Sunpower (SPWRQ) 10-Q 6 May 21 2021 Q1 Quarterly report Financial data

Cover page

Cover page - shares	3 Months Ended
	Apr. 04, 2021	Apr. 30, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Apr. 4, 2021
Document Transition Report	false
Entity File Number	001-34166
Entity Registrant Name	SUNPOWER CORP
Entity Central Index Key	0000867773
Current Fiscal Year End Date	--01-02
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	94-3008969
Entity Address, Address Line One	51 Rio Robles
Entity Address, City or Town	San Jose
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	95134
City Area Code	408
Local Phone Number	240-5500
Title of 12(b) Security	Common Stock
Trading Symbol	SPWR
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		172,521,148
Amendment Flag	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands		Apr. 04, 2021	Jan. 03, 2021
Current assets:
Cash and cash equivalents		$ 213,105	$ 232,765
Restricted cash and cash equivalents, current portion		10,928	5,518
Short-term investments		325,380	0
Accounts receivable, net	[1]	104,804	108,864
Contract assets	[1]	114,029	114,506
Inventories		230,694	210,582
Advances to suppliers, current portion		3,852	2,814
Project assets - plants and land, current portion		9,746	21,015
Prepaid expenses and other current assets	[1]	89,109	94,251
Total current assets		1,101,647	790,315
Restricted cash and cash equivalents, net of current portion		5,404	8,521
Property, plant and equipment, net		46,790	46,766
Operating lease right-of-use assets		62,722	54,070
Solar power systems leased, net		48,331	50,401
Advances to suppliers, net of current portion		2,813	0
Other intangible assets, net		298	697
Other long-term assets		326,766	695,712
Total assets		1,594,771	1,646,482
Current liabilities:
Accounts payable	[1]	156,552	166,066
Accrued liabilities	[1]	113,046	121,915
Operating lease liabilities, current portion		13,529	9,736
Contract liabilities, current portion	[1]	60,385	72,424
Short-term debt		94,724	97,059
Convertible debt, current portion	[1]	62,456	62,531
Total current liabilities		500,692	529,731
Long-term		86,436	56,447
Convertible debt	[1]	422,749	422,443
Operating lease liabilities, net of current portion		42,340	43,608
Contract liabilities, net of current portion	[1]	28,748	30,170
Other long-term liabilities		152,943	157,597
Total liabilities		1,233,908	1,239,996
Commitments and contingencies (Note 8)
Equity:
Preferred stock, $0.001 par value; 10,000 shares authorized; none issued and outstanding as of April 4, 2021 and January 3, 2021		0	0
Common stock, $0.001 par value, 367,500 shares authorized; 185,354 shares issued, and 172,264 shares outstanding as of April 4, 2021; 183,442 shares issued, and 170,428 shares outstanding as of January 3, 2021		172	170
Additional paid-in capital		2,691,423	2,685,920
Accumulated deficit		(2,133,239)	(2,085,246)
Accumulated other comprehensive income		8,897	8,799
Treasury stock, at cost: 13,090 shares of common stock as of April 4, 2021; 13,014 shares of common stock as of January 3, 2021		(207,596)	(205,476)
Total stockholders' equity		359,657	404,167
Noncontrolling interests in subsidiaries		1,206	2,319
Total equity		360,863	406,486
Total liabilities and equity		$ 1,594,771	$ 1,646,482
[1]	We have related-party balances for transactions made with Total SE and its affiliates, Maxeon Solar and unconsolidated entities in which we have a direct equity investment. These related-party balances are recorded within the "accounts receivable, net," "contract assets," "prepaid expenses and other current assets," "other long-term assets," "accounts payable," "accrued liabilities," "contract liabilities, current portion," "convertible debt, net of current portion," and "contract liabilities, net of current portion" financial statement line items on our condensed consolidated balance sheets (see Note 2, Note 8, Note 9, Note 10, and Note 11).

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parentheticals) - $ / shares	Apr. 04, 2021	Jan. 03, 2021
Statement of Financial Position [Abstract]
Preferred stock par value per share (in dollars per share)	$ 0.001	$ 0.001
Preferred stock shares authorized (in shares)	10,000,000	10,000,000
Preferred stock shares issued (in shares)	0	0
Preferred stock shares outstanding (in shares)	0	0
Common stock par value per share (in dollars per share)	$ 0.001	$ 0.001
Common stock shares authorized (in shares)	367,500,000	367,500,000
Common stock shares issued (in shares)	185,354,000	183,442,000
Common stock shares outstanding (in shares)	172,264,000	170,428,000
Common stock shares held as treasury stock (in shares)	13,090,000	13,014,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Apr. 04, 2021	Mar. 29, 2020
Revenue:
Revenue		$ 306,398	$ 290,546
Cost of revenue:
Cost of Revenue		256,524	261,362
Gross profit		49,874	29,184
Operating expenses:
Research and development	[1]	5,015	7,768
Sales, general, and administrative		47,744	40,717
Restructuring charges		3,766	1,576
Gain on sale and impairment of residential lease assets		(226)	(274)
Income from transition services agreement, net		(3,087)	0
Total operating expenses		53,212	49,787
Operating loss		(3,338)	(20,603)
Other income (expense), net:
Interest income		52	404
Interest expense	[1]	(7,965)	(9,193)
Other, net		(43,471)	50,438
Other (expense) income, net		(51,384)	41,649
(Loss) income from continuing operations before income taxes and equity in earnings of unconsolidated investees		(54,722)	21,046
Benefit from (provision for) income taxes		5,224	(885)
Net (loss) income from continuing operations		(49,498)	20,161
Loss from discontinued operations before income taxes and equity in losses of unconsolidated investees		0	(21,560)
Provision for income taxes		0	(984)
Equity in earnings of unconsolidated investees		0	245
Net loss from discontinued operations, net of taxes		0	(22,299)
Net loss		(49,498)	(2,138)
Net loss from continuing operations attributable to noncontrolling interests		1,113	1,379
Net income from discontinued operations attributable to noncontrolling interests		0	(672)
Net loss attributable to noncontrolling interests		1,113	707
Net (loss) income attributable to stockholders - continuing operations		(48,385)	21,540
Net loss attributable to stockholders - discontinued operations		0	(22,971)
Net loss attributable to stockholders		$ (48,385)	$ (1,431)
Net (loss) income per share attributable to stockholders - basic:
Continuing operations (usd per share)		$ (0.28)	$ 0.13
Discontinued operations (usd per share)		0	(0.14)
Basic net loss per share (usd per share)		(0.28)	(0.01)
Net (loss) income per share attributable to stockholders - diluted:
Continuing operations (usd per share)		(0.28)	0.12
Discontinued operations (usd per share)		0	(0.13)
Net loss per share - diluted (usd per share)		$ (0.28)	$ (0.01)
Weighted-average shares:
Basic (shares)		171,200	168,822
Diluted (shares)		171,200	177,277
Solar power systems, components, and other
Revenue:
Revenue	[1]	$ 301,237	$ 285,289
Cost of revenue:
Cost of Revenue		254,104	258,637	[1]
Residential leasing
Revenue:
Revenue		1,120	1,324
Cost of revenue:
Cost of Revenue		601	1,296
Solar services
Revenue:
Revenue		4,041	3,933
Cost of revenue:
Cost of Revenue		$ 1,819	$ 1,429
[1]	We have related-party transactions with Total SE and its affiliates, Maxeon Solar, and unconsolidated entities in which we have a direct equity investment. These related-party transactions are recorded within the "revenue: solar power systems, components, and other," "cost of revenue: solar power systems, components, and other," "operating expenses: research and development," "operating expenses: sales, general and administrative," "operating expenses: income transition services agreement, net," and "other income (expense), net: interest expense," "benefit from (provision for) income taxes" financial statement line items in our condensed consolidated statements of operations (see Note 2, Note 9, and Note 11).

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (49,498)	$ (2,138)
Components of other comprehensive income (loss):
Translation adjustment	(2)	(775)
Net change in derivatives	147	1,688
Net gain (loss) on long-term pension liability obligation	0	(49)
Provision for income taxes	(47)	(141)
Total other comprehensive income	98	723
Total comprehensive loss	(49,400)	(1,415)
Comprehensive loss attributable to noncontrolling interests	1,113	707
Comprehensive loss attributable to stockholders	$ (48,287)	$ (708)

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Equity - USD ($) $ in Thousands	Total	Total Stockholders’ Equity	Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Noncontrolling Interests in Subsidiaries
Common stock, outstanding, beginning balance (in shares) at Dec. 29, 2019			168,121,000
Stockholders' equity, beginning of period at Dec. 29, 2019	$ 21,499	$ 10,163	$ 168	$ 2,661,819	$ (192,633)	$ (9,512)	$ (2,449,679)	$ 11,336
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(2,138)	(1,431)					(1,431)	(707)
Other comprehensive income	723	723				723
Issuance of restricted stock to employees, net of cancellations (in shares)			2,452,000
Issuance of restricted stock to employees, net of cancellations	3	3	$ 3
Stock-based compensation expense	6,885	6,885		6,885
Purchases of treasury stock (in shares)			(818,000)
Purchases of treasury stock	(6,911)	(6,911)	$ (1)		(6,910)
Common stock, outstanding, ending balance (in shares) at Mar. 29, 2020			169,755,000
Stockholders' equity, end of period at Mar. 29, 2020	$ 20,061	9,432	$ 170	2,668,704	(199,543)	(8,789)	(2,451,110)	10,629
Common stock, outstanding, beginning balance (in shares) at Jan. 03, 2021	170,428,000		170,428,000
Stockholders' equity, beginning of period at Jan. 03, 2021	$ 406,486	404,167	$ 170	2,685,920	(205,476)	8,799	(2,085,246)	2,319
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(49,498)	(48,385)					(48,385)	(1,113)
Other comprehensive income	98	98				98
Issuance of restricted stock to employees, net of cancellations (in shares)			1,908,000
Issuance of restricted stock to employees, net of cancellations	2	2	$ 2
Stock-based compensation expense	5,437	5,437		5,437			0
Bond/Debentures Conversion (in shares)			4,000
Bond/debentures conversion	155	155		155
Purchases of treasury stock (in shares)			(76,000)
Purchases of treasury stock	(2,120)	(2,120)			(2,120)
Other adjustments	$ 303	303		(89)			392
Common stock, outstanding, ending balance (in shares) at Apr. 04, 2021	172,264,000		172,264,000
Stockholders' equity, end of period at Apr. 04, 2021	$ 360,863	$ 359,657	$ 172	$ 2,691,423	$ (207,596)	$ 8,897	$ (2,133,239)	$ 1,206

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
		Apr. 04, 2021	Mar. 29, 2020	Jan. 03, 2021
Cash flows from operating activities:
Net loss		$ (49,498)	$ (2,138)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization		2,849	16,892
Stock-based compensation expense		5,437	6,867
Non-cash interest expense		1,505	1,910
Equity in earnings of unconsolidated investees		0	(245)
Loss (gain) on equity investments with readily determinable fair value		44,730	(49,152)
Gain on retirement of convertible debt		0	(2,956)
Gain on sale of investments		(1,162)	0
Deferred income taxes		(3,901)	(349)
Other, net		(5,280)	289
Changes in operating assets and liabilities:
Accounts receivable		4,114	(17,880)
Contract assets		487	295
Inventories		(8,271)	(43,061)
Project assets		9,197	(8,881)
Prepaid expenses and other assets		1,429	18,635
Operating lease right-of-use assets		2,875	2,923
Advances to suppliers		(3,852)	8,936
Accounts payable and other accrued liabilities		(24,152)	(92,599)
Contract liabilities		(13,461)	(16,130)
Operating lease liabilities		(3,429)	(2,849)
Net cash used in operating activities		(40,383)	(179,493)
Cash flows from investing activities:
Purchases of property, plant and equipment		(1,964)	(6,213)
Cash paid for solar power systems		(635)	(610)
Cash received from sale of investments		1,200	0
Proceeds from sale of distribution rights of debt refinancing		0	46,149
Net cash provided by (used in) investing activities		(1,399)	39,326
Cash flows from financing activities:
Proceeds from bank loans and other debt		71,323	76,544
Repayment of bank loans and other debt		(35,076)	(65,730)
Proceeds from issuance of non-recourse residential and commercial financing, net of issuance costs		0	9,754
Repayment of non-recourse residential and commercial financing		(9,713)	0
Cash paid for repurchase of convertible debt		0	(87,141)
Receipt of contingent asset of a prior business combination		0	423
Equity offering costs paid		0	(928)
Purchases of stock for tax withholding obligations on vested restricted stock		(2,118)	(6,914)
Net cash provided by financing activities		24,416	(73,992)
Effect of exchange rate changes on cash, cash equivalents, restricted cash and restricted cash equivalents		0	(216)
Net decrease in cash, cash equivalents, restricted cash and restricted cash equivalents		(17,367)	(214,375)
Cash, cash equivalents, restricted cash and restricted cash equivalents, beginning of period	[1]	246,804	458,657	$ 458,657
Cash, cash equivalents, restricted cash and restricted cash equivalents, end of period	[1]	229,437	244,282	$ 246,804
Non-cash transactions:
Costs of solar power systems funded by liabilities		0	1,184
Property, plant and equipment acquisitions funded by liabilities		1,647	2,385
Right-of-use assets obtained in exchange for lease obligations		11,528	12,461
Accounts payable balances reclassified to short-term debt		0	5,000
Contractual obligations satisfied by inventory		$ 0	$ 975
[1]	The "Cash, cash equivalents, restricted cash and restricted cash equivalents" balance consisted of "cash and cash equivalents", "restricted cash and cash equivalents, current portion" and "restricted cash and cash equivalents, net of current portion" financial statement line items on the condensed consolidated balance sheets for the respective periods.

