26,018	$ 41,138	$ 17,668
Provision for current expected credit loss	10,945	6,518	26,814	14,867
Recoveries	0	0	36	0
Other, net	0	(1)	0	0
Balance at end of period	67,988	32,535	67,988	32,535
Provision for expected credit losses	$ 22	$ 49	$ 67	$ 165

Customer Notes Receivable - S_3

Customer Notes Receivable - Schedule of Aged Receivables (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Customer notes receivable	$ 2,234,312	$ 1,301,285
Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Customer notes receivable	72,090	38,463
1-90 days past due
Financing Receivable, Past Due [Line Items]
Customer notes receivable	49,973	23,118
91-180 days past due
Financing Receivable, Past Due [Line Items]
Customer notes receivable	10,954	5,068
Greater than 180 days past due
Financing Receivable, Past Due [Line Items]
Customer notes receivable	11,163	10,277
Not past due
Financing Receivable, Past Due [Line Items]
Customer notes receivable	$ 2,162,222	$ 1,262,822

Customer Notes Receivable - S_4

Customer Notes Receivable - Schedule of Amortized cost of Customer Notes Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
2022	$ 993,175
2021	756,057
2020	231,319
2019	119,665
2018	78,476
Prior	55,620
Total	2,234,312	$ 1,301,285
Performing
Financing Receivable, Credit Quality Indicator [Line Items]
2022	992,684
2021	750,087
2020	229,865
2019	118,039
2018	77,315
Prior	55,159
Total	2,223,149
Nonperforming
Financing Receivable, Credit Quality Indicator [Line Items]
2022	491
2021	5,970
2020	1,454
2019	1,626
2018	1,161
Prior	461
Total	$ 11,163