Organization And Summary Of Sig

Organization And Summary Of Significant Accounting Policies	3 Months Ended
	Apr. 04, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization And Summary Of Significant Accounting Policies	ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Organization SunPower Corporation (together with its subsidiaries, "SunPower," the “Company,” "we," "us," or "our") is a leading solar technology and energy services provider that delivers complete solar solutions to customers primarily in the United States and Canada through an array of hardware, software, and financing options and "Smart Energy" solutions. Our Smart Energy initiative is designed to add layers of intelligent control to homes, buildings, and grids—all personalized through easy-to-use customer interfaces. We are a leader in the U.S. Distributed Generation (“DG”) storage and energy services market, providing customers control over electricity consumption and resiliency during power outages while providing cost savings to homeowners, businesses, governments, schools, and utilities through multiple offerings. Our sales channels include a strong network of dealers and resellers that operate in both residential and commercial markets. SunPower is a majority-owned subsidiary of Total Solar INTL SAS ("Total," formerly Total Solar International SAS) and Total Gaz Electricité Holdings France SAS (“Total Gaz”), each a subsidiary of Total SE (“Total SE,” formerly Total SA) (see “Note 2. Transactions with Total and Total SE ). On August 26, 2020, we completed the spin-off (the “Spin-Off”) of Maxeon Solar Technologies, Ltd., a Singapore public company limited by shares (“Maxeon Solar”), consisting of certain non-U.S. operations and assets of our former SunPower Technologies business unit. As a result of the Spin-Off, we no longer consolidate Maxeon Solar within our financial results of continuing operations. For all the periods prior to the Spin-Off, the financial results of Maxeon Solar are presented as net earnings from discontinued operations on the condensed consolidated statements of operations. Liquidity We believe that our total cash and cash equivalents will be sufficient to meet our obligations over the next 12 months from the date of issuance of our financial statements, including repayment of our 0.875% senior convertible debentures due June 1, 2021 (the "0.875% debentures due 2021"), of which an aggregate principal amount of $62.5 million was outstanding as of April 4, 2021. In addition, we have historically been successful in our ability to divest certain investments, including our investment in shares of Enphase Inc., and non-core assets, secure other sources of financing, such as accessing the capital markets, and implement other cost reduction initiatives such as restructuring, to address our liquidity needs. Although we have historically been able to generate liquidity, we cannot predict, with certainty, the outcome of our actions to generate liquidity as planned. Basis of Presentation and Preparation Principles of Consolidation The accompanying condensed consolidated financial statements have been prepared by us in accordance with generally accepted accounting principles in the United States ("United States" or "U.S.," and such accounting principles, "U.S. GAAP") for interim financial information, and include the accounts of SunPower, all of our subsidiaries and special purpose entities, as appropriate under U.S. GAAP. All intercompany transactions and balances have been eliminated in consolidation. The financial information included herein is unaudited, and reflects all adjustments which are, in the opinion of our management, of a normal recurring nature and necessary for a fair statement of the results for the periods presented. The January 3, 2021 consolidated balance sheet data was derived from SunPower’s audited consolidated financial statements included in our Annual Report on Form 10-K for the fiscal year ended January 3, 2021, as filed with the Securities and Exchange Commission ("SEC") on February 22, 2021, but does not include all disclosures required by U.S. GAAP. The condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in SunPower's Annual Report on Form 10-K for the fiscal year ended January 3, 2021. The operating results for the three months ended April 4, 2021 are not necessarily indicative of the results that may be expected for fiscal year 2021, or for any other future period. We have a 52-to-53-week fiscal year that ends on the Sunday closest to December 31. Accordingly, every fifth or sixth year will be a 53-week fiscal year. The current fiscal year, fiscal 2021, is a 52-week fiscal year, while fiscal year 2020 was a 53-week fiscal year. The first quarter of fiscal 2021 ended on April 4, 2021, while the first quarter of fiscal 2020 ended on March 29, 2020. Management Estimates The preparation of the condensed consolidated financial statements in conformity with U.S. GAAP requires our management to make estimates and assumptions that affect the amounts reported in these condensed consolidated financial statements and accompanying notes. Significant estimates in these condensed consolidated financial statements include revenue recognition, specifically the nature and timing of satisfaction of performance obligations, standalone selling price of performance obligations, and variable consideration; credit losses, including estimating macroeconomic factors affecting historical recovery rate of receivables; inventory and project asset write-downs; long-lived asset impairment, specifically estimates for valuation assumptions including discount rates and future cash flows; fair value of investments, including equity investments for which we apply the fair value option and other financial instruments; valuation of contingencies such as accrued warranty; the incremental borrowing rate used in discounting of lease liabilities; the fair value of indemnities provided to customers and other parties; and income taxes and tax valuation allowances. Actual results could materially differ from those estimates. Summary of Selected Significant Accounting Policies Refer to our Annual Report on Form 10-K for the fiscal year ended January 3, 2021 for the full list of our significant accounting policies. Recently Adopted Accounting Pronouncements In December 2019, the FASB issued ASU 2019-12, Simplifying the Accounting for Income Taxes , which simplifies the accounting for income taxes, eliminates certain exceptions within ASC 740, Income Taxes , and clarifies certain aspects of the current guidance to promote consistency among reporting entities. Most amendments within the standard are required to be applied on a prospective basis, while certain amendments must be applied on a retrospective or modified retrospective basis. We adopted the ASU during the first quarter of fiscal 2021. The adoption did not have a material impact on our consolidated financial statements. In January 2021, the FASB issued ASU 2021-01, Reference Rate Reform (Topic 848): Scope . The ASU is an update to ASU 2020-04 issued by the FASB in March 2020 and is intended to clarify the scope of ASC 848 to include derivatives that are affected by a change in the interest rate used for margining, discounting, or contract price alignment that do not also reference LIBOR or another reference rate expected to be discontinued as a result of reference rate reform. This guidance is effective immediately upon issuance on January 7, 2021. We adopted the ASU during the first quarter of fiscal 2021. The adoption did not have any impact on our consolidated financial statements and related disclosures. Recent Accounting Pronouncements Not Yet Adopted In August 2020, the FASB issued ASU 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40)—Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity. The amendment reduces the number of accounting models used for convertible debt instruments and convertible preferred stock, which results in fewer embedded conversion features separately recognized from the host contracts. ASU 2020-06 is effective no later than the first quarter of fiscal 2022. Early adoption is permitted no earlier than the first quarter of fiscal 2021, and the ASU should be applied retrospectively. We are currently evaluating the impacts of the provisions of ASU 2020-06 on our financial statements and disclosures.

Transactions with Total and Tot

Transactions with Total and Total S.A.	3 Months Ended
	Apr. 04, 2021
Related Party Transactions [Abstract]
Transactions with Total and Total S.A.	TRANSACTIONS WITH TOTAL AND TOTAL SE In June 2011, Total completed a cash tender offer to acquire 60% of our then outstanding shares of common stock at a price of $23.25 per share, for a total cost of approximately $1.4 billion. In December 2011, we entered into a Private Placement Agreement with Total, under which Total purchased, and we issued and sold, 18.6 million shares of our common stock for a purchase price of $8.80 per share, thereby increasing Total's ownership to approximately 66% of our outstanding common stock as of that date. As of April 4, 2021, ownership of our outstanding common stock by Total SE and its affiliates was approximat ely 51%. Subsequent to the spin-off of Maxeon Solar, Total received a pro rata distribution of ordinary shares of Maxeon Solar, and its percentage ownership of shares in SunPower did not change. Supply Agreements In December 2019, we sold our membership interests in certain project companies to Total Strong, LLC., a joint venture between Total and Hannon Armstrong. During the three months ended April 4, 2021, we recognized revenue of $15.1 million for sales to this joint venture, for continued recognition of engineering, procurement and construction ("EPC") revenue during the quarter, which is included within "Solar power systems, components, and other" on our consolidated statements of operations. Affiliation Agreement We and Total have entered into an Affiliation Agreement that governs the relationship between Total and us (the "Affiliation Agreement"). Until the expiration of a standstill period specified in the Affiliation Agreement (the "Standstill Period"), and subject to certain exceptions, Total, Total SE, and any of their respective affiliates and certain other related parties (collectively, the "Total Group") may not effect, seek, or enter into discussions with any third party regarding any transaction that would result in the Total Group beneficially owning our shares in excess of certain thresholds, or request us or our independent directors, officers, or employees to amend or waive any of the standstill restrictions applicable to the Total Group. The Standstill Period ends when Total holds less than 15% ownership of us. The Affiliation Agreement imposes certain limitations on the Total Group's ability to seek to effect a tender offer or merger to acquire 100% of our outstanding voting power and imposes certain limitations on the Total Group's ability to transfer 40% or more of our outstanding shares or voting power to a single person or group that is not a direct or indirect subsidiary of Total SE. During the Standstill Period, no member of the Total Group may, among other things, solicit proxies or become a participant in an election contest relating to the election of directors to our board of directors. The Affiliation Agreement provides Total with the right to maintain its percentage ownership in connection with any new securities issued by us, and Total may also purchase shares on the open market or in private transactions with disinterested stockholders, subject in each case to certain restrictions. The Affiliation Agreement also imposes certain restrictions with respect to the ability of us and our board of directors to take certain actions, including specifying certain actions that require approval by the directors other than the directors appointed by Total and other actions that require stockholder approval by Total. Cooperation Agreement In December 2020, we entered into a strategic Cooperation Framework Agreement (the "Cooperation Agreement") with Total that governs the ongoing relationship between us and Total with respect to development and sale of certain future commercial solar power projects. The Cooperation Agreement lays the foundation for the potential to jointly develop certain projects and allows us and Total to expand investments in solar power projects to provide for future opportunities and investment volume. Among other things, the Cooperation Agreement provides for: • our obligation to offer and ability to sell certain projects to Total at pre-agreed model metrics; • our ability to obtain non-recourse financing of construction costs; • our ability to obtain financing of development costs as various milestones in the project development cycle are achieved; • exclusivity over our offering of various post-sale services for projects sold to Total or its affiliates; and • our right to offer EPC services on some downstream generation projects being developed by Total. The Cooperation Agreement will remain in effect until December 31, 2023, unless otherwise terminated. 0.875% Debentures Due 2021 In June 2014, we issued $400.0 million in principal amount of our 0.875% debentures due June 1, 2021. An aggregate principal amount of $250.0 million of the 0.875% debentures due 2021 was initially acquired by Total. Interest is payable semi-annually, beginning on December 1, 2014. The 0.875% debentures due 2021 are convertible into shares of our common stock at any time. When issued, the initial conversion rate in respect of the 0.875% debentures due 2021 was 20.5071 shares of common stock per $1,000 principal amount of 0.875% senior convertible debentures (which was equivalent to an initial conversion price of approximately $48.76 per share). After giving effect to the Spin-Off, effective September 1, 2020, the conversion rate was adjusted to 25.1388 shares of common stock per $1,000 principal amount of debentures (which is equivalent to a conversion price of approximately $39.78 per share). The applicable conversion rate may further adjust in certain circumstances, including a fundamental change, as described in the indenture governing the 0.875% debentures due 2021. If not earlier repurchased or converted, the 0.875% debentures due 2021 mature on June 1, 2021. During the fiscal year ended January 3, 2021, we purchased $337.4 million of aggregate principal amount of the 0.875% debentures due 2021, including $250.0 million of principal amount representing the entire amount held by Total, for cash proceeds of approximately $334.7 million, net. As of April 4, 2021, the outstanding principal amount of the 0.875% debentures due 2021 was $62.5 million, none of which was held by Total. 4.00% Debentures Due 2023 In December 2015, we issued $425.0 million in principal amount of our 4.00% debentures due 2023. An aggregate principal amount of $100.0 million of the 4.00% debentures due 2023 was acquired by Total. Interest is payable semi-annually, beginning on July 15, 2016. The 4.00% debentures due 2023 are convertible into shares of our common stock at any time. When issued, the initial conversion rate in respect of the 4.00% debentures due 2023 was 32.7568 shares of common stock per $1,000 principal amount of debentures (which was equivalent to an initial conversion price of approximately $30.53 per share). After giving effect to the Spin-Off, effective September 1, 2020, the conversion rate adjusted to 40.1552 shares of common stock per $1,000 principal amount of debentures (which is equivalent to a conversion price of approximately $24.90 per share), which provides Total the right to acquire up to 4,015,515 shares of our common stock. Notice of the conversion rate adjustment was delivered to Wells Fargo Bank, National Association, the trustee, in accordance with the terms of the indenture governing the 4.00% debentures due 2023. The applicable conversion rate may further adjust in certain circumstances, including a fundamental change, as described in the indenture governing the 4.00% debentures due 2023. If not earlier repurchased or converted, the 4.00% debentures due 2023 mature on January 15, 2023. Joint Solar Projects with Total and its Affiliates We enter into various EPC and operations and maintenance ("O&M") agreements relating to solar projects, including EPC and O&M services agreements relating to projects owned or partially owned by Total and its affiliates. As of April 4, 2021, we had $48.4 million of "Contract assets", $1.1 million of "Contract liabilities" and $0.2 million of "Accounts receivable, net" on our condensed consolidated balance sheets related to projects in which Total and its affiliates have a direct or indirect material interest. Related-Party Transactions with Total and its Affiliates: The following related-party balances and amounts are associated with transactions entered into with Total and its Affiliates. Refer to Note 9. Equity Investments for related-party transactions with unconsolidated entities in which we have a direct equity investment. As of (In thousands) April 4, 2021 January 3, 2021 Accounts receivable $ 226 $ 76 Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Revenue: Solar power systems, components, and other $ 15,105 $ 29,246 Cost of revenue: Solar power systems, components, and other 12,361 27,849 Other income Gain (loss) on early retirement of convertible debt — 1,850 Interest expense: Guarantee fees incurred under the Credit Support Agreement — 13 Interest expense incurred on the 0.875% debentures due 2021 — 404 Interest expense incurred on the 4.00% debentures due 2023 1,000 1,000 In connection with the Spin-Off, the Company entered into certain agreements with Maxeon Solar, including a transition services agreement, supply agreement, and product collaboration agreement. The below table summarizes the Company’s transactions with Maxeon Solar for the three months ended April 4, 2021: Three Months Ended (In thousands) April 4, 2021 Purchases of photovoltaic modules (recorded in cost of revenue) $ 58,154 Research and development expenses reimbursement received 9,373 Income from transition services agreement, net 3,087 The Company had the following balances related to transactions with Maxeon Solar as of April 4, 2021: (In thousands) April 4, 2021 Prepaid and other current assets $ 3,838 Accrued liabilities 7,527 Accounts payable 29,611

Revenue from Contracts with Cus

Revenue from Contracts with Customers	3 Months Ended
	Apr. 04, 2021
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	REVENUE FROM CONTRACTS WITH CUSTOMERS Disaggregation of Revenue The following tables represent disaggregated revenue from contracts with customers for the three months ended April 4, 2021, and March 29, 2020 along with the reportable segment for each category: Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Category Residential, Light Commercial Commercial and Industrial Solutions Others Total Residential, Light Commercial Commercial and Industrial Solutions Others Total Solar power systems sales and EPC services $ 232,777 $ 62,992 $ 1,587 $ 297,356 $ 221,915 $ 47,627 $ 676 $ 270,218 Operations and maintenance — 3,270 611 3,881 — 2,561 12,510 15,071 Residential leasing 1,120 — — 1,120 1,324 — — 1,324 Solar services 4,041 — — 4,041 3,509 424 — 3,933 Revenue $ 237,938 $ 66,262 $ 2,198 $ 306,398 $ 226,748 $ 50,612 $ 13,186 $ 290,546 We recognize revenue for sales of modules and components at the point that control transfers to the customer, which occurs upon shipment or delivery to the customer, depending on the terms of the contract, and we recognize revenue for operations and maintenance and solar services over the term of the service period. For EPC revenue and solar power systems sales, we commence recognizing revenue when control of the underlying system transfers to the customer and continue recognizing revenue over time as work is performed based on the ratio of costs incurred to date to the total estimated costs at completion of the performance obligations. For contracts in which we sell membership interests in certain project companies, we recognize revenue for the initial development and other solar assets at the point that control transfers to the customer, and we recognize continuing EPC revenue for work provided to the joint venture over time as work is performed. Our arrangements may contain clauses such as liquidated damages for delays or early performance bonus, most favorable pricing, or other provisions that can either increase or decrease the transaction price. These variable amounts generally are awarded upon achievement of certain performance metrics or milestones. Variable consideration is estimated at each measurement date at its most likely amount to the extent that it is probable that a significant reversal of cumulative revenue recognized will not occur and true-ups are applied prospectively as such estimates change. Judgment is required to evaluate assumptions including the amount of net contract revenues and the total estimated costs to determine our progress towards contract completion and to calculate the corresponding amount of revenue to recognize. If estimated total costs on any contract are greater than the net contract revenues, we recognize the entire estimated loss in the period the loss becomes known. For contracts with post-installation systems monitoring and maintenance, we recognize revenue related to systems monitoring and maintenance over the non-cancellable contract term on a straight-line basis. Changes in estimates for sales of systems for EPC services occur for a variety of reasons, including but not limited to (i) construction plan accelerations or delays, (ii) product cost forecast changes, (iii) change orders, or (iv) changes in other information used to estimate costs. Changes in estimates may have a material effect in our condensed consolidated statements of operations. The table below outlines the impact on revenue of net changes in estimated transaction prices and input costs for systems related sales contracts (both increases and decreases) for the three months ended April 4, 2021 and March 29, 2020 as well as the number of projects that comprise such changes. For purposes of the following table, only projects with changes in estimates that have an impact on revenue and or cost of at least $1.0 million, calculated on a quarterly basis during the periods, are presented. Also included in the table is the net change in estimate as a percentage of the aggregate revenue for such projects. Three Months Ended (In thousands, except number of projects) April 4, 2021 March 29, 2020 Increase (decrease) in revenue from net changes in transaction prices $ — $ — Increase (decrease) in revenue from net changes in input cost estimates — (1,133) Net decrease in revenue from net changes in estimates $ — $ (1,133) Number of projects — 1 Net change in estimate as a percentage of aggregate revenue for associated projects — % (1.1) % Contract Assets and Liabilities Contract assets consist of (i) retainage which represents the earned, but unbilled, portion of a construction and development project for which payment is deferred by the customer until certain contractual milestones are met; and (ii) unbilled receivables which represent revenue that has been recognized in advance of billing the customer, which is common for long-term construction contracts. Contract liabilities consist of deferred revenue and customer advances, which represent consideration received from a customer prior to transferring control of goods or services to the customer under the terms of a sales contract. Refer to Note 4. Balance Sheet Components for further details. During the three months ended April 4, 2021, the decrease in contract assets of $0.5 million was primarily driven by billings for commercial projects where certain milestones had been reached, as well as a decrease in management's estimate of variable consideration on power plant development projects and commercial projects sold in prior years. During the three months ended March 29, 2020, the decrease in contract assets of $35.7 million was primarily driven by billings for commercial projects where certain milestones had been reached as well as changes in estimates of variable consideration due for previous sales of certain power plant projects. During the three months ended April 4, 2021 and March 29, 2020, the decrease in contract liabilities of $13.5 million and $11.4 million, respectively, was primarily due to the attainment of milestones billings for a variety of projects. Three Months Ended (In thousands, except number of projects) April 4, 2021 January 3, 2021 Contract Assets 122,315 122,802 Contract Liabilities 89,133 102,594 During the three months ended April 4, 2021, we recognized revenue of $40.6 million that was included in contract liabilities as of January 3, 2021. During the three months ended March 29, 2020, we recognized revenue of $46.6 million that was included in contract liabilities as of December 29, 2019. The following table represents our remaining performance obligations as of April 4, 2021 for EPC agreements for projects that we are constructing or expect to construct. We expect to recognize $143.6 million of revenue upon transfer of control of the projects. Project Revenue Category EPC Contract/Partner Developed Project Expected Year Revenue Recognition Will Be Completed Average Percentage of Revenue Recognized Various Distribution Generation Projects Solar power systems sales and EPC services Various 2023 92.7 % As of April 4, 2021, we have entered into contracts with customers for sales of modules and components for an aggregate transaction price of $242.1 million, the substantial majority of which we expect to recognize over the next 12 months.

Balance Sheet Components

Balance Sheet Components	3 Months Ended
	Apr. 04, 2021
Balance Sheet Related Disclosures [Abstract]
Balance Sheet Components	BALANCE SHEET COMPONENTS Accounts Receivable, Net As of (In thousands) April 4, 2021 January 3, 2021 Accounts receivable, gross 1 $ 119,818 $ 124,402 Less: allowance for credit losses (14,846) (15,379) Less: allowance for sales returns (168) (159) Accounts receivable, net $ 104,804 $ 108,864 1 A lien of $59.2 million exists on our consolidated accounts receivable, gross, as of April 4, 2021 in connection with a Loan and Security Agreement entered into on March 29, 2019. See Note 10. Debt and Credit Sources. Allowance for Credit Losses Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Balance at beginning of period $ 15,379 $ 17,208 Provision for credit losses 295 1,968 Write-offs (828) — Balance at end of period $ 14,846 $ 19,176 Inventories As of (In thousands) April 4, 2021 January 3, 2021 Raw materials 1 $ 570 $ 2,630 Work-in-process 1 — 143 Finished goods 2 230,124 207,809 Inventories 3 4 $ 230,694 $ 210,582 1 Pertains to inventory at our manufacturing facility in Hillsboro, Oregon that was retained by the Company post Spin-Off and includes installation and other solar power system component materials. 2 Pertains to photovoltaic module, microinverters, inverters, battery storage and other balance of system materials. 3 A lien of $161.2 million exists on our gross inventory as of April 4, 2021 in connection with a Loan and Security Agreement entered into on March 29, 2019. See Note 10. Debt and Credit Sources. 4 Refer to long-term inventory for the safe harbor program under the caption "Other long-term assets." Prepaid Expenses and Other Current Assets As of (In thousands) April 4, 2021 January 3, 2021 Deferred project costs $ 26,870 $ 26,996 VAT receivables, current portion 1,252 1,174 Deferred costs for solar power systems 21,357 24,526 Other receivables 19,626 19,348 Prepaid taxes 67 205 Other 19,937 22,002 Prepaid expenses and other current assets $ 89,109 $ 94,251 Property, Plant and Equipment, Net As of (In thousands) April 4, 2021 January 3, 2021 Manufacturing equipment $ 17,972 $ 17,134 Leasehold improvements 29,257 29,385 Solar power systems 30,844 30,110 Computer equipment 49,738 49,935 Furniture and fixtures 7,855 7,899 Construction-in-process 6,132 3,080 Property, plant and equipment, gross 141,798 137,543 Less: accumulated depreciation (95,008) (90,777) Property, plant and equipment, net 1 $ 46,790 $ 46,766 1 Property, plant and equipment is predominantly located in the US. Other Long-term Assets As of (In thousands) April 4, 2021 January 3, 2021 Equity investments with readily determinable fair value $ 244,038 $ 614,148 Equity investments without readily determinable fair value 801 801 Equity investments with fair value option 9,924 9,924 Long-term inventory 1 15,245 27,085 Other 56,758 43,754 Other long-term assets $ 326,766 $ 695,712 1 Entire balance consists of finished goods under the safe harbor program. Refer to Note 9. Equity Investments for details. Accrued Liabilities As of (In thousands) April 4, 2021 January 3, 2021 Employee compensation and employee benefits $ 20,742 $ 23,312 Interest payable 3,953 8,796 Short-term warranty reserves 25,036 29,337 Restructuring reserve 4,532 2,808 Legal expenses 10,991 10,493 Taxes payable 23,056 25,968 Other 24,736 21,201 Accrued liabilities $ 113,046 $ 121,915 Other Long-term Liabilities As of (In thousands) April 4, 2021 January 3, 2021 Deferred revenue $ 35,604 $ 36,527 Long-term warranty reserves 47,235 52,540 Unrecognized tax benefits 12,492 12,584 Long-term pension liability 5,407 5,185 Long-term deferred tax liabilities 10,671 13,468 Other 41,534 37,293 Other long-term liabilities $ 152,943 $ 157,597 Accumulated Other Comprehensive Income As of (In thousands) April 4, 2021 January 3, 2021 Cumulative translation adjustment $ 9,633 $ 9,635 Net gain on long-term pension liability obligation (250) (250) Net gain on long-term derivative financial instrument (423) (570) Deferred taxes (63) (16) Accumulated other comprehensive income $ 8,897 $ 8,799

Solar Services

Solar Services	3 Months Ended
	Apr. 04, 2021
Leases [Abstract]
Solar Services	SOLAR SERVICESUpon adoption of ASC 842 on December 31, 2018, all arrangements under our residential lease program entered into on or after December 31, 2018 are accounted for as contracts with customers in accordance with ASC 606. The disclosure below relates to the residential lease arrangements entered into before December 31, 2018, which we continue to retain and are accounted for in accordance with the superseded lease accounting guidance. Operating Leases The following table summarizes "Solar power systems leased and to be leased, net" under operating leases on our condensed consolidated balance sheets as of April 4, 2021 and January 3, 2021: As of (In thousands) April 4, 2021 January 3, 2021 Solar power systems leased, net 1 : Solar power systems leased 115,206 $ 115,620 Less: accumulated depreciation and impairment (66,875) (65,219) Solar power systems leased, net $ 48,331 $ 50,401 1 Solar power systems leased, net, are physically located exclusively in the United States. The following table presents our minimum future rental receipts on operating leases placed in service as of April 4, 2021 : (In thousands) Fiscal 2021 Fiscal 2022 Fiscal 2023 Fiscal 2024 Fiscal 2025 Thereafter Total Minimum future rentals on operating leases placed in service 1 $ 43 $ 52 $ 52 $ 52 $ 53 $ 701 $ 953 1 Does not include contingent rentals that may be received from customers under agreements that include performance-based incentives.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Apr. 04, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the fair value measurement (observable inputs are the preferred basis of valuation): • Level 1 — Quoted prices in active markets for identical assets or liabilities. • Level 2 — Measurements are inputs that are observable for assets or liabilities, either directly or indirectly, other than quoted prices included within Level 1. • Level 3 — Prices or valuations that require management inputs that are both significant to the fair value measurement and unobservable. Assets and Liabilities Measured at Fair Value on a Recurring Basis We measure certain assets and liabilities at fair value on a recurring basis. There were no transfers between fair value measurement levels during any presented period. The following table summarizes our assets and liabilities measured and recorded at fair value on a recurring basis as of April 4, 2021 and January 3, 2021: April 4, 2021 January 3, 2021 (In thousands) Total Fair Value Level 3 Level 2 Level 1 Total Fair Value Level 3 Level 2 Level 1 Assets Other long-term assets: Equity investments with fair value option ("FVO") $ 9,924 $ 9,924 $ — $ — $ 9,924 $ 9,924 $ — $ — Equity investments with readily determinable fair value 569,418 — — 569,418 614,148 — — 614,148 Total assets $ 579,342 $ 9,924 $ — $ 569,418 $ 624,072 $ 9,924 $ — $ 614,148 Liabilities Other long-term liabilities: Interest rate swap contracts $ 452 $ — $ 452 $ — $ 600 $ — $ 600 $ — Total liabilities $ 452 $ — $ 452 $ — $ 600 $ — $ 600 $ — Equity investments with fair value option ("FVO") We have elected the fair value option in accordance with the guidance in ASC 825, Financial Instruments , for our investment in the SunStrong Capital Holdings, LLC ("SunStrong") joint venture and SunStrong Partners, LLC ("SunStrong Partners"), to mitigate volatility in reported earnings that results from the use of different measurement attributes (see Note 9). We initially computed the fair value for our investments consistent with the methodology and assumptions that market participants would use in their estimates of fair value with the assistance of a third-party valuation specialist. The fair value computation is updated using the same methodology on a quarterly basis considering material changes in the business of SunStrong or other inputs. The investments are classified within Level 3 in the fair value hierarchy because we estimate the fair value of the investments using the income approach based on the discounted cash flow method which considered estimated future financial performance, including assumptions for, among others, forecasted contractual lease income, lease expenses, residual value of these lease assets and long-term discount rates, and forecasted default rates over the lease term and discount rates, some of which require significant judgment by management and are not based on observable inputs. The following table summarizes movements in equity investments for the three months ended April 4, 2021. There were no internal movements to or from Level 3 from Level 1 or Level 2 for the three months ended April 4, 2021. (In thousands) Beginning balance as of January 3, 2021 Equity Distribution Additional Investment Ending balance as of April 4, 2021 Equity investments with FVO $9,924 $— $— $9,924 Level 3 significant unobservable inputs sensitivity The following table summarizes the significant unobservable inputs used in Level 3 valuation of our investments carried at fair value as of April 4, 2021. Included in the table are the inputs or range of possible inputs that have an effect on the overall valuation of the financial instruments. 2021 Assets: Fair value Valuation Technique Unobservable input Range (Weighted Average) Other long-term assets: Equity investments $ 9,924 Discounted cash flows Discount rate 12.5%-13% 1 7.5% 1 Total assets $ 9,924 1 The primary unobservable inputs used in the fair value measurement of our equity investments, when using a discounted cash flow model, are the discount rate and residual value. Significant increases (decreases) in the discount rate in isolation would result in a significantly lower (higher) fair value measurement. We estimate the discount rate based on risk appropriate projected cost of equity. We estimate the residual value based on the contracted systems in place in the years being projected. Significant increases (decreases) in the residual value in isolation would result in a significantly higher (lower) fair value measurement. Equity investments with readily determinable fair value In connection with the divestment of our microinverter business to Enphase Energy, Inc. ("Enphase") on August 9, 2018, we received 7.5 million shares of Enphase common stock (NASDAQ: ENPH). The common stock received was recorded as an equity investment with readily determinable fair value (Level 1), with changes in fair value recognized in net income in accordance with ASU 2016-01 Recognition and Measurement of Financial Assets and Liabilities . For the three months ended April 4, 2021 and March 29, 2020, we recorded loss of $44.7 million and gain of $47.9 million, respectively, within "other, net" in our condensed consolidated statement of operations. During the three months ended March 29, 2020 , we sold an additional one million shares of Enphase common stock in open market transactions for cash proceeds of $43.7 million. Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis We measure certain investments and non-financial assets (including property, plant and equipment, and other intangible assets) at fair value on a non-recurring basis in periods after initial measurement in circumstances when the fair value of such asset is impaired below its recorded cost. As of April 4, 2021 and January 3, 2021, there were no material items recorded at fair value on a non-recurring basis. Equity investments without readily determinable fair value