Long-Term Debt - Schedule of Lo

Long-Term Debt - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2022	Dec. 31, 2021	Aug. 31, 2022
Debt Instrument [Line Items]
Long-term debt, non-current	$ 4,807,107	$ 3,135,681
Long-term debt, current	191,131	129,793
SEI | Convertible senior notes
Debt Instrument [Line Items]
Debt discount, net, non-current	(25,596)	(12,810)
Debt discount, net, current	0	0
Deferred financing costs, net, non-current	(916)	(547)
Deferred financing costs, net, current	$ 0	$ 0
SEI | Convertible senior notes | 0.25% convertible senior notes
Debt Instrument [Line Items]
Stated interest rate	0.25%
Weighted average effective interest rate	0.71%	0.70%
Long-term debt, gross, non-current	$ 575,000	$ 575,000
Long-term debt, gross, current	$ 0	$ 0
SEI | Convertible senior notes | 2.625% convertible senior notes
Debt Instrument [Line Items]
Stated interest rate	2.625%		2.625%
Weighted average effective interest rate	3.38%
Long-term debt, gross, non-current	$ 600,000	$ 0
Long-term debt, gross, current	0	0
Sunnova Energy Corporation
Debt Instrument [Line Items]
Debt discount, net, non-current	(3,885)	(4,629)
Debt discount, net, current	0	0
Deferred financing costs, net, non-current	(7,846)	(9,341)
Deferred financing costs, net, current	$ 0	$ 0
Sunnova Energy Corporation | Senior notes | 5.875% senior notes
Debt Instrument [Line Items]
Stated interest rate	5.875%
Weighted average effective interest rate	6.54%	6.42%
Long-term debt, gross, non-current	$ 400,000	$ 400,000
Long-term debt, gross, current	0	0
EZOP | Revolving credit facility
Debt Instrument [Line Items]
Debt discount, net, non-current	(602)	(898)
Debt discount, net, current	$ 0	$ 0
EZOP | Revolving credit facility | Revolving credit facility
Debt Instrument [Line Items]
Weighted average effective interest rate	4.40%	4.12%
Long-term debt, gross, non-current	$ 409,000	$ 190,000
Long-term debt, gross, current	0	0
HELII
Debt Instrument [Line Items]
Debt discount, net, non-current	(31)	(36)
Debt discount, net, current	0	0
Deferred financing costs, net, non-current	(3,763)	(4,346)
Deferred financing costs, net, current	$ 0	$ 0
HELII | Solar asset-backed notes
Debt Instrument [Line Items]
Weighted average effective interest rate	5.72%	5.71%
Long-term debt, gross, non-current	$ 204,016	$ 217,465
Long-term debt, gross, current	8,632	8,952
RAYSI
Debt Instrument [Line Items]
Debt discount, net, non-current	(1,006)	(1,166)
Debt discount, net, current	0	0
Deferred financing costs, net, non-current	(3,558)	(3,893)
Deferred financing costs, net, current	$ 0	$ 0
RAYSI | Solar asset-backed notes
Debt Instrument [Line Items]
Weighted average effective interest rate	5.56%	5.55%
Long-term debt, gross, non-current	$ 107,538	$ 115,792
Long-term debt, gross, current	9,120	4,573
HELIII
Debt Instrument [Line Items]
Debt discount, net, non-current	(1,610)	(1,838)
Debt discount, net, current	0	0
Deferred financing costs, net, non-current	(1,546)	(1,765)
Deferred financing costs, net, current	$ 0	$ 0
HELIII | Solar loan-backed notes
Debt Instrument [Line Items]
Weighted average effective interest rate	4.43%	4.79%
Long-term debt, gross, non-current	$ 96,700	$ 105,331
Long-term debt, gross, current	10,555	10,916
TEPH
Debt Instrument [Line Items]
Debt discount, net, non-current	(2,310)	(3,678)
Debt discount, net, current	$ 0	$ 0
TEPH | Revolving credit facility | Revolving credit facility
Debt Instrument [Line Items]
Weighted average effective interest rate	7.23%	6.86%
Long-term debt, gross, non-current	$ 317,200	$ 118,950
Long-term debt, gross, current	0	0
SOLI
Debt Instrument [Line Items]
Debt discount, net, non-current	(90)	(100)
Debt discount, net, current	0	0
Deferred financing costs, net, non-current	(7,093)	(7,881)
Deferred financing costs, net, current	$ 0	$ 0
SOLI | Solar asset-backed notes
Debt Instrument [Line Items]
Weighted average effective interest rate	3.93%	3.91%
Long-term debt, gross, non-current	$ 353,484	$ 366,304
Long-term debt, gross, current	15,998	15,563
HELIV
Debt Instrument [Line Items]
Debt discount, net, non-current	(602)	(724)
Debt discount, net, current	0	0
Deferred financing costs, net, non-current	(2,772)	(3,283)
Deferred financing costs, net, current	$ 0	$ 0
HELIV | Solar loan-backed notes
Debt Instrument [Line Items]
Weighted average effective interest rate	4.17%	4.16%
Long-term debt, gross, non-current	$ 107,550	$ 116,579
Long-term debt, gross, current	$ 11,659	$ 11,937
AP8 | Revolving credit facility | Revolving credit facility
Debt Instrument [Line Items]
Weighted average effective interest rate	0%	7.17%
Long-term debt, gross, non-current	$ 0	$ 0
Long-term debt, gross, current	0	0
SOLII
Debt Instrument [Line Items]
Debt discount, net, non-current	(66)	(72)
Debt discount, net, current	0	0
Deferred financing costs, net, non-current	(4,730)	(5,192)
Deferred financing costs, net, current	$ 0	$ 0
SOLII | Solar asset-backed notes
Debt Instrument [Line Items]
Weighted average effective interest rate	3.42%	3.42%
Long-term debt, gross, non-current	$ 234,214	$ 241,293
Long-term debt, gross, current	6,379	6,176
HELV
Debt Instrument [Line Items]
Debt discount, net, non-current	(728)	(840)
Debt discount, net, current	0	0
Deferred financing costs, net, non-current	(2,803)	(3,230)
Deferred financing costs, net, current	$ 0	$ 0
HELV | Solar loan-backed notes
Debt Instrument [Line Items]
Weighted average effective interest rate	2.47%	2.44%
Long-term debt, gross, non-current	$ 145,470	$ 150,743
Long-term debt, gross, current	15,590	21,354
SOLIII
Debt Instrument [Line Items]
Debt discount, net, non-current	(121)	(132)
Debt discount, net, current	0	0
Deferred financing costs, net, non-current	(5,799)	(6,319)
Deferred financing costs, net, current	$ 0	$ 0
SOLIII | Solar asset-backed notes
Debt Instrument [Line Items]
Weighted average effective interest rate	2.79%	2.73%
Long-term debt, gross, non-current	$ 281,098	$ 294,069
Long-term debt, gross, current	16,561	16,590
HELVI
Debt Instrument [Line Items]
Debt discount, net, non-current	(42)	(48)
Debt discount, net, current	0	0
Deferred financing costs, net, non-current	(3,051)	(3,477)
Deferred financing costs, net, current	$ 0	$ 0
HELVI | Solar loan-backed notes
Debt Instrument [Line Items]
Weighted average effective interest rate	2.09%	2.02%
Long-term debt, gross, non-current	$ 168,510	$ 181,625
Long-term debt, gross, current	19,289	21,152
HELVII
Debt Instrument [Line Items]
Debt discount, net, non-current	(40)	(45)
Debt discount, net, current	0	0
Deferred financing costs, net, non-current	(2,294)	(2,587)
Deferred financing costs, net, current	$ 0	$ 0
HELVII | Solar loan-backed notes
Debt Instrument [Line Items]
Weighted average effective interest rate	2.50%	2.44%
Long-term debt, gross, non-current	$ 129,349	$ 141,407
Long-term debt, gross, current	16,026	12,580
HELVIII
Debt Instrument [Line Items]
Debt discount, net, non-current	(5,487)	0
Debt discount, net, current	0	0
Deferred financing costs, net, non-current	(4,250)	0
Deferred financing costs, net, current	$ 0	$ 0
HELVIII | Solar loan-backed notes
Debt Instrument [Line Items]
Weighted average effective interest rate	3.54%
Long-term debt, gross, non-current	$ 253,739	$ 0
Long-term debt, gross, current	30,221	0
SOLIV
Debt Instrument [Line Items]
Debt discount, net, non-current	(11,620)	0
Debt discount, net, current	0	0
Deferred financing costs, net, non-current	(8,305)	0
Deferred financing costs, net, current	$ 0	$ 0
SOLIV | Solar asset-backed notes
Debt Instrument [Line Items]
Weighted average effective interest rate	5.70%
Long-term debt, gross, non-current	$ 341,900	$ 0
Long-term debt, gross, current	7,932	0
HELIX
Debt Instrument [Line Items]
Debt discount, net, non-current	(3,725)	0
Debt discount, net, current	0	0
Deferred financing costs, net, non-current	(3,417)	0
Deferred financing costs, net, current	$ 0	$ 0
HELIX | Solar loan-backed notes
Debt Instrument [Line Items]
Weighted average effective interest rate	5.41%
Long-term debt, gross, non-current	$ 202,043	$ 0
Long-term debt, gross, current	$ 23,169	$ 0

Long-Term Debt - Narrative (Det

Long-Term Debt - Narrative (Details) - USD ($)	1 Months Ended			3 Months Ended
	Aug. 31, 2022	Jun. 30, 2022	Feb. 28, 2022	Sep. 30, 2022	Jun. 30, 2021	Jul. 31, 2022	Mar. 31, 2021	Oct. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Borrowing capacity				$ 348,500,000
Capped call transactions	$ 48,400,000			(48,420,000)	$ (91,655,000)
Capped call transaction (in USD per share)	$ 34.24
EZOP
Debt Instrument [Line Items]
Repayments of debt	$ 151,000,000
EZOP | Revolving credit facility
Debt Instrument [Line Items]
Maximum borrowing capacity	450,000,000	$ 400,000,000							$ 200,000,000
EZOP | Revolving credit facility | Revolving credit facility
Debt Instrument [Line Items]
Borrowing capacity				41,000,000
Maximum borrowing capacity	585,000,000	475,000,000		575,000,000		$ 535,000,000	$ 350,000,000
TEPH
Debt Instrument [Line Items]
Repayments of debt		271,000,000
TEPH | Revolving credit facility | Revolving credit facility
Debt Instrument [Line Items]
Borrowing capacity				247,500,000
Maximum borrowing capacity				639,700,000				$ 600,000,000
Aggregate committed amount				564,700,000				$ 460,700,000
AP8 | Revolving credit facility | Revolving credit facility
Debt Instrument [Line Items]
Borrowing capacity				$ 60,000,000
HELVIII | Series 2022-A Class A
Debt Instrument [Line Items]
Principal amount of debt issued			$ 131,900,000
Discount			1.55%
Stated interest rate			2.79%
HELVIII | Series 2022-A Class B
Debt Instrument [Line Items]
Principal amount of debt issued			$ 102,200,000
Discount			2.23%
Stated interest rate			3.13%
HELVIII | Series 2022-A Class C
Debt Instrument [Line Items]
Principal amount of debt issued			$ 63,800,000
Discount			2.62%
Stated interest rate			3.53%
SOLIV | Series 2022-1 Class A
Debt Instrument [Line Items]
Principal amount of debt issued		$ 317,000,000
Discount		3.55%
Stated interest rate		4.95%
SOLIV | Series 2022-1 Class B
Debt Instrument [Line Items]
Principal amount of debt issued		$ 38,000,000
Discount		2.10%
Stated interest rate		6.35%
HELIX | 2022-B Class A
Debt Instrument [Line Items]
Principal amount of debt issued	$ 178,000,000
Discount	0.69%
Stated interest rate	5%
HELIX | 2022-B Class B
Debt Instrument [Line Items]
Principal amount of debt issued	$ 49,700,000
Discount	5.10%
Stated interest rate	6%
SEI | Convertible senior notes | 2.625% convertible senior notes
Debt Instrument [Line Items]
Principal amount of debt issued	$ 600,000,000
Discount	2.50%
Stated interest rate	2.625%			2.625%
Purchase price	$ 585,000,000