Restructuring

Restructuring	3 Months Ended
	Apr. 04, 2021
Restructuring and Related Activities [Abstract]
Restructuring	RESTRUCTURING January 2021 Restructuring Plan During the quarter ended April 4, 2021, we adopted a restructuring plan to realign and optimize workforce requirements concurrent with the planned closure of our manufacturing facility in Hillsboro, Oregon. In connection with the restructuring plan, which included actions to be implemented in the first quarter of 2021 and expected to be completed by the third quarter of 2021, we expected the majority of our approximately 170 primarily manufacturing employees to exit over a period of 3 to 6 months. Further, in connection with the closure, in April 2021, we signed agreements with two independent third parties to sell certain assets and liabilities, as well as, retain and engage some employees at the facility in providing R&D services. The proceeds for the assets and sale of R&D services, together with the assumption of certain liabilities, will reduce our previously anticipated restructuring charges. As of April 4, 2021, we had incurred cumulative costs of approximately $3.7 million in restructuring charges, primarily relating to the severance benefits. The majority of the remaining charges relating to the severance benefits are expected to be incurred in the second fiscal quarter of 2021, while a small portion may be incurred in 2022 through the end of the R&D services agreement. We expect to incur restructuring charges totaling approximately $7.0 million to $9.0 million, consisting primarily of severance benefits (between $4.0 million and $5.0 million) and real estate lease termination costs (between $3.0 million and $4.0 million). December 2019 Restructuring Plan During the fourth quarter of fiscal 2019, we adopted a restructuring plan to realign and optimize workforce requirements in light of changes to our business, including the Spin-Off of Maxeon Solar. In connection with the restructuring plan, which included actions implemented in the fourth quarter of 2019, we expected between 145 and 160 non-manufacturing employees, representing approximately 3% of our global workforce, to exit over a period of approximately 12 to 18 months. Between 65 and 70 of these employees were in our legacy SunPower Technologies business unit and corporate, most of whom exited our company following the Spin-Off, and the remainder of which exited upon completion of transition services. As the legacy SunPower Energy Services business unit refines its focus on distributed generation, storage, and energy services, 80 to 90 employees exited during the fourth fiscal quarter of 2019 and the first half of 2020. As of April 4, 2021, we had incurred cumulative costs of approximately $10.2 million in restructuring charges consisting primarily of severance and retention benefits and the Plan is substantially complete. The following table summarizes the comparative periods-to-date restructuring charges by plan recognized in our condensed consolidated statements of operations: Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Cumulative To Date January 2021 Restructuring Plan: Severance and benefits $ 3,671 $ — $ 3,671 Other costs 1 13 — 13 Total January 2021 Restructuring Plan 3,684 — 3,684 December 2019 Restructuring Plan: Severance and benefits (28) 1,639 10,005 Other costs 1 112 — 159 Total December 2019 Restructuring Plan 84 1,639 10,164 Other Legacy Restructuring Plans (2) (63) 68,640 Total restructuring charges (credits) $ 3,766 $ 1,576 $ 82,488 1 Other costs primarily represented associated legal and advisory services and costs of relocating employees. The following table summarizes the restructuring reserve activities during the three months ended April 4, 2021: Three Months Ended (In thousands) January 3, 2021 Charges (Benefits) (Payments) Recoveries April 4, 2021 January 2021 Restructuring Plan: Severance and benefits $ — $ 3,671 $ (34) $ 3,637 Other costs 1 — 13 (13) — Total January 2021 Restructuring Plan — 3,684 (47) 3,637 December 2019 Restructuring Plan: Severance and benefits 2,608 (28) (1,815) 765 Other costs 1 — 112 (112) — Total December 2019 Restructuring Plan 2,608 84 (1,927) 765 Other Legacy Restructuring Plans 200 (2) (68) 130 Total restructuring reserve activities $ 2,808 $ 3,766 $ (2,042) $ 4,532 1 Other costs primarily represented associated legal and advisory services and costs of relocating employees.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Apr. 04, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES Facility and Equipment Leases We lease certain facilities under non-cancellable operating leases from third parties. We also lease certain buildings under non-cancellable finance leases. Operating leases are subject to renewal options for periods ranging from 1 year to 10 years. We have disclosed quantitative information related to the lease contracts we have entered into as a lessee by aggregating the information based on the nature of asset such that the assets of similar characteristics and lease terms are shown within one single financial statement line item. The table below presents the summarized quantitative information with regard to lease contracts we have entered into: Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Operating leases: Operating lease expense $ 3,714 $ 3,418 Sublease income (106) (35) Rent expense $ 3,608 $ 3,383 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows for operating leases 1 $ 4,163 $ 3,309 Right-of-use assets obtained in exchange for leases 1 $ 11,528 $ 12,461 Weighted-average remaining lease term (in years) - operating leases 8.0 7.0 Weighted-average discount rate - operating leases 8.8 % 9 % 1 Amounts for the three months ended April 4, 2021 and March 29, 2020 include consolidated balances, including discontinued operations. The future minimum lease payments to be paid under non-cancellable leases in effect at April 4, 2021, are as follows (in thousands): As of April 4, 2021 Operating Leases 2021 $ 13,375 2022 15,090 2023 12,289 2024 8,426 2025 4,758 Thereafter 26,098 Total lease payments 80,036 Less: imputed interest (24,167) Total $ 55,869 As of April 4, 2021, we have two additional operating leases that have not yet commenced with future minimum lease payments amounting t o $24.7 million. These operating leases will have a lease term of 16 years after their commencement. Purchase Commitments Future purchase obligations under non-cancellable purchase orders and long-term supply agreements as o f April 4, 2021 are as follows: (In thousands) Fiscal 2021 Fiscal 2022 Fiscal 2023 Fiscal 2024 Fiscal 2025 Thereafter Total 1 Future purchase obligations $ 207,960 $ 108,401 $ 33,148 $ 1,710 $ 775 $ 5,307 $ 357,301 1 Total future purchase obligations were composed of $33.5 million related to non-cancellable purchase orders and $323.8 million related to long-term supply agreements. The future purchase obligations presented above primarily consist of commitments to purchase photovoltaic modules pursuant to the supply agreement with Maxeon Solar entered into on August 26, 2020, as amended, as well as commitments to purchase Module-Level Power Electronics ("MLPE") supplied by one vendor. The terms of all our long-term supply agreements are reviewed annually by us and we assess the need for any accruals for estimated losses on adverse purchase commitments, such as lower of cost or net realizable value adjustments that will not be recovered by future sales prices, forfeiture of advanced deposits and liquidated damages, as necessary. Product Warranties The following table summarizes accrued warranty activities for the three months ended April 4, 2021 and March 29, 2020: Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Balance at the beginning of the period $ 81,877 $ 101,380 Accruals for warranties issued during the period 9,484 6,526 Settlements and adjustments during the period (19,090) (8,354) Balance at the end of the period $ 72,271 $ 99,552 In some cases, we may offer customers the option to purchase extended warranties to ensure protection beyond the standard warranty period. In those circumstances, the warranty is considered a distinct service and we account for the extended warranty as a performance obligation and allocate a portion of the transaction price to that performance obligation. More frequently, customers do not purchase a warranty separately. In those situations, we account for the warranty as an assurance-type warranty, which provides customers with assurance that the product complies with agreed-upon specifications, and this does not represent a separate performance obligation. Such warranties are recorded separately as liabilities and presented within "accrued liabilities" and "other long-term liabilities" on our condensed consolidated balance sheets (see Note 4. Balance Sheet Components ). Project Agreements with Customers Project agreements entered into with our commercial and power plant customers often require us to undertake obligations including: (i) system output performance warranties, (ii) penalty payments or customer termination rights if the system we are constructing is not commissioned within specified time frames or other milestones are not achieved, and (iii) system put rights whereby we could be required to buy back a customer's system at fair value on specified future dates if certain minimum performance thresholds are not met for specified periods. Historically, our systems have performed significantly above their performance warranty thresholds, and there have been no cases in which we have had to buy back a system. As of April 4, 2021 and January 3, 2021, we had $8.3 million and $9.1 million, respectively, classified as "accrued liabilities," and $2.8 million and $3.1 million, respectively, classified as "other long-term liabilities" on our condensed consolidated balance sheets for such obligations. Liabilities Associated with Uncertain Tax Positions Total liabilities associated with uncertain tax positions were $12.5 million and $12.6 million as of April 4, 2021 and January 3, 2021, respectively. These amounts are included within "other long-term liabilities" on our condensed consolidated balance sheets in their respective periods as they are not expected to be paid within the next 12 months. Due to the complexity and uncertainty associated with our tax positions, we cannot make a reasonably reliable estimate of the period in which cash settlement, if any, would be made for our liabilities associated with uncertain tax positions in Other long-term liabilities. Indemnifications We are a party to a variety of agreements under which we may be obligated to indemnify the counterparty with respect to certain matters. Typically, these obligations arise in connection with contracts and license agreements or the sale of assets, under which we customarily agree to hold the other party harmless against losses arising from a breach of warranties, representations and covenants related to such matters as title to assets sold, negligent acts, damage to property, validity of certain intellectual property rights, non-infringement of third-party rights, and certain tax-related matters including indemnification to customers under Section 48(c) of the Internal Revenue Code of 1986, as amended, regarding solar commercial investment tax credits ("ITCs") and U.S. Treasury Department ("U.S. Treasury") cash grant payments under Section 1603 of the American Recovery and Reinvestment Act (each a "Cash Grant"). Further, in connection with our sale of residential lease assets in fiscal 2018 to SunStrong, we provide Hannon Armstrong indemnification related to cash flow losses arising from a recapture of California property taxes on account of a change in ownership, recapture of federal tax attributes and cash flow losses from leases that do not generate the promised savings to homeowners. The maximum exposure to loss arising from the indemnification for SunStrong is limited to the consideration received for the solar power systems. In each of these circumstances, payment by us is typically subject to the other party making a claim to us that is contemplated by and valid under the indemnification provisions of the particular contract, which provisions are typically contract-specific, as well as bringing the claim under the procedures specified in the particular contract. These procedures usually allow us to challenge the other party's claims or, in case of breach of intellectual property representations or covenants, to control the defense or settlement of any third-party claims brought against the other party. Further, our obligations under these agreements may be limited in terms of activity (typically to replace or correct the products or terminate the agreement with a refund to the other party), duration or amount. In some instances, we may have recourse against third parties or insurance covering certain payments made by us. In certain circumstances, we are contractually obligated to compensate customers and investors for losses they may suffer as a result of reductions in benefits received under ITCs and U.S. Treasury Cash Grant programs. We apply for ITCs and Cash Grant incentives based on guidance provided by the Internal Revenue Service ("IRS") and the U.S. Treasury, which include assumptions regarding the fair value of the qualified solar power systems, among others. Certain of our development agreements, sale-leaseback arrangements, and financing arrangements with tax equity investors, incorporate assumptions regarding the future level of incentives to be received, which in some instances may be claimed directly by our customers and investors. Generally, such obligations would arise as a result of reductions to the value of the underlying solar power systems as assessed by the IRS. At each balance sheet date, we assess and recognize, when applicable, the potential exposure from these obligations based on all the information available at that time, including any audits undertaken by the IRS. The maximum potential future payments that we could have to make under this obligation would depend on the difference between the eligible basis claimed on the tax filing for the solar energy systems sold or transferred to indemnified parties and the values that the IRS may determine as the eligible basis for the systems for purposes of claiming ITCs or Cash Grants. We use the eligible basis for tax filing purposes determined with the assistance of independent third-party appraisals to determine the ITCs that are passed-through to and claimed by the indemnified parties. We continue to retain certain indemnities, specifically, around ITCs and Cash Grants and California property taxes, even after the underlying portfolio of assets is sold to a third party. For contracts that have such indemnification provisions, we recognize a liability under ASC 460, "Guarantees," for the estimated premium that would be required by a guarantor to issue the same guarantee in a standalone arm’s-length transaction with an unrelated party. We recognize such liabilities at the greater of the fair value of the indemnity or the contingent liability required to be recognized under ASC 450, "Contingencies." We initially estimate the fair value of any such indemnities provided based on the cost of insurance policies that cover the underlying risks being indemnified and may purchase such policies to mitigate our exposure to potential indemnification payments. After an indemnification liability is recorded, we derecognize such amount typically upon expiration or settlement of the arrangement. As of April 4, 2021, and January 3, 2021, our provision was $9.7 million and $9.4 million primarily for tax-related indemnifications. SunPower is party to various supply agreements (collectively, the “Hemlock Agreements”) with Hemlock Semiconductor Operations LLC (f/k/a Hemlock Semiconductor Corporation) and its affiliate, Hemlock Semiconductor, LLC, for the procurement of polysilicon. In connection with the Spin-Off, SunPower and Maxeon Solar entered into an agreement pursuant to which Maxeon Solar has received SunPower’s rights under the Hemlock Agreements (including SunPower’s deposits and advanced payments thereunder) and, in return, Maxeon Solar has agreed to perform all of SunPower’s existing and future obligations under the Hemlock Agreements (including all take-or-pay obligations). While, as we remain a party to the Hemlock Agreements, we may contractually be liable to the vendor in case of non-payment by Maxeon Solar, we do not believe we have any current or future net exposure under the Hemlock Agreements as of the end of quarter ended April 4, 2021. Maxeon Solar's remaining obligations under this contract amount to $90.9 million and $125.8 million, for the remainder of fiscal 2021 and fiscal 2022, respectively. Pursuant to the Separation and Distribution Agreement entered into by us and Maxeon Solar, we also agreed to indemnify Maxeon Solar for any liabilities arising out of certain existing litigation relating to businesses contributed to Maxeon Solar in connection with the Spin-Off. We expect to be actively involved in managing this litigation together with Maxeon Solar. The indemnity qualifies for the criteria for accounting under the guidance in ASC 460 and we have recorded the liability of litigation of $4.5 million equal to the fair value of the guarantee provided as of the period ended April 4, 2021. Legal Matters We are a party to various litigation matters and claims that arise from time to time in the ordinary course of our business. While we believe that the ultimate outcome of such matters will not have a material adverse effect on us, their outcomes are not determinable and negative outcomes may adversely affect our financial position, liquidity, or results of operations.

Equity Investments

Equity Investments	3 Months Ended
	Apr. 04, 2021
Equity Method Investments and Joint Ventures [Abstract]
Equity Investments	EQUITY INVESTMENTSOur equity investments consist of equity investments with readily determinable fair value, investments without readily determinable fair value, equity investments accounted for using the fair value option, and equity method investments. Our share of earnings (losses) from equity investments accounted for under the equity method is reflected as "Equity in earnings (losses) of unconsolidated investees" in our condensed consolidated statements of operations. Mark-to-market gains and losses on equity investments are reflected as "other, net" under other income (expense), net in our condensed consolidated statements of operations. The carrying value of our equity investments, classified as "other long-term assets" on our condensed consolidated balance sheets, are as follows: As of (In thousands) April 4, 2021 January 3, 2021 Equity investments with readily determinable fair value: Enphase Energy, Inc. $ 569,418 $ 614,148 Total equity investments with readily determinable fair value 1 569,418 614,148 Equity investments without readily determinable fair value: Project entities 122 122 Other equity investments without readily determinable fair value 679 679 Total equity investments without readily determinable fair value 801 801 Equity investments with fair value option: SunStrong Capital Holdings, LLC 7,645 7,645 SunStrong Partners, LLC 2,279 2,279 Total equity investment with fair value option 9,924 9,924 Total equity investments $ 580,143 $ 624,873 1 As of April 4, 2021, two million shares of Enphase common stock have been reclassified from long-term to current assets as short-term investments. Variable Interest Entities ("VIEs") A VIE is an entity that has either (i) insufficient equity to permit the entity to finance its activities without additional subordinated financial support, or (ii) equity investors who lack the characteristics of a controlling financial interest. We follow guidance on the consolidation of VIEs that requires companies to utilize a qualitative approach to determine whether it is the primary beneficiary of a VIE. The process for identifying the primary beneficiary of a VIE requires consideration of the factors that indicate a party has the power to direct activities that most significantly impact the investees' economic performance, including powers granted to the investees' governing board and, to a certain extent, a company's economic interest in the investee. We analyze our investments in VIEs and classify them as either unconsolidated VIEs or consolidated VIEs ( Refer to our Form 10K for the fiscal year ended January 3, 2021 for further details on our various VIE arrangements ). Unconsolidated VIEs We have elected the FVO in accordance with the guidance in ASC 825, Financial Instruments , for our investments in SunStrong, SunStrong Partners, and 8point3 Holdings, our unconsolidated VIEs. Refer to Note 6. Fair Value Measurements . Summarized Financial Information of Unconsolidated VIEs The following table presents summarized financial statements for SunStrong, a significant investee, based on unaudited information provided to us by the investee: 1 Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Summarized statements of operations information: Revenue $ 33,097 $ 29,464 Gross income (loss) 1,214 (1,438) Net (loss) income (45,789) 21,640 As of (In thousands) April 4, 2021 January 3, 2021 Summarized balance sheet information: Current assets $ 92,493 $ 93,752 Long-term assets 1,439,119 1,378,382 Current liabilities 47,859 48,126 Long-term liabilities 1,168,705 1,130,484 1 Note that amounts are reported one quarter in arrears as permitted by applicable guidance. Related-Party Transactions with Investees Related-party transactions with SunStrong and SunStrong Partners are as follows: As of (In thousands) April 4, 2021 January 3, 2021 Accounts receivable $ 18,313 $ 16,767 Other long-term assets 11,000 — Accrued liabilities 216 7,996 Contract liabilities 22,844 27,426 Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Revenues and fees received from investees for products/services 49,647 55,935 Consolidated VIEs For Solar Sail LLC ("Solar Sail") and Solar Sail Commercial Holdings, LLC ("Solar Sail Commercial"), joint ventures with Hannon Armstrong Sustainable Infrastructure Capital, Inc. (“Hannon Armstrong”), our consolidated VIEs, total revenue was $3.6 million and $0.7 million for the three months ended April 4, 2021 and March 29, 2020 , respectively.