Long-Term Debt - Schedule of Fa

Long-Term Debt - Schedule of Fair Value of Long-term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Aug. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Net deferred financing costs and debt discounts	$ 119,700		$ 78,900
Carrying Value
Debt Instrument [Line Items]
Long-term debt	5,117,942		3,344,351
Estimated Fair Value
Debt Instrument [Line Items]
Long-term debt	$ 4,730,988		3,331,831
SEI | Convertible senior notes | 0.25% convertible senior notes
Debt Instrument [Line Items]
Stated interest rate	0.25%
SEI | Convertible senior notes | 2.625% convertible senior notes
Debt Instrument [Line Items]
Stated interest rate	2.625%	2.625%
SEI | Carrying Value | Convertible senior notes | 0.25% convertible senior notes
Debt Instrument [Line Items]
Long-term debt	$ 575,000		575,000
SEI | Carrying Value | Convertible senior notes | 2.625% convertible senior notes
Debt Instrument [Line Items]
Long-term debt	600,000		0
SEI | Estimated Fair Value | Convertible senior notes | 0.25% convertible senior notes
Debt Instrument [Line Items]
Long-term debt	522,821		568,732
SEI | Estimated Fair Value | Convertible senior notes | 2.625% convertible senior notes
Debt Instrument [Line Items]
Long-term debt	593,971		0
Sunnova Energy Corporation | Carrying Value | Convertible senior notes | 5.875% senior notes
Debt Instrument [Line Items]
Long-term debt	400,000		400,000
Sunnova Energy Corporation | Estimated Fair Value | Convertible senior notes | 5.875% senior notes
Debt Instrument [Line Items]
Long-term debt	365,699		391,917
HELII | Carrying Value | Solar asset-backed notes
Debt Instrument [Line Items]
Long-term debt	212,648		226,417
HELII | Estimated Fair Value | Solar asset-backed notes
Debt Instrument [Line Items]
Long-term debt	208,627		253,079
RAYSI | Carrying Value | Solar asset-backed notes
Debt Instrument [Line Items]
Long-term debt	116,658		120,365
RAYSI | Estimated Fair Value | Solar asset-backed notes
Debt Instrument [Line Items]
Long-term debt	106,933		129,575
HELIII | Carrying Value | Solar loan-backed notes
Debt Instrument [Line Items]
Long-term debt	107,255		116,247
HELIII | Estimated Fair Value | Solar loan-backed notes
Debt Instrument [Line Items]
Long-term debt	97,083		120,465
SOLI | Carrying Value | Solar asset-backed notes
Debt Instrument [Line Items]
Long-term debt	369,482		381,867
SOLI | Estimated Fair Value | Solar asset-backed notes
Debt Instrument [Line Items]
Long-term debt	320,655		382,511
HELIV | Carrying Value | Solar loan-backed notes
Debt Instrument [Line Items]
Long-term debt	119,209		128,516
HELIV | Estimated Fair Value | Solar loan-backed notes
Debt Instrument [Line Items]
Long-term debt	105,559		123,189
SOLII | Carrying Value | Solar asset-backed notes
Debt Instrument [Line Items]
Long-term debt	240,593		247,469
SOLII | Estimated Fair Value | Solar asset-backed notes
Debt Instrument [Line Items]
Long-term debt	193,442		231,894
HELV | Carrying Value | Solar loan-backed notes
Debt Instrument [Line Items]
Long-term debt	161,060		172,097
HELV | Estimated Fair Value | Solar loan-backed notes
Debt Instrument [Line Items]
Long-term debt	141,723		165,848
SOLIII | Carrying Value | Solar asset-backed notes
Debt Instrument [Line Items]
Long-term debt	297,659		310,659
SOLIII | Estimated Fair Value | Solar asset-backed notes
Debt Instrument [Line Items]
Long-term debt	245,034		302,994
HELVI | Carrying Value | Solar loan-backed notes
Debt Instrument [Line Items]
Long-term debt	187,799		202,777
HELVI | Estimated Fair Value | Solar loan-backed notes
Debt Instrument [Line Items]
Long-term debt	161,195		199,159
HELVII | Carrying Value | Solar loan-backed notes
Debt Instrument [Line Items]
Long-term debt	145,375		153,987
HELVII | Estimated Fair Value | Solar loan-backed notes
Debt Instrument [Line Items]
Long-term debt	127,664		153,518
HELVIII | Carrying Value | Solar loan-backed notes
Debt Instrument [Line Items]
Long-term debt	283,960		0
HELVIII | Estimated Fair Value | Solar loan-backed notes
Debt Instrument [Line Items]
Long-term debt	257,707		0
SOLIV | Carrying Value | Solar asset-backed notes
Debt Instrument [Line Items]
Long-term debt	349,832		0
SOLIV | Estimated Fair Value | Solar asset-backed notes
Debt Instrument [Line Items]
Long-term debt	342,301		0
HELIX | Carrying Value | Solar loan-backed notes
Debt Instrument [Line Items]
Long-term debt	225,212		0
HELIX | Estimated Fair Value | Solar loan-backed notes
Debt Instrument [Line Items]
Long-term debt	214,374		0
Revolving credit facility | EZOP | Carrying Value | Revolving credit facility
Debt Instrument [Line Items]
Long-term debt	409,000		190,000
Revolving credit facility | EZOP | Estimated Fair Value | Revolving credit facility
Debt Instrument [Line Items]
Long-term debt	409,000		190,000
Revolving credit facility | TEPH | Carrying Value | Revolving credit facility
Debt Instrument [Line Items]
Long-term debt	317,200		118,950
Revolving credit facility | TEPH | Estimated Fair Value | Revolving credit facility
Debt Instrument [Line Items]
Long-term debt	$ 317,200		$ 118,950