Debt and Credit Sources

Debt and Credit Sources	3 Months Ended
	Apr. 04, 2021
Debt Disclosure [Abstract]
Debt and Credit Sources	DEBT AND CREDIT SOURCES The following table summarizes our outstanding debt on our condensed consolidated balance sheets: April 4, 2021 January 3, 2021 (In thousands) Face Value Short-term Long-term Total Face Value Short-term Long-term Total Convertible debt: 0.875% debentures due 2021 $ 62,484 $ 62,456 $ — $ 62,456 $ 62,634 $ 62,531 $ — $ 62,531 4.00% debentures due 2023 424,995 — 422,749 422,749 425,000 — 422,443 422,443 CEDA loan 30,000 29,616 — 29,616 30,000 — 29,219 29,219 Non-recourse financing and other debt 153,195 65,108 86,456 151,564 126,283 97,059 27,228 124,287 $ 670,674 $ 157,180 $ 509,205 $ 666,385 $ 643,917 $ 159,590 $ 478,890 $ 638,480 As of April 4, 2021, the aggregate future contractual maturities of our outstanding debt, at face value, were as follows: (In thousands) Fiscal 2021 (remaining nine months) Fiscal 2022 Fiscal 2023 Fiscal 2024 Fiscal 2025 Thereafter Total Aggregate future maturities of outstanding debt $ 126,417 $ 13,153 $ 425,729 $ 69,833 $ 817 $ 32,402 $ 668,351 Convertible Debt The following table summarizes our outstanding convertible debt: April 4, 2021 January 3, 2021 (In thousands) Carrying Value Face Value Fair Value 1 Carrying Value Face Value Fair Value 1 Convertible debt: 0.875% debentures due 2021 $ 62,456 $ 62,484 $ 64,065 $ 62,531 $ 62,634 $ 64,018 4.00% debentures due 2023 422,749 424,995 652,750 422,443 425,000 549,398 $ 485,205 $ 487,479 $ 716,815 $ 484,974 $ 487,634 $ 613,416 1 The fair value of the convertible debt was determined using Level 2 inputs based on quarterly market prices as reported by an independent pricing source. Our outstanding convertible debentures are senior, unsecured obligations ranking equally with all of our existing and future senior unsecured indebtedness. Loan Agreement with California Enterprise Development Authority ("CEDA") In 2010, we borrowed the proceeds of the $30.0 million aggregate principal amount of CEDA's tax-exempt Recovery Zone Facility Revenue Bonds (SunPower Corporation - Headquarters Project) Series 2010 (the "Bonds") maturing April 1, 2031 under a loan agreement with CEDA. The Bonds mature on April 1, 2031 and bear interest at a fixed rate of 8.50% through maturity, and include customary covenants and other restrictions on us. As per the terms of the agreement, the bonds were subject to a 'make-whole' provision, wherein if retired prior to April 1, 2021, the Company has to 'make-whole' the bond holders for the full amount of unpaid interest through the term of the loan. After the make-whole provision expired in April 2021, the bonds can be retired any time at par value. As of April 4, 2021, the fair value of the Bonds was $30.1 million, determined by using Level 2 inputs based on quarterly market prices as reported by an independent pricing source. On April 15, 2021, we repaid the outstanding principal amount of our $30.0 million loan with CEDA. Non-recourse Financing and Other Debt In order to facilitate the construction, sale, or ongoing operation of certain solar projects, including our commercial projects, we regularly obtain project-level financing. These financings are secured either by the assets of the specific project being financed or by our equity in the relevant project entity and the lenders do not have recourse to our general assets for repayment of such debt obligations, and hence the financings are referred to as non-recourse. Non-recourse financing is typically in the form of loans from third-party financial institutions, but also takes other forms, including partnership flip structures, sale-leaseback arrangements, or other forms commonly used in the solar or similar industries. We may seek non-recourse financing covering solely the construction period of the solar project or may also seek financing covering part or all of the operating life of the solar project. We classify non-recourse financings on our consolidated balance sheets in accordance with their terms; however, in certain circumstances, we may repay or refinance these financings prior to stated maturity dates in connection with the sale of the related project or similar such circumstances. As of April 4, 2021, we had $151.5 million outstanding under these financings. We also enter other debt arrangements to finance operations. The following presents a summary of these non-recourse financing and other debt arrangements: Aggregate Carrying Value 1 (In thousands) April 4, 2021 January 3, 2021 Balance Sheet Classification PNC Energy Capital loan 2 $ 5,478 $ 5,545 Short-term debt and Long-term debt Asset-Backed Loan 68,977 32,690 Short-term debt and Long-term debt Safe Harbor 74,243 75,910 Short-term debt and Long-term debt Other debt 2,845 560 Short-term debt and Long-term debt Various construction project debt 3 — 9,583 Short-term debt 1 Based on the nature of the debt arrangements included in the table above, and our intention to fully repay or transfer the obligations at their face values plus any applicable interest, we believe their carrying value materially approximates fair value, which is categorized within Level 3 of the fair value hierarchy. 2 In fiscal 2013, we entered into a financing agreement with PNC Energy Capital, LLC to finance our construction projects. Interest is calculated at a per annum rate equal to LIBOR plus 4.13%. 3 In the fourth quarter of fiscal 2019 and throughout fiscal 2020, we entered into various financing agreements with Fifth Third Bank, National Association, to finance our construction projects. The amount borrowed is non-recourse in nature and cannot exceed the total costs of the project. Each draw bears interest on the unpaid amount at a per annum rate equal to LIBOR. The loan matures at the earliest of 85 days after the project is placed in service; 9 months after the initial borrowing date; or the first anniversary of satisfaction of the closing conditions set forth by the Lenders, including the delivery of the signed loan agreement by the borrower Asset-Backed Loan with Bank of America

Related Party Transactions

Related Party Transactions	3 Months Ended
	Apr. 04, 2021
Related Party Transactions [Abstract]
Related Party Transactions	TRANSACTIONS WITH TOTAL AND TOTAL SE In June 2011, Total completed a cash tender offer to acquire 60% of our then outstanding shares of common stock at a price of $23.25 per share, for a total cost of approximately $1.4 billion. In December 2011, we entered into a Private Placement Agreement with Total, under which Total purchased, and we issued and sold, 18.6 million shares of our common stock for a purchase price of $8.80 per share, thereby increasing Total's ownership to approximately 66% of our outstanding common stock as of that date. As of April 4, 2021, ownership of our outstanding common stock by Total SE and its affiliates was approximat ely 51%. Subsequent to the spin-off of Maxeon Solar, Total received a pro rata distribution of ordinary shares of Maxeon Solar, and its percentage ownership of shares in SunPower did not change. Supply Agreements In December 2019, we sold our membership interests in certain project companies to Total Strong, LLC., a joint venture between Total and Hannon Armstrong. During the three months ended April 4, 2021, we recognized revenue of $15.1 million for sales to this joint venture, for continued recognition of engineering, procurement and construction ("EPC") revenue during the quarter, which is included within "Solar power systems, components, and other" on our consolidated statements of operations. Affiliation Agreement We and Total have entered into an Affiliation Agreement that governs the relationship between Total and us (the "Affiliation Agreement"). Until the expiration of a standstill period specified in the Affiliation Agreement (the "Standstill Period"), and subject to certain exceptions, Total, Total SE, and any of their respective affiliates and certain other related parties (collectively, the "Total Group") may not effect, seek, or enter into discussions with any third party regarding any transaction that would result in the Total Group beneficially owning our shares in excess of certain thresholds, or request us or our independent directors, officers, or employees to amend or waive any of the standstill restrictions applicable to the Total Group. The Standstill Period ends when Total holds less than 15% ownership of us. The Affiliation Agreement imposes certain limitations on the Total Group's ability to seek to effect a tender offer or merger to acquire 100% of our outstanding voting power and imposes certain limitations on the Total Group's ability to transfer 40% or more of our outstanding shares or voting power to a single person or group that is not a direct or indirect subsidiary of Total SE. During the Standstill Period, no member of the Total Group may, among other things, solicit proxies or become a participant in an election contest relating to the election of directors to our board of directors. The Affiliation Agreement provides Total with the right to maintain its percentage ownership in connection with any new securities issued by us, and Total may also purchase shares on the open market or in private transactions with disinterested stockholders, subject in each case to certain restrictions. The Affiliation Agreement also imposes certain restrictions with respect to the ability of us and our board of directors to take certain actions, including specifying certain actions that require approval by the directors other than the directors appointed by Total and other actions that require stockholder approval by Total. Cooperation Agreement In December 2020, we entered into a strategic Cooperation Framework Agreement (the "Cooperation Agreement") with Total that governs the ongoing relationship between us and Total with respect to development and sale of certain future commercial solar power projects. The Cooperation Agreement lays the foundation for the potential to jointly develop certain projects and allows us and Total to expand investments in solar power projects to provide for future opportunities and investment volume. Among other things, the Cooperation Agreement provides for: • our obligation to offer and ability to sell certain projects to Total at pre-agreed model metrics; • our ability to obtain non-recourse financing of construction costs; • our ability to obtain financing of development costs as various milestones in the project development cycle are achieved; • exclusivity over our offering of various post-sale services for projects sold to Total or its affiliates; and • our right to offer EPC services on some downstream generation projects being developed by Total. The Cooperation Agreement will remain in effect until December 31, 2023, unless otherwise terminated. 0.875% Debentures Due 2021 In June 2014, we issued $400.0 million in principal amount of our 0.875% debentures due June 1, 2021. An aggregate principal amount of $250.0 million of the 0.875% debentures due 2021 was initially acquired by Total. Interest is payable semi-annually, beginning on December 1, 2014. The 0.875% debentures due 2021 are convertible into shares of our common stock at any time. When issued, the initial conversion rate in respect of the 0.875% debentures due 2021 was 20.5071 shares of common stock per $1,000 principal amount of 0.875% senior convertible debentures (which was equivalent to an initial conversion price of approximately $48.76 per share). After giving effect to the Spin-Off, effective September 1, 2020, the conversion rate was adjusted to 25.1388 shares of common stock per $1,000 principal amount of debentures (which is equivalent to a conversion price of approximately $39.78 per share). The applicable conversion rate may further adjust in certain circumstances, including a fundamental change, as described in the indenture governing the 0.875% debentures due 2021. If not earlier repurchased or converted, the 0.875% debentures due 2021 mature on June 1, 2021. During the fiscal year ended January 3, 2021, we purchased $337.4 million of aggregate principal amount of the 0.875% debentures due 2021, including $250.0 million of principal amount representing the entire amount held by Total, for cash proceeds of approximately $334.7 million, net. As of April 4, 2021, the outstanding principal amount of the 0.875% debentures due 2021 was $62.5 million, none of which was held by Total. 4.00% Debentures Due 2023 In December 2015, we issued $425.0 million in principal amount of our 4.00% debentures due 2023. An aggregate principal amount of $100.0 million of the 4.00% debentures due 2023 was acquired by Total. Interest is payable semi-annually, beginning on July 15, 2016. The 4.00% debentures due 2023 are convertible into shares of our common stock at any time. When issued, the initial conversion rate in respect of the 4.00% debentures due 2023 was 32.7568 shares of common stock per $1,000 principal amount of debentures (which was equivalent to an initial conversion price of approximately $30.53 per share). After giving effect to the Spin-Off, effective September 1, 2020, the conversion rate adjusted to 40.1552 shares of common stock per $1,000 principal amount of debentures (which is equivalent to a conversion price of approximately $24.90 per share), which provides Total the right to acquire up to 4,015,515 shares of our common stock. Notice of the conversion rate adjustment was delivered to Wells Fargo Bank, National Association, the trustee, in accordance with the terms of the indenture governing the 4.00% debentures due 2023. The applicable conversion rate may further adjust in certain circumstances, including a fundamental change, as described in the indenture governing the 4.00% debentures due 2023. If not earlier repurchased or converted, the 4.00% debentures due 2023 mature on January 15, 2023. Joint Solar Projects with Total and its Affiliates We enter into various EPC and operations and maintenance ("O&M") agreements relating to solar projects, including EPC and O&M services agreements relating to projects owned or partially owned by Total and its affiliates. As of April 4, 2021, we had $48.4 million of "Contract assets", $1.1 million of "Contract liabilities" and $0.2 million of "Accounts receivable, net" on our condensed consolidated balance sheets related to projects in which Total and its affiliates have a direct or indirect material interest. Related-Party Transactions with Total and its Affiliates: The following related-party balances and amounts are associated with transactions entered into with Total and its Affiliates. Refer to Note 9. Equity Investments for related-party transactions with unconsolidated entities in which we have a direct equity investment. As of (In thousands) April 4, 2021 January 3, 2021 Accounts receivable $ 226 $ 76 Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Revenue: Solar power systems, components, and other $ 15,105 $ 29,246 Cost of revenue: Solar power systems, components, and other 12,361 27,849 Other income Gain (loss) on early retirement of convertible debt — 1,850 Interest expense: Guarantee fees incurred under the Credit Support Agreement — 13 Interest expense incurred on the 0.875% debentures due 2021 — 404 Interest expense incurred on the 4.00% debentures due 2023 1,000 1,000 In connection with the Spin-Off, the Company entered into certain agreements with Maxeon Solar, including a transition services agreement, supply agreement, and product collaboration agreement. The below table summarizes the Company’s transactions with Maxeon Solar for the three months ended April 4, 2021: Three Months Ended (In thousands) April 4, 2021 Purchases of photovoltaic modules (recorded in cost of revenue) $ 58,154 Research and development expenses reimbursement received 9,373 Income from transition services agreement, net 3,087 The Company had the following balances related to transactions with Maxeon Solar as of April 4, 2021: (In thousands) April 4, 2021 Prepaid and other current assets $ 3,838 Accrued liabilities 7,527 Accounts payable 29,611

Income Taxes

Income Taxes	3 Months Ended
	Apr. 04, 2021
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES In the three months ended April 4, 2021, our income tax benefit of $5.2 million on a loss from continuing operations before income taxes and equity in earnings of unconsolidated investees of $54.7 million was primarily due to the current quarter windfall benefit from stock-based compensation deduction, and true-up of estimated state tax liability. Our income tax provision of $0.9 million in the three months ended March 29, 2020 on a profit from continuing operations before income taxes and equity in earnings of unconsolidated investees of $21.0 million was primarily due to tax expense in foreign jurisdictions unrelated to Maxeon Solar that were profitable. During the three months ended April 4, 2021, in accordance with FASB guidance for interim reporting of income tax, we have computed our provision for income taxes based on a projected annual effective tax rate. Our projected effective tax rate is based on forecasted annualized results which may fluctuate significantly in future periods, in particular due to the uncertainty in our annual forecasts resulting from the unpredictable duration and severity of the COVID-19 pandemic on our operating results. Total liabilities associated with uncertain tax positions were relatively unchanged at $12.5 million and $12.6 million as of April 4, 2021 and January 3, 2021, respectively. The adoption of ASU 2019-12, Simplifying the Accounting for Income Taxes , during the first quarter of fiscal 2021 did not have a material impact on our condensed consolidated financial statements.

Net Income (Loss) Per Share

Net Income (Loss) Per Share	3 Months Ended
	Apr. 04, 2021
Earnings Per Share [Abstract]
Net Income (Loss) Per Share	NET INCOME (LOSS) PER SHARE We calculate basic net income (loss) per share by dividing earnings allocated to common stockholders by the basic weighted-average number of common shares outstanding for the period. Diluted weighted-average shares is computed by using the basic weighted-average number of common shares outstanding plus any potentially dilutive securities outstanding during the period using the treasury-stock method and the if-converted method, except when their effect is anti-dilutive. Potentially dilutive securities include restricted stock units and the outstanding senior convertible debentures. ASC 260 requires that companies use income from continuing operations as a "control number" or benchmark to determine whether potential common shares are dilutive or antidilutive. When calculating discontinued operations, we used the same number of potential common shares used in computing the diluted per-share amount of income from continuing operations in computing all other reported diluted per-share amounts, even if the effect will be antidilutive compared to their respective basic per-share amounts. The following table presents the calculation of basic and diluted net income (loss) per share attributable to stockholders: Three Months Ended (In thousands, except per share amounts) April 4, 2021 March 29, 2020 Basic net income (loss) per share: Numerator: Net (loss) income attributable to stockholders - continuing operations $ (48,385) $ 21,540 Net loss attributable to stockholders - discontinued operations — (22,971) Net loss attributable to stockholders $ (48,385) $ (1,431) Denominator: Basic weighted-average common shares 171,200 168,822 Basic net (loss) income per share - continuing operations $ (0.28) $ 0.13 Basic net loss per share - discontinued operations — (0.14) Basic net loss per share $ (0.28) $ (0.01) Diluted net income per share: Numerator: Net (loss) income attributable to stockholders - continuing operations $ (48,385) $ 21,540 Add: Interest expense on 0.875% debentures due 2021, net of tax — 505 Net (loss) income available to common stockholders - continuing operations (48,385) 22,045 Net loss available to common stockholders - discontinued operations $ — $ (22,971) Denominator: Basic weighted-average common shares 171,200 168,822 Effect of dilutive securities: Restricted stock units — 2,104 0.875% debentures due 2021 — 6,350 Dilutive weighted-average common shares: 171,200 177,277 Dilutive net (loss) income per share - continuing operations $ (0.28) $ 0.12 Dilutive net loss per share - discontinued operations — (0.13) Dilutive net loss per share $ (0.28) $ (0.01) The following is a summary of outstanding anti-dilutive potential common stock that was excluded from diluted net income per share attributable to stockholders in the following periods: Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Restricted stock units 876 3,343 0.875% debentures due 2021 1,575 — 4.00% debentures due 2023 17,068 13,922

Stock-Based Compensation

Stock-Based Compensation	3 Months Ended
	Apr. 04, 2021
Share-based Payment Arrangement [Abstract]
Stock-Based Compensation	STOCK-BASED COMPENSATION The following table summarizes the consolidated stock-based compensation expense by line item in our condensed consolidated statements of operations: Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Cost of revenue 1 $ 887 $ 644 Research and development 1 370 303 Sales, general, and administrative 1 3,756 4,031 Total stock-based compensation expense $ 5,013 $ 4,978

Segment and Geographical Inform

Segment and Geographical Information	3 Months Ended
	Apr. 04, 2021
Segment Reporting [Abstract]
Segment and Geographical Information	SEGMENT AND GEOGRAPHICAL INFORMATION Our Residential, Light Commercial ("RLC") refers to sales of solar energy solutions, including sales to our third-party dealer network and resellers, storage solutions, cash and loan sales and long-term leases directly to end customers. The Commercial and Industrial Solutions segment ("C&I Solutions") refers to direct sales of turn-key EPC services, and sales of energy under power purchase agreements ("PPAs"). Certain legacy businesses consisting of worldwide power plant project development and project sales which we are winding down, as well as U.S. manufacturing, are not significant to overall operations, and are deemed non-core to our other businesses and classified as "Others". Certain key cross-functional support functions and responsibilities including corporate strategy, treasury, tax and accounting support and services, among others, continue to be centrally managed within the Corporate function. Each segment is managed by a business general manager that reports to our Chief Executive Officer, as the chief operating decision maker (“CODM”), who reviews our business, manages resource allocations and measures performance of our activities between the RLC, C&I Solutions and Other segments. The CODM further views the business performance of each segment under two key sources of revenue - Dev Co and Power Co. Dev Co refers to our solar origination and installation revenue stream within each segment such as sale of solar power systems with our dealers and resellers network as well as installation and EPC revenues while Power Co refers to our post-system sale recurring services revenues, mainly from, asset management services and O&M services through our SunStrong partnership dealer services for RLC and our commercial dealer network for C&I Solutions. The risk profile of each revenue stream is different, and therefore, the segregation of Dev Co and Power Co provides the CODM with appropriate information to review business performance and allocate resources to each segment. Adjustments Made for Segment Purposes Adjustments Based on International Financial Reporting Standards (“IFRS”) Mark-to-market gain (loss) on equity investments We recognize adjustments related to the fair value of equity investments with readily determinable fair value based on the changes in the stock price of these equity investments at every reporting period. Under U.S. GAAP, mark-to-market gains and losses due to changes in stock prices for these securities are recorded in earnings while under IFRS, an election can be made to recognize such gains and losses in other comprehensive income. Such an election was made by Total SE. Further, we elected the FVO for some of our equity investments, and we adjust the carrying value of those investments based on their fair market value calculated periodically. Such option is not available under IFRS, and equity method accounting is required for those investments. Management believes that excluding these adjustments on equity investments is consistent with our internal reporting process as part of our status as a consolidated subsidiary of Total SE and better reflects our ongoing results. Other Adjustments Intersegment gross margin Our U.S. manufacturing operations that are part of the Others segment manufacture and sell solar modules to both operating segments, RLC and C&I Solutions, based on transfer prices determined based on management's assessment of market-based pricing terms. Such intersegment sales and related costs are eliminated at the corporate level to derive our condensed consolidated financial results. Gain (loss) on sale and impairment of residential lease assets In fiscal 2018 and 2019, in an effort to sell all the residential lease assets owned by us, we sold membership units representing a 49% membership interest in majority of its residential lease business and retained a 51% membership interest. We record an impairment charge based on the expected fair value for a portion of residential lease assets portfolio that was retained. Any charges or credits on these remaining unsold residential lease assets impairment, as well as its corresponding depreciation savings, are excluded from our non-GAAP results as they are not reflective of ongoing operating results. Stock-based compensation Stock-based compensation relates primarily to our equity incentive awards. Stock-based compensation is a non-cash expense that is dependent on market forces that are difficult to predict. We believe that this adjustment for stock-based compensation provides investors with a basis to measure our core performance, including the ability to compare our performance with the performance of other companies, without the period-to-period variability created by stock-based compensation. Transaction-related costs In connection with material transactions such as acquisition or divestiture of a business, we incur transaction costs including legal and accounting fees. We believe that it is appropriate to exclude these costs from our segment results as they would not have otherwise been incurred as part of our business operations and are therefore not reflective of ongoing operating results. Business reorganization costs In connection with the spin-off of Maxeon into an independent, publicly traded company, we incurred and expect to continue to incur in upcoming quarters, non-recurring charges on third-party legal and consulting expenses, primarily to enable in separation of shared information technology systems and applications. Management believes that it is appropriate to exclude these from company's non-GAAP results as it is not reflective of ongoing operating results. Restructuring charges We incur restructuring expenses related to reorganization plans aimed towards realigning resources consistent with our global strategy and improving our overall operating efficiency and cost structure. Although we have engaged in restructuring activities in the past, each has been a discrete event based on a unique set of business objectives. We believe that it is appropriate to exclude these from our non-GAAP results as they are not reflective of ongoing operating results. Results of operations of legacy business to be exited We exclude the first quarter 2021 results of operations of Hillsboro, Oregon facility from our non-GAAP results given that Hillsboro, Oregon facility ceased revenue generation in the first fiscal quarter of 2021 and all subsequent activities are focused on the wind-down of operations, pursuant to the previously announced closure of the operations. As such, they are not reflective of ongoing operating results. Litigation We may be involved in various instances of litigation, claims, and proceedings that result in payments or recoveries. We exclude gains or losses associated with such events because the gains or losses do not reflect our underlying financial results in the period incurred. We believe that it is appropriate to exclude these from our non-GAAP results as they are not reflective of ongoing operating results. Segment and Geographical Information The following tables present segment results for the three months ended April 4, 2021 for revenue, gross margin, and adjusted EBITDA, each as reviewed by the CODM, and their reconciliation to our condensed consolidated results under U.S. GAAP, as well as information about significant customers and revenue by geography based on the destination of the shipments, and property, plant and equipment, net by segment. Three Months Ended April 4, 2021 March 29, 2020 (In thousands): Residential, Light Commercial Commercial and Industrial Solutions Others Residential, Light Commercial Commercial and Industrial Solutions Others Revenue from external customers: Dev Co $ 231,422 $ 58,121 $ 966 $ 226,630 $ 46,748 $ 470 Power Co 6,515 8,142 611 5,510 3,863 12,510 Intersegment revenue — — (11) — — 19,879 Total segment revenue as reviewed by CODM $ 237,937 $ 66,263 $ 1,566 $ 232,140 $ 50,611 $ 32,859 Segment gross profit as reviewed by CODM $ 52,921 $ 4,211 $ (248) $ 33,505 $ (1,295) $ (9,455) Adjusted EBITDA $ 25,053 $ 576 $ (614) $ 9,236 $ (7,874) $ (8,909) Reconciliation of Segment Revenue to Condensed Consolidated GAAP Revenue Three Months Ended (In thousands): April 4, 2021 March 29, 2020 Total segment revenue as reviewed by CODM $ 305,766 $ 315,610 Adjustments to segment revenue: Intersegment elimination 11 (19,879) Legacy utility and power plant projects — 207 Construction revenue on solar services contracts — (5,392) Results of operations of legacy business to be exited 621 — Condensed consolidated GAAP revenue $ 306,398 $ 290,546 Reconciliation of Segment Gross Profit to Condensed Consolidated GAAP Gross Profit (Loss) Three Months Ended (In thousands): April 4, 2021 March 29, 2020 Segment gross profit $ 56,884 $ 22,755 Adjustments to segment gross profit: Intersegment elimination 449 13,044 Legacy utility and power plant projects — 34 Legacy sale-leaseback transactions — (20) Gain on sale and impairment of residential lease assets 494 448 Construction revenue on solar services contracts — (4,734) Stock-based compensation expense (887) (559) Amortization of intangible assets — (1,784) Results of operations of legacy business to be exited (7,066) — Condensed consolidated GAAP gross profit $ 49,874 $ 29,184 Reconciliation of Segments EBITDA to Loss before income taxes and equity in losses of unconsolidated investees Three Months Ended (In thousands): April 4, 2021 March 29, 2020 Segment adjusted EBITDA $ 25,015 $ (7,547) Adjustments to segment adjusted EBITDA: Legacy utility and power plant projects — 34 Legacy sale-leaseback transactions — (20) Mark-to-market loss on equity investment (44,730) — Unrealized loss on equity securities — 47,871 Gain (loss) on sale and impairment of residential lease assets 5,383 722 Construction revenue on solar services contracts — (4,734) Stock-based compensation expense (5,013) (4,978) Amortization of intangible assets — (1,786) Transaction-related costs (130) (480) Business reorganization costs (954) — Restructuring charges (3,766) (1,576) Results of operations of legacy business to be exited (7,066) — Litigation (5,210) (485) Gain on convertible debt repurchased — 2,956 Net loss attributable to noncontrolling interests (1,113) (1,379) Cash interest expense, net of interest income (7,914) (8,867) Depreciation and amortization (3,342) (3,500) Corporate (5,882) 4,815 Income (loss) before income taxes and equity in loss of unconsolidated investees $ (54,722) $ 21,046

Subsequent Events

Subsequent Events	3 Months Ended
	Apr. 04, 2021
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTS On April 15, 2021, we repaid the outstanding principal amount of $30.0 million, 8.5% fixed interest loan with CEDA. On April 19, 2021, we entered into an Amendment to the Affiliation Agreement, dated as of August 28, 2011, by and among the Company, Total Solar INTL SAS (formerly known as Total Gas & Power USA SAS), and Total Gaz Electricité Holdings France SAS (the "Affiliation Agreement Amendment"). The Affiliation Agreement Amendment provides for certain temporary adjustments to the composition of the Company's Board of Directors (the "Board") to accommodate Thomas H. Werner's continued service as Chairman of the Board through November 1, 2021 (or such earlier date as designated by the Board). Refer to the Form 8-K filed on April 20, 2021 for additional details. On April 19, 2021, the Board appointed Peter Faricy, the Company's new president and chief executive officer, as a Class III director, to serve until the Company's annual meeting of stockholders to be held in 2023. Also on April 19, 2021, the Board appointed Bernadette Baudier to serve as a Class II director, to serve until the Company's annual meeting of stockholders to be held in 2022. Ms. Baudier serves as a designee of Total pursuant to the Affiliation Agreement, as amended. Refer to the Form 8-K filed on April 20, 2021 for additional details.

Organization And Summary Of S_2

Organization And Summary Of Significant Accounting Policies (Policies)	3 Months Ended
	Apr. 04, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Principles of Consolidation	Principles of Consolidation The accompanying condensed consolidated financial statements have been prepared by us in accordance with generally accepted accounting principles in the United States ("United States" or "U.S.," and such accounting principles, "U.S. GAAP") for interim financial information, and include the accounts of SunPower, all of our subsidiaries and special purpose entities, as appropriate under U.S. GAAP. All intercompany transactions and balances have been eliminated in consolidation. The financial information included herein is unaudited, and reflects all adjustments which are, in the opinion of our management, of a normal recurring nature and necessary for a fair statement of the results for the periods presented. The January 3, 2021 consolidated balance sheet data was derived from SunPower’s audited consolidated financial statements included in our Annual Report on Form 10-K for the fiscal year ended January 3, 2021, as filed with the Securities and Exchange Commission ("SEC") on February 22, 2021, but does not include all disclosures required by U.S. GAAP. The condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto included in SunPower's Annual Report on Form 10-K for the fiscal year ended January 3, 2021. The operating results for the three months ended April 4, 2021 are not necessarily indicative of the results that may be expected for fiscal year 2021, or for any other future period.
Fiscal Periods	We have a 52-to-53-week fiscal year that ends on the Sunday closest to December 31. Accordingly, every fifth or sixth year will be a 53-week fiscal year. The current fiscal year, fiscal 2021, is a 52-week fiscal year, while fiscal year 2020 was a 53-week fiscal year. The first quarter of fiscal 2021 ended on April 4, 2021, while the first quarter of fiscal 2020 ended on March 29, 2020.
Management Estimates	Management Estimates The preparation of the condensed consolidated financial statements in conformity with U.S. GAAP requires our management to make estimates and assumptions that affect the amounts reported in these condensed consolidated financial statements and accompanying notes. Significant estimates in these condensed consolidated financial statements include revenue recognition, specifically the nature and timing of satisfaction of performance obligations, standalone selling price of performance obligations, and variable consideration; credit losses, including estimating macroeconomic factors affecting historical recovery rate of receivables; inventory and project asset write-downs; long-lived asset impairment, specifically estimates for valuation assumptions including discount rates and future cash flows; fair value of investments, including equity investments for which we apply the fair value option and other financial instruments; valuation of contingencies such as accrued warranty; the incremental borrowing rate used in discounting of lease liabilities; the fair value of indemnities provided to customers and other parties; and income taxes and tax valuation allowances. Actual results could materially differ from those estimates.
Recently Adopted Accounting Standards and Recent Accounting Pronouncements Not Yet Adopted	Recently Adopted Accounting Pronouncements In December 2019, the FASB issued ASU 2019-12, Simplifying the Accounting for Income Taxes , which simplifies the accounting for income taxes, eliminates certain exceptions within ASC 740, Income Taxes , and clarifies certain aspects of the current guidance to promote consistency among reporting entities. Most amendments within the standard are required to be applied on a prospective basis, while certain amendments must be applied on a retrospective or modified retrospective basis. We adopted the ASU during the first quarter of fiscal 2021. The adoption did not have a material impact on our consolidated financial statements. In January 2021, the FASB issued ASU 2021-01, Reference Rate Reform (Topic 848): Scope . The ASU is an update to ASU 2020-04 issued by the FASB in March 2020 and is intended to clarify the scope of ASC 848 to include derivatives that are affected by a change in the interest rate used for margining, discounting, or contract price alignment that do not also reference LIBOR or another reference rate expected to be discontinued as a result of reference rate reform. This guidance is effective immediately upon issuance on January 7, 2021. We adopted the ASU during the first quarter of fiscal 2021. The adoption did not have any impact on our consolidated financial statements and related disclosures. Recent Accounting Pronouncements Not Yet Adopted In August 2020, the FASB issued ASU 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40)—Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity. The amendment reduces the number of accounting models used for convertible debt instruments and convertible preferred stock, which results in fewer embedded conversion features separately recognized from the host contracts. ASU 2020-06 is effective no later than the first quarter of fiscal 2022. Early adoption is permitted no earlier than the first quarter of fiscal 2021, and the ASU should be applied retrospectively. We are currently evaluating the impacts of the provisions of ASU 2020-06 on our financial statements and disclosures.