Derivative Instruments - Narrat

Derivative Instruments - Narrative (Details) - Interest Rate Swap - USD ($)	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Derivative [Line Items]
Aggregate notional amount of derivative	$ 832,964,000		$ 532,006,000
EZOP
Derivative [Line Items]
Aggregate notional amount of derivative	506,600,000	$ 180,200,000
Aggregate notional amount of unwound derivative	360,200,000	131,700,000
Realized gain	19,600,000
Realized loss		68,000
TEPH
Derivative [Line Items]
Aggregate notional amount of derivative	333,700,000	236,300,000
Aggregate notional amount of unwound derivative	515,400,000	121,300,000
Realized gain	$ 27,800,000
Realized loss		$ 1,600,000

Derivative Instruments - Outsta

Derivative Instruments - Outstanding Derivative Instruments (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021
Interest rate swap
Derivative [Line Items]
Aggregate Notional Amount	$ 832,964,000	$ 532,006,000
EZOP | Interest rate swap
Derivative [Line Items]
Aggregate Notional Amount	$ 506,600,000		$ 180,200,000
EZOP | Interest Rate Swap One
Derivative [Line Items]
Fixed Interest Rate	0.89%	1%
Aggregate Notional Amount	$ 499,215,000	$ 261,836,000
TEPH | Interest rate swap
Derivative [Line Items]
Aggregate Notional Amount	333,700,000		$ 236,300,000
TEPH | Interest Rate Swap Two
Derivative [Line Items]
Aggregate Notional Amount	$ 333,749,000	$ 270,170,000
TEPH | Interest Rate Swap Two | Minimum
Derivative [Line Items]
Fixed Interest Rate	1.75%	0.121%
TEPH | Interest Rate Swap Two | Maximum
Derivative [Line Items]
Fixed Interest Rate	2.65%	2.534%

Derivative Instruments - Balanc

Derivative Instruments - Balance Sheet (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration]	Other long-term liabilities	Other long-term liabilities
Not designated as hedging instrument | Interest rate swap
Derivatives, Fair Value [Line Items]
Derivative asset, fair value	$ 117,544	$ 14,351
Derivative liability, fair value	0	(5,330)
Total, net	$ 117,544	$ 9,021

Derivative Instruments - Intere

Derivative Instruments - Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized gain			$ (35,685)	$ (5,574)
Interest Rate Swap | Interest Expense
Derivative Instruments, Gain (Loss) [Line Items]
Realized (gain) loss	$ (1,928)	$ 586	(47,434)	1,693
Unrealized gain	(29,059)	(2,642)	(35,685)	(5,574)
Total	$ (30,987)	$ (2,056)	$ (83,119)	$ (3,881)

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Effective income tax rate	0%	0%	0%	0%
Income tax penalties and interest accrued	$ 0		$ 0		$ 0

Redeemable Noncontrolling Int_2

Redeemable Noncontrolling Interests and Noncontrolling Interests - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended			3 Months Ended
	Sep. 30, 2022	May 31, 2022	Feb. 28, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022
Noncontrolling Interest [Line Items]
Contributions from redeemable noncontrolling interests and noncontrolling interests				$ 5,990	$ 13,423	$ 3,757
Class A members | TEP6E
Noncontrolling Interest [Line Items]
Contributions from redeemable noncontrolling interests and noncontrolling interests		$ 17,500
Class A members | TEP6B
Noncontrolling Interest [Line Items]
Contributions from redeemable noncontrolling interests and noncontrolling interests			$ 150,000
Class A members | TEP6D
Noncontrolling Interest [Line Items]
Contributions from redeemable noncontrolling interests and noncontrolling interests	$ 25,000

Stockholders' Equity (Details)

Stockholders' Equity (Details)	1 Months Ended
	Apr. 30, 2022 shares
SunStreet Energy Group, LLC
Repayments of Debt [Line Items]
Shares issued (in shares)	694,446

Equity-Based Compensation - Nar

Equity-Based Compensation - Narrative (Details) - USD ($)	1 Months Ended		3 Months Ended		9 Months Ended
	May 31, 2022	Feb. 28, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options vested (in shares)			0	0	16,816	0
Stock options vested, value			$ 0	$ 0	$ 309,000	$ 0
Total unrecognized compensation expense			$ 7,000,000		$ 7,000,000
Long-Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Additional shares authorized during period (in shares)		1,265,071
Shares authorized (in shares)							5,667,761
Common stock outstanding							5%
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period					2 years 1 month 17 days
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period					1 year 6 months 18 days
Stock units vested (in shares)			245,740	240,010	948,404	913,434
Restricted stock units, vested			$ 3,400,000	$ 2,900,000	$ 18,500,000	$ 15,300,000
Unrecognized compensation expense			$ 27,100,000		$ 27,100,000
Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized (in shares)	750,000
Discount from market price	95%

Equity-Based Compensation - Sto

Equity-Based Compensation - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Mar. 31, 2022	Sep. 30, 2022
Number of Stock Options
Outstanding, beginning balance (in shares)	2,765,815	2,765,815
Granted (in shares)		538,758
Exercised (in shares)		(2,884)
Forfeited (in shares)		(1,966)
Outstanding, ending balance (in shares)		3,299,723
Number of stock options, exercisable (in shares)		2,710,515
Number of stock options, vested and expected to vest (in shares)		3,299,723
Number of stock options, non-vested (in shares)		589,208
Weighted Average Exercise Price
Outstanding, beginning balance (in USD per share)	$ 16.71	$ 16.71
Granted (in USD per share)		27.62
Exercised (in USD per share)		10.14
Forfeited (in USD per share)		40.14
Outstanding, ending balance (in USD per share)		18.48
Weighted average exercise price, exercisable (in USD per share)		16.26
Weighted average exercise price, vested and expected to vest (in USD per share)		$ 18.48
Weighted Average Remaining Contractual Term (Years)
Outstanding, balance	4 years 10 months 28 days	5 years 7 days
Granted		9 years 5 months 23 days
Weighted average remaining contractual term, exercisable		4 years 25 days
Weighted average remaining contractual term, vested and expected to vest		5 years 7 days
Weighted Average Grant Date Fair Value
Granted (in USD per share)		$ 14.37
Forfeited (in USD per share)		18.15
Weighted average grant date fair value, non-vested (in USD per share)		$ 14.71
Aggregate Intrinsic Value
Outstanding, beginning balance	$ 31,874	$ 31,874
Exercised		46
Outstanding, ending balance		18,379
Aggregate intrinsic value, exercisable		18,379
Aggregate intrinsic value, vested and expected to vest		$ 18,379