Transactions with Total and T_2

Transactions with Total and Total S.A. (Tables)	3 Months Ended
	Apr. 04, 2021
Related Party Transactions [Abstract]
Schedule of Related Party Transactions	The following related-party balances and amounts are associated with transactions entered into with Total and its Affiliates. Refer to Note 9. Equity Investments for related-party transactions with unconsolidated entities in which we have a direct equity investment. As of (In thousands) April 4, 2021 January 3, 2021 Accounts receivable $ 226 $ 76 Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Revenue: Solar power systems, components, and other $ 15,105 $ 29,246 Cost of revenue: Solar power systems, components, and other 12,361 27,849 Other income Gain (loss) on early retirement of convertible debt — 1,850 Interest expense: Guarantee fees incurred under the Credit Support Agreement — 13 Interest expense incurred on the 0.875% debentures due 2021 — 404 Interest expense incurred on the 4.00% debentures due 2023 1,000 1,000 Related-party transactions with SunStrong and SunStrong Partners are as follows: As of (In thousands) April 4, 2021 January 3, 2021 Accounts receivable $ 18,313 $ 16,767 Other long-term assets 11,000 — Accrued liabilities 216 7,996 Contract liabilities 22,844 27,426 Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Revenues and fees received from investees for products/services 49,647 55,935 The below table summarizes the Company’s transactions with Maxeon Solar for the three months ended April 4, 2021: Three Months Ended (In thousands) April 4, 2021 Purchases of photovoltaic modules (recorded in cost of revenue) $ 58,154 Research and development expenses reimbursement received 9,373 Income from transition services agreement, net 3,087 The Company had the following balances related to transactions with Maxeon Solar as of April 4, 2021: (In thousands) April 4, 2021 Prepaid and other current assets $ 3,838 Accrued liabilities 7,527 Accounts payable 29,611

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	3 Months Ended
	Apr. 04, 2021
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following tables represent disaggregated revenue from contracts with customers for the three months ended April 4, 2021, and March 29, 2020 along with the reportable segment for each category: Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Category Residential, Light Commercial Commercial and Industrial Solutions Others Total Residential, Light Commercial Commercial and Industrial Solutions Others Total Solar power systems sales and EPC services $ 232,777 $ 62,992 $ 1,587 $ 297,356 $ 221,915 $ 47,627 $ 676 $ 270,218 Operations and maintenance — 3,270 611 3,881 — 2,561 12,510 15,071 Residential leasing 1,120 — — 1,120 1,324 — — 1,324 Solar services 4,041 — — 4,041 3,509 424 — 3,933 Revenue $ 237,938 $ 66,262 $ 2,198 $ 306,398 $ 226,748 $ 50,612 $ 13,186 $ 290,546
Changes in Estimates	Also included in the table is the net change in estimate as a percentage of the aggregate revenue for such projects. Three Months Ended (In thousands, except number of projects) April 4, 2021 March 29, 2020 Increase (decrease) in revenue from net changes in transaction prices $ — $ — Increase (decrease) in revenue from net changes in input cost estimates — (1,133) Net decrease in revenue from net changes in estimates $ — $ (1,133) Number of projects — 1 Net change in estimate as a percentage of aggregate revenue for associated projects — % (1.1) %
Contract with Customer, Contract Asset, Contract Liability, and Receivable	Three Months Ended (In thousands, except number of projects) April 4, 2021 January 3, 2021 Contract Assets 122,315 122,802 Contract Liabilities 89,133 102,594
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction	The following table represents our remaining performance obligations as of April 4, 2021 for EPC agreements for projects that we are constructing or expect to construct. We expect to recognize $143.6 million of revenue upon transfer of control of the projects. Project Revenue Category EPC Contract/Partner Developed Project Expected Year Revenue Recognition Will Be Completed Average Percentage of Revenue Recognized Various Distribution Generation Projects Solar power systems sales and EPC services Various 2023 92.7 %

Balance Sheet Components (Table

Balance Sheet Components (Tables)	3 Months Ended
	Apr. 04, 2021
Balance Sheet Related Disclosures [Abstract]
Schedule of Accounts Receivable	As of (In thousands) April 4, 2021 January 3, 2021 Accounts receivable, gross 1 $ 119,818 $ 124,402 Less: allowance for credit losses (14,846) (15,379) Less: allowance for sales returns (168) (159) Accounts receivable, net $ 104,804 $ 108,864 1 A lien of $59.2 million exists on our consolidated accounts receivable, gross, as of April 4, 2021 in connection with a Loan and Security Agreement entered into on March 29, 2019. See Note 10. Debt and Credit Sources.
Accounts Receivable, Allowance for Credit Loss	Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Balance at beginning of period $ 15,379 $ 17,208 Provision for credit losses 295 1,968 Write-offs (828) — Balance at end of period $ 14,846 $ 19,176
Schedule of Inventory	As of (In thousands) April 4, 2021 January 3, 2021 Raw materials 1 $ 570 $ 2,630 Work-in-process 1 — 143 Finished goods 2 230,124 207,809 Inventories 3 4 $ 230,694 $ 210,582 1 Pertains to inventory at our manufacturing facility in Hillsboro, Oregon that was retained by the Company post Spin-Off and includes installation and other solar power system component materials. 2 Pertains to photovoltaic module, microinverters, inverters, battery storage and other balance of system materials. 3 A lien of $161.2 million exists on our gross inventory as of April 4, 2021 in connection with a Loan and Security Agreement entered into on March 29, 2019. See Note 10. Debt and Credit Sources. 4 Refer to long-term inventory for the safe harbor program under the caption "Other long-term assets."
Schedule of Prepaid Expenses and Other Current Assets	As of (In thousands) April 4, 2021 January 3, 2021 Deferred project costs $ 26,870 $ 26,996 VAT receivables, current portion 1,252 1,174 Deferred costs for solar power systems 21,357 24,526 Other receivables 19,626 19,348 Prepaid taxes 67 205 Other 19,937 22,002 Prepaid expenses and other current assets $ 89,109 $ 94,251
Schedule of Property, Plant and Equipment	As of (In thousands) April 4, 2021 January 3, 2021 Manufacturing equipment $ 17,972 $ 17,134 Leasehold improvements 29,257 29,385 Solar power systems 30,844 30,110 Computer equipment 49,738 49,935 Furniture and fixtures 7,855 7,899 Construction-in-process 6,132 3,080 Property, plant and equipment, gross 141,798 137,543 Less: accumulated depreciation (95,008) (90,777) Property, plant and equipment, net 1 $ 46,790 $ 46,766
Schedule of Other Long-Term Assets	As of (In thousands) April 4, 2021 January 3, 2021 Equity investments with readily determinable fair value $ 244,038 $ 614,148 Equity investments without readily determinable fair value 801 801 Equity investments with fair value option 9,924 9,924 Long-term inventory 1 15,245 27,085 Other 56,758 43,754 Other long-term assets $ 326,766 $ 695,712 1 Entire balance consists of finished goods under the safe harbor program. Refer to Note 9. Equity Investments
Schedule of Accrued Liabilities	As of (In thousands) April 4, 2021 January 3, 2021 Employee compensation and employee benefits $ 20,742 $ 23,312 Interest payable 3,953 8,796 Short-term warranty reserves 25,036 29,337 Restructuring reserve 4,532 2,808 Legal expenses 10,991 10,493 Taxes payable 23,056 25,968 Other 24,736 21,201 Accrued liabilities $ 113,046 $ 121,915
Schedule of Other Long-Term Liabilities	As of (In thousands) April 4, 2021 January 3, 2021 Deferred revenue $ 35,604 $ 36,527 Long-term warranty reserves 47,235 52,540 Unrecognized tax benefits 12,492 12,584 Long-term pension liability 5,407 5,185 Long-term deferred tax liabilities 10,671 13,468 Other 41,534 37,293 Other long-term liabilities $ 152,943 $ 157,597
Schedule of Accumulated Other Comprehensive Loss	As of (In thousands) April 4, 2021 January 3, 2021 Cumulative translation adjustment $ 9,633 $ 9,635 Net gain on long-term pension liability obligation (250) (250) Net gain on long-term derivative financial instrument (423) (570) Deferred taxes (63) (16) Accumulated other comprehensive income $ 8,897 $ 8,799

Solar Services (Tables)

Solar Services (Tables)	3 Months Ended
	Apr. 04, 2021
Leases [Abstract]
Lessor Operating Leases	The following table summarizes "Solar power systems leased and to be leased, net" under operating leases on our condensed consolidated balance sheets as of April 4, 2021 and January 3, 2021: As of (In thousands) April 4, 2021 January 3, 2021 Solar power systems leased, net 1 : Solar power systems leased 115,206 $ 115,620 Less: accumulated depreciation and impairment (66,875) (65,219) Solar power systems leased, net $ 48,331 $ 50,401 1 Solar power systems leased, net, are physically located exclusively in the United States.
Schedule of Minimum Future Rental Receipts on Operating Leases Placed in Service	The following table presents our minimum future rental receipts on operating leases placed in service as of April 4, 2021 : (In thousands) Fiscal 2021 Fiscal 2022 Fiscal 2023 Fiscal 2024 Fiscal 2025 Thereafter Total Minimum future rentals on operating leases placed in service 1 $ 43 $ 52 $ 52 $ 52 $ 53 $ 701 $ 953 1 Does not include contingent rentals that may be received from customers under agreements that include performance-based incentives.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Apr. 04, 2021
Fair Value Disclosures [Abstract]
Summary of Assets and Liabilities Measured and Recorded at Fair Value on a Recurring Basis	The following table summarizes our assets and liabilities measured and recorded at fair value on a recurring basis as of April 4, 2021 and January 3, 2021: April 4, 2021 January 3, 2021 (In thousands) Total Fair Value Level 3 Level 2 Level 1 Total Fair Value Level 3 Level 2 Level 1 Assets Other long-term assets: Equity investments with fair value option ("FVO") $ 9,924 $ 9,924 $ — $ — $ 9,924 $ 9,924 $ — $ — Equity investments with readily determinable fair value 569,418 — — 569,418 614,148 — — 614,148 Total assets $ 579,342 $ 9,924 $ — $ 569,418 $ 624,072 $ 9,924 $ — $ 614,148 Liabilities Other long-term liabilities: Interest rate swap contracts $ 452 $ — $ 452 $ — $ 600 $ — $ 600 $ — Total liabilities $ 452 $ — $ 452 $ — $ 600 $ — $ 600 $ —
Equity Method Investment Movements	The following table summarizes movements in equity investments for the three months ended April 4, 2021. There were no internal movements to or from Level 3 from Level 1 or Level 2 for the three months ended April 4, 2021. (In thousands) Beginning balance as of January 3, 2021 Equity Distribution Additional Investment Ending balance as of April 4, 2021 Equity investments with FVO $9,924 $— $— $9,924
Level 3 significant unobservable input sensitivity	The following table summarizes the significant unobservable inputs used in Level 3 valuation of our investments carried at fair value as of April 4, 2021. Included in the table are the inputs or range of possible inputs that have an effect on the overall valuation of the financial instruments. 2021 Assets: Fair value Valuation Technique Unobservable input Range (Weighted Average) Other long-term assets: Equity investments $ 9,924 Discounted cash flows Discount rate 12.5%-13% 1 7.5% 1 Total assets $ 9,924 1

Restructuring (Tables)

Restructuring (Tables)	3 Months Ended
	Apr. 04, 2021
Restructuring and Related Activities [Abstract]
Schedule of Restructuring Charges	The following table summarizes the comparative periods-to-date restructuring charges by plan recognized in our condensed consolidated statements of operations: Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Cumulative To Date January 2021 Restructuring Plan: Severance and benefits $ 3,671 $ — $ 3,671 Other costs 1 13 — 13 Total January 2021 Restructuring Plan 3,684 — 3,684 December 2019 Restructuring Plan: Severance and benefits (28) 1,639 10,005 Other costs 1 112 — 159 Total December 2019 Restructuring Plan 84 1,639 10,164 Other Legacy Restructuring Plans (2) (63) 68,640 Total restructuring charges (credits) $ 3,766 $ 1,576 $ 82,488 1 Other costs primarily represented associated legal and advisory services and costs of relocating employees.
Schedule of Restructuring Reserve	The following table summarizes the restructuring reserve activities during the three months ended April 4, 2021: Three Months Ended (In thousands) January 3, 2021 Charges (Benefits) (Payments) Recoveries April 4, 2021 January 2021 Restructuring Plan: Severance and benefits $ — $ 3,671 $ (34) $ 3,637 Other costs 1 — 13 (13) — Total January 2021 Restructuring Plan — 3,684 (47) 3,637 December 2019 Restructuring Plan: Severance and benefits 2,608 (28) (1,815) 765 Other costs 1 — 112 (112) — Total December 2019 Restructuring Plan 2,608 84 (1,927) 765 Other Legacy Restructuring Plans 200 (2) (68) 130 Total restructuring reserve activities $ 2,808 $ 3,766 $ (2,042) $ 4,532 1 Other costs primarily represented associated legal and advisory services and costs of relocating employees.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Apr. 04, 2021
Commitments and Contingencies Disclosure [Abstract]
Lease, Cost	The table below presents the summarized quantitative information with regard to lease contracts we have entered into: Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Operating leases: Operating lease expense $ 3,714 $ 3,418 Sublease income (106) (35) Rent expense $ 3,608 $ 3,383 Cash paid for amounts included in the measurement of lease liabilities Operating cash flows for operating leases 1 $ 4,163 $ 3,309 Right-of-use assets obtained in exchange for leases 1 $ 11,528 $ 12,461 Weighted-average remaining lease term (in years) - operating leases 8.0 7.0 Weighted-average discount rate - operating leases 8.8 % 9 %
Schedule of Future Minimum Rental Payments for Operating Leases	The future minimum lease payments to be paid under non-cancellable leases in effect at April 4, 2021, are as follows (in thousands): As of April 4, 2021 Operating Leases 2021 $ 13,375 2022 15,090 2023 12,289 2024 8,426 2025 4,758 Thereafter 26,098 Total lease payments 80,036 Less: imputed interest (24,167) Total $ 55,869
Future Purchase Obligations	Future purchase obligations under non-cancellable purchase orders and long-term supply agreements as o f April 4, 2021 are as follows: (In thousands) Fiscal 2021 Fiscal 2022 Fiscal 2023 Fiscal 2024 Fiscal 2025 Thereafter Total 1 Future purchase obligations $ 207,960 $ 108,401 $ 33,148 $ 1,710 $ 775 $ 5,307 $ 357,301
Schedule of Product Warranty Liability	The following table summarizes accrued warranty activities for the three months ended April 4, 2021 and March 29, 2020: Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Balance at the beginning of the period $ 81,877 $ 101,380 Accruals for warranties issued during the period 9,484 6,526 Settlements and adjustments during the period (19,090) (8,354) Balance at the end of the period $ 72,271 $ 99,552