Equity-Based Compensation - Res

Equity-Based Compensation - Restricted Stock Activity (Details) - Restricted Stock Units - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Number of Restricted Stock Units
Outstanding, beginning balance (in shares)			1,649,789
Granted (in shares)			1,015,949
Vested (in shares)	(245,740)	(240,010)	(948,404)	(913,434)
Forfeited (in shares)			(62,939)
Outstanding, ending balance (in shares)	1,654,395		1,654,395
Weighted Average Grant Date Fair Value
Outstanding. beginning balance (in USD per share)	$ 20.93		$ 20.93		$ 18.48
Granted (in USD per share)			23.85
Vested (in USD per share)			19.47
Forfeited (in USD per share)			25.86
Outstanding, ending balance (in USD per share)	$ 20.93		$ 20.93

Basic and Diluted Net Loss Pe_3

Basic and Diluted Net Loss Per Share - Schedule of Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings Per Share [Abstract]
Net loss attributable to common stockholders—basic	$ (62,047)	$ (27,541)	$ (132,633)	$ (123,920)
Net loss attributable to common stockholders - diluted	$ (62,047)	$ (27,541)	$ (132,633)	$ (123,920)
Net loss per share attributable to common stockholders - basic (in USD per share)	$ (0.54)	$ (0.25)	$ (1.16)	$ (1.12)
Net loss per share attributable to common stockholders - diluted (in USD per share)	$ (0.54)	$ (0.25)	$ (1.16)	$ (1.12)
Weighted average common shares outstanding - basic (in shares)	114,816,879	112,159,698	114,293,251	110,185,333
Weighted average common shares outstanding - diluted (in shares)	114,816,879	112,159,698	114,293,251	110,185,333

Basic and Diluted Net Loss Pe_4

Basic and Diluted Net Loss Per Share - Anti-Dilutive Weighted Average Shares (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Equity-based compensation awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	5,033,658	4,574,364	4,906,182	4,727,081
Convertible senior notes
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	25,294,010	16,628,073	19,548,462	8,875,206

Commitments and Contingencies -

Commitments and Contingencies - Narrative (Details) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Dec. 31, 2021 USD ($) MWh	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)
Loss Contingencies [Line Items]
Current portion of performance guarantee obligations	$ 3,175	$ 2,519		$ 2,519
Other commitment	$ 81,800	106,100		106,100
Payments for dealer commitments		6,700	$ 5,800	33,600	$ 25,700
Megawatt hours to be purchased | MWh	1,420
Payments for purchase obligations		55,400		141,100
Minimum
Loss Contingencies [Line Items]
Purchase obligation, estimated commitment range				480,000
Maximum
Loss Contingencies [Line Items]
Purchase obligation, estimated commitment range				520,000
Performance Guarantee Obligations
Loss Contingencies [Line Items]
Performance guarantee obligations	$ 5,293	3,934	$ 4,766	3,934	$ 4,766	$ 5,718
Current portion of performance guarantee obligations	3,200	2,500		2,500
Long-term portion of performance guarantee obligations	$ 2,100	$ 1,400		$ 1,400

Commitments and Contingencies_2

Commitments and Contingencies - Performance Guarantee Obligations (Details) - Performance Guarantee Obligations - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Performance Guarantee Obligations [Roll Forward]
Balance at beginning of period	$ 5,293	$ 5,718
Accruals	1,811	2,323
Settlements	(3,170)	(3,275)
Balance at end of period	$ 3,934	$ 4,766

Commitments and Contingencies_3

Commitments and Contingencies - Lease Expenses and Other Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Operating lease expense	$ 676	$ 401	$ 2,061	$ 1,164
Finance lease expense:
Amortization expense	201	157	562	251
Interest on lease liabilities	15	14	42	24
Short-term lease expense	37	29	97	51
Variable lease expense	190	274	712	831
Total	$ 1,119	$ 875	$ 3,474	$ 2,321

Commitments and Contingencies_4

Commitments and Contingencies - Lease Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Right-of-use assets:
Operating leases	$ 15,193	$ 16,483
Finance leases	2,384	2,187
Total right-of-use assets	17,577	18,670
Current lease liabilities:
Operating leases	2,267	1,190
Finance leases	735	660
Long-term leases liabilities:
Operating leases	16,136	17,684
Finance leases	963	1,024
Total lease liabilities	$ 20,101	$ 20,558
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other current liabilities	Other current liabilities
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Other current liabilities	Other current liabilities
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other long-term liabilities	Other long-term liabilities
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other long-term liabilities	Other long-term liabilities

Commitments and Contingencies_5

Commitments and Contingencies - Other Lease Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flow from operating leases	$ 1,242	$ 883
Operating cash flows from finance leases	42	24
Financing cash flows from finance leases	601	283
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	226	452
Finance leases	758	2,089
Leasehold improvements reimbursements	$ 45	$ 423
Weighted average remaining lease term (years):
Operating leases	6 years 10 months 6 days	7 years 6 months 14 days
Finance leases	2 years 11 months 4 days	3 years 4 months 6 days
Weighted average discount rate (percent)
Operating leases	3.95%	3.92%
Finance leases	3.83%	3.11%

Commitments and Contingencies_6

Commitments and Contingencies - Future Minimum Lease Payments (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Operating Leases
Remaining 2022	$ 653
2023	3,133
2024	3,118
2025	3,168
2026	3,236
2027 and thereafter	8,789
Total	22,097
Amount representing interest	(2,821)
Amount representing leasehold incentives	(873)
Present value of future payments	18,403
Current portion of lease liability	(2,267)	$ (1,190)
Long-term portion of lease liability	16,136	17,684
Finance Leases
Remaining 2022	205
2023	750
2024	542
2025	248
2026	44
2027 and thereafter	0
Total	1,789
Amount representing interest	(91)
Amount representing leasehold incentives	0
Present value of future payments	1,698
Current portion of lease liability	(735)	(660)
Long-term portion of lease liability	$ 963	$ 1,024

Commitments and Contingencies_7

Commitments and Contingencies - Dealer Commitments (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Other Commitments [Line Items]
Total	$ 106,100	$ 81,800
Long-Term Dealer Commitments
Other Commitments [Line Items]
Remaining 2022	3,528
2023	35,977
2024	37,755
2025	27,971
2026	6,904
2027 and thereafter	0
Total	$ 112,135

Commitments and Contingencies_8

Commitments and Contingencies - Information Technology Commitments (Details) $ in Thousands	Sep. 30, 2022 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Remaining 2022	$ 16,011
2023	22,918
2024	5,612
2025	18
2026	0
2027 and thereafter	0
Total	$ 44,559

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended
	Oct. 27, 2022	Sep. 30, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Oct. 31, 2020
Subsequent Event [Line Items]
Contributions from redeemable noncontrolling interests and noncontrolling interests			$ 5,990	$ 13,423	$ 3,757
TEPH | Revolving credit facility | Revolving credit facility
Subsequent Event [Line Items]
Aggregate committed amount		$ 564,700	564,700			$ 460,700
Maximum borrowing capacity		639,700	$ 639,700			$ 600,000
TEP6D | Class A members
Subsequent Event [Line Items]
Contributions from redeemable noncontrolling interests and noncontrolling interests		$ 25,000
Subsequent Event | TEPH | Revolving credit facility | Revolving credit facility
Subsequent Event [Line Items]
Aggregate committed amount	$ 600,000
Maximum borrowing capacity	689,700
Subsequent Event | TEP6C | Class A members
Subsequent Event [Line Items]
Contributions from redeemable noncontrolling interests and noncontrolling interests	30,000
Subsequent Event | TEP6D | Class A members
Subsequent Event [Line Items]
Contributions from redeemable noncontrolling interests and noncontrolling interests	$ 75,000