Equity Investments Equity Inves

Equity Investments Equity Investments (Tables)	3 Months Ended
	Apr. 04, 2021
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments	The carrying value of our equity investments, classified as "other long-term assets" on our condensed consolidated balance sheets, are as follows: As of (In thousands) April 4, 2021 January 3, 2021 Equity investments with readily determinable fair value: Enphase Energy, Inc. $ 569,418 $ 614,148 Total equity investments with readily determinable fair value 1 569,418 614,148 Equity investments without readily determinable fair value: Project entities 122 122 Other equity investments without readily determinable fair value 679 679 Total equity investments without readily determinable fair value 801 801 Equity investments with fair value option: SunStrong Capital Holdings, LLC 7,645 7,645 SunStrong Partners, LLC 2,279 2,279 Total equity investment with fair value option 9,924 9,924 Total equity investments $ 580,143 $ 624,873 1
Schedule of Other Ownership Interests	The following table presents summarized financial statements for SunStrong, a significant investee, based on unaudited information provided to us by the investee: 1 Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Summarized statements of operations information: Revenue $ 33,097 $ 29,464 Gross income (loss) 1,214 (1,438) Net (loss) income (45,789) 21,640 As of (In thousands) April 4, 2021 January 3, 2021 Summarized balance sheet information: Current assets $ 92,493 $ 93,752 Long-term assets 1,439,119 1,378,382 Current liabilities 47,859 48,126 Long-term liabilities 1,168,705 1,130,484 1 Note that amounts are reported one quarter in arrears as permitted by applicable guidance.
Schedule of Related Party Transactions	The following related-party balances and amounts are associated with transactions entered into with Total and its Affiliates. Refer to Note 9. Equity Investments for related-party transactions with unconsolidated entities in which we have a direct equity investment. As of (In thousands) April 4, 2021 January 3, 2021 Accounts receivable $ 226 $ 76 Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Revenue: Solar power systems, components, and other $ 15,105 $ 29,246 Cost of revenue: Solar power systems, components, and other 12,361 27,849 Other income Gain (loss) on early retirement of convertible debt — 1,850 Interest expense: Guarantee fees incurred under the Credit Support Agreement — 13 Interest expense incurred on the 0.875% debentures due 2021 — 404 Interest expense incurred on the 4.00% debentures due 2023 1,000 1,000 Related-party transactions with SunStrong and SunStrong Partners are as follows: As of (In thousands) April 4, 2021 January 3, 2021 Accounts receivable $ 18,313 $ 16,767 Other long-term assets 11,000 — Accrued liabilities 216 7,996 Contract liabilities 22,844 27,426 Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Revenues and fees received from investees for products/services 49,647 55,935 The below table summarizes the Company’s transactions with Maxeon Solar for the three months ended April 4, 2021: Three Months Ended (In thousands) April 4, 2021 Purchases of photovoltaic modules (recorded in cost of revenue) $ 58,154 Research and development expenses reimbursement received 9,373 Income from transition services agreement, net 3,087 The Company had the following balances related to transactions with Maxeon Solar as of April 4, 2021: (In thousands) April 4, 2021 Prepaid and other current assets $ 3,838 Accrued liabilities 7,527 Accounts payable 29,611

Debt and Credit Sources (Tables

Debt and Credit Sources (Tables)	3 Months Ended
	Apr. 04, 2021
Debt Disclosure [Abstract]
Schedule of Debt	The following table summarizes our outstanding debt on our condensed consolidated balance sheets: April 4, 2021 January 3, 2021 (In thousands) Face Value Short-term Long-term Total Face Value Short-term Long-term Total Convertible debt: 0.875% debentures due 2021 $ 62,484 $ 62,456 $ — $ 62,456 $ 62,634 $ 62,531 $ — $ 62,531 4.00% debentures due 2023 424,995 — 422,749 422,749 425,000 — 422,443 422,443 CEDA loan 30,000 29,616 — 29,616 30,000 — 29,219 29,219 Non-recourse financing and other debt 153,195 65,108 86,456 151,564 126,283 97,059 27,228 124,287 $ 670,674 $ 157,180 $ 509,205 $ 666,385 $ 643,917 $ 159,590 $ 478,890 $ 638,480 We also enter other debt arrangements to finance operations. The following presents a summary of these non-recourse financing and other debt arrangements: Aggregate Carrying Value 1 (In thousands) April 4, 2021 January 3, 2021 Balance Sheet Classification PNC Energy Capital loan 2 $ 5,478 $ 5,545 Short-term debt and Long-term debt Asset-Backed Loan 68,977 32,690 Short-term debt and Long-term debt Safe Harbor 74,243 75,910 Short-term debt and Long-term debt Other debt 2,845 560 Short-term debt and Long-term debt Various construction project debt 3 — 9,583 Short-term debt 1 Based on the nature of the debt arrangements included in the table above, and our intention to fully repay or transfer the obligations at their face values plus any applicable interest, we believe their carrying value materially approximates fair value, which is categorized within Level 3 of the fair value hierarchy. 2 In fiscal 2013, we entered into a financing agreement with PNC Energy Capital, LLC to finance our construction projects. Interest is calculated at a per annum rate equal to LIBOR plus 4.13%. 3 In the fourth quarter of fiscal 2019 and throughout fiscal 2020, we entered into various financing agreements with Fifth Third Bank, National Association, to finance our construction projects. The amount borrowed is non-recourse in nature and cannot exceed the total costs of the project. Each draw bears interest on the unpaid amount at a per annum rate equal to LIBOR. The loan matures at the earliest of 85 days after the project is placed in service; 9 months after the initial borrowing date; or the first anniversary of satisfaction of the closing conditions set forth by the Lenders, including the delivery of the signed loan agreement by the borrower Asset-Backed Loan with Bank of America
Schedule of Maturities of Debt	As of April 4, 2021, the aggregate future contractual maturities of our outstanding debt, at face value, were as follows: (In thousands) Fiscal 2021 (remaining nine months) Fiscal 2022 Fiscal 2023 Fiscal 2024 Fiscal 2025 Thereafter Total Aggregate future maturities of outstanding debt $ 126,417 $ 13,153 $ 425,729 $ 69,833 $ 817 $ 32,402 $ 668,351
Schedule of Long-Term Convertible Debt Instruments	The following table summarizes our outstanding convertible debt: April 4, 2021 January 3, 2021 (In thousands) Carrying Value Face Value Fair Value 1 Carrying Value Face Value Fair Value 1 Convertible debt: 0.875% debentures due 2021 $ 62,456 $ 62,484 $ 64,065 $ 62,531 $ 62,634 $ 64,018 4.00% debentures due 2023 422,749 424,995 652,750 422,443 425,000 549,398 $ 485,205 $ 487,479 $ 716,815 $ 484,974 $ 487,634 $ 613,416 1 The fair value of the convertible debt was determined using Level 2 inputs based on quarterly market prices as reported by an independent pricing source.

Related Party Transactions (Tab

Related Party Transactions (Tables)	3 Months Ended
	Apr. 04, 2021
Related Party Transactions [Abstract]
Schedule of Related Party Transactions	The following related-party balances and amounts are associated with transactions entered into with Total and its Affiliates. Refer to Note 9. Equity Investments for related-party transactions with unconsolidated entities in which we have a direct equity investment. As of (In thousands) April 4, 2021 January 3, 2021 Accounts receivable $ 226 $ 76 Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Revenue: Solar power systems, components, and other $ 15,105 $ 29,246 Cost of revenue: Solar power systems, components, and other 12,361 27,849 Other income Gain (loss) on early retirement of convertible debt — 1,850 Interest expense: Guarantee fees incurred under the Credit Support Agreement — 13 Interest expense incurred on the 0.875% debentures due 2021 — 404 Interest expense incurred on the 4.00% debentures due 2023 1,000 1,000 Related-party transactions with SunStrong and SunStrong Partners are as follows: As of (In thousands) April 4, 2021 January 3, 2021 Accounts receivable $ 18,313 $ 16,767 Other long-term assets 11,000 — Accrued liabilities 216 7,996 Contract liabilities 22,844 27,426 Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Revenues and fees received from investees for products/services 49,647 55,935 The below table summarizes the Company’s transactions with Maxeon Solar for the three months ended April 4, 2021: Three Months Ended (In thousands) April 4, 2021 Purchases of photovoltaic modules (recorded in cost of revenue) $ 58,154 Research and development expenses reimbursement received 9,373 Income from transition services agreement, net 3,087 The Company had the following balances related to transactions with Maxeon Solar as of April 4, 2021: (In thousands) April 4, 2021 Prepaid and other current assets $ 3,838 Accrued liabilities 7,527 Accounts payable 29,611

Net Income (Loss) Per Share (Ta

Net Income (Loss) Per Share (Tables)	3 Months Ended
	Apr. 04, 2021
Earnings Per Share [Abstract]
Schedule of loss per share	The following table presents the calculation of basic and diluted net income (loss) per share attributable to stockholders: Three Months Ended (In thousands, except per share amounts) April 4, 2021 March 29, 2020 Basic net income (loss) per share: Numerator: Net (loss) income attributable to stockholders - continuing operations $ (48,385) $ 21,540 Net loss attributable to stockholders - discontinued operations — (22,971) Net loss attributable to stockholders $ (48,385) $ (1,431) Denominator: Basic weighted-average common shares 171,200 168,822 Basic net (loss) income per share - continuing operations $ (0.28) $ 0.13 Basic net loss per share - discontinued operations — (0.14) Basic net loss per share $ (0.28) $ (0.01) Diluted net income per share: Numerator: Net (loss) income attributable to stockholders - continuing operations $ (48,385) $ 21,540 Add: Interest expense on 0.875% debentures due 2021, net of tax — 505 Net (loss) income available to common stockholders - continuing operations (48,385) 22,045 Net loss available to common stockholders - discontinued operations $ — $ (22,971) Denominator: Basic weighted-average common shares 171,200 168,822 Effect of dilutive securities: Restricted stock units — 2,104 0.875% debentures due 2021 — 6,350 Dilutive weighted-average common shares: 171,200 177,277 Dilutive net (loss) income per share - continuing operations $ (0.28) $ 0.12 Dilutive net loss per share - discontinued operations — (0.13) Dilutive net loss per share $ (0.28) $ (0.01)
Schedule of outstanding anti-dilutive potential common stock excluded from loss per share	The following is a summary of outstanding anti-dilutive potential common stock that was excluded from diluted net income per share attributable to stockholders in the following periods: Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Restricted stock units 876 3,343 0.875% debentures due 2021 1,575 — 4.00% debentures due 2023 17,068 13,922

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	3 Months Ended
	Apr. 04, 2021
Share-based Payment Arrangement [Abstract]
Summary of stock-based compensation expense by line item on the Statement of Operations	The following table summarizes the consolidated stock-based compensation expense by line item in our condensed consolidated statements of operations: Three Months Ended (In thousands) April 4, 2021 March 29, 2020 Cost of revenue 1 $ 887 $ 644 Research and development 1 370 303 Sales, general, and administrative 1 3,756 4,031 Total stock-based compensation expense $ 5,013 $ 4,978

Segment and Geographical Info_2

Segment and Geographical Information (Tables)	3 Months Ended
	Apr. 04, 2021
Segment Reporting [Abstract]
Reconciliation of Other Significant Reconciling Items from Segments to Consolidated	The following tables present segment results for the three months ended April 4, 2021 for revenue, gross margin, and adjusted EBITDA, each as reviewed by the CODM, and their reconciliation to our condensed consolidated results under U.S. GAAP, as well as information about significant customers and revenue by geography based on the destination of the shipments, and property, plant and equipment, net by segment. Three Months Ended April 4, 2021 March 29, 2020 (In thousands): Residential, Light Commercial Commercial and Industrial Solutions Others Residential, Light Commercial Commercial and Industrial Solutions Others Revenue from external customers: Dev Co $ 231,422 $ 58,121 $ 966 $ 226,630 $ 46,748 $ 470 Power Co 6,515 8,142 611 5,510 3,863 12,510 Intersegment revenue — — (11) — — 19,879 Total segment revenue as reviewed by CODM $ 237,937 $ 66,263 $ 1,566 $ 232,140 $ 50,611 $ 32,859 Segment gross profit as reviewed by CODM $ 52,921 $ 4,211 $ (248) $ 33,505 $ (1,295) $ (9,455) Adjusted EBITDA $ 25,053 $ 576 $ (614) $ 9,236 $ (7,874) $ (8,909)
Reconciliation of Operating Profit (Loss) from Segments to Consolidated	Reconciliation of Segment Revenue to Condensed Consolidated GAAP Revenue Three Months Ended (In thousands): April 4, 2021 March 29, 2020 Total segment revenue as reviewed by CODM $ 305,766 $ 315,610 Adjustments to segment revenue: Intersegment elimination 11 (19,879) Legacy utility and power plant projects — 207 Construction revenue on solar services contracts — (5,392) Results of operations of legacy business to be exited 621 — Condensed consolidated GAAP revenue $ 306,398 $ 290,546 Reconciliation of Segment Gross Profit to Condensed Consolidated GAAP Gross Profit (Loss) Three Months Ended (In thousands): April 4, 2021 March 29, 2020 Segment gross profit $ 56,884 $ 22,755 Adjustments to segment gross profit: Intersegment elimination 449 13,044 Legacy utility and power plant projects — 34 Legacy sale-leaseback transactions — (20) Gain on sale and impairment of residential lease assets 494 448 Construction revenue on solar services contracts — (4,734) Stock-based compensation expense (887) (559) Amortization of intangible assets — (1,784) Results of operations of legacy business to be exited (7,066) — Condensed consolidated GAAP gross profit $ 49,874 $ 29,184 Reconciliation of Segments EBITDA to Loss before income taxes and equity in losses of unconsolidated investees Three Months Ended (In thousands): April 4, 2021 March 29, 2020 Segment adjusted EBITDA $ 25,015 $ (7,547) Adjustments to segment adjusted EBITDA: Legacy utility and power plant projects — 34 Legacy sale-leaseback transactions — (20) Mark-to-market loss on equity investment (44,730) — Unrealized loss on equity securities — 47,871 Gain (loss) on sale and impairment of residential lease assets 5,383 722 Construction revenue on solar services contracts — (4,734) Stock-based compensation expense (5,013) (4,978) Amortization of intangible assets — (1,786) Transaction-related costs (130) (480) Business reorganization costs (954) — Restructuring charges (3,766) (1,576) Results of operations of legacy business to be exited (7,066) — Litigation (5,210) (485) Gain on convertible debt repurchased — 2,956 Net loss attributable to noncontrolling interests (1,113) (1,379) Cash interest expense, net of interest income (7,914) (8,867) Depreciation and amortization (3,342) (3,500) Corporate (5,882) 4,815 Income (loss) before income taxes and equity in loss of unconsolidated investees $ (54,722) $ 21,046

Organization And Summary Of S_3

Organization And Summary Of Significant Accounting Policies - Liquidity (Details) - 0.875% debentures due 2021 - Convertible Debt - USD ($) $ in Millions	Apr. 04, 2021	Jun. 30, 2014
Debt Instrument [Line Items]
Interest rate		0.875%
Long-term debt	$ 62.5

Transactions with Total and T_3

Transactions with Total and Total S.A. - Narrative (Details) - Total - USD ($) $ / shares in Units, $ in Billions	1 Months Ended		3 Months Ended
	Dec. 31, 2011	Jun. 30, 2011	Apr. 04, 2021
Related Party Transaction [Line Items]
Ownership after sale of stock, percentage			51.00%
Tender Offer Agreement
Related Party Transaction [Line Items]
Ownership after sale of stock, percentage		60.00%
Consideration received in cash tender offer (in dollars per share)		$ 23.25
Cash tender offer		$ 1.4
Private Placement
Related Party Transaction [Line Items]
Ownership after sale of stock, percentage	66.00%
Consideration received in cash tender offer (in dollars per share)	$ 8.80
Number of shares of common stock issued and sold	18,600,000

Transactions with Total and T_4

Transactions with Total and Total S.A. - Supply Agreements (Details) - USD ($) $ in Thousands		3 Months Ended
		Apr. 04, 2021	Mar. 29, 2020
Related Party Transaction [Line Items]
Revenue		$ 306,398	$ 290,546
Solar power systems, components, and other
Related Party Transaction [Line Items]
Revenue	[1]	$ 301,237	$ 285,289
[1]	We have related-party transactions with Total SE and its affiliates, Maxeon Solar, and unconsolidated entities in which we have a direct equity investment. These related-party transactions are recorded within the "revenue: solar power systems, components, and other," "cost of revenue: solar power systems, components, and other," "operating expenses: research and development," "operating expenses: sales, general and administrative," "operating expenses: income transition services agreement, net," and "other income (expense), net: interest expense," "benefit from (provision for) income taxes" financial statement line items in our condensed consolidated statements of operations (see Note 2, Note 9, and Note 11).

Transactions with Total and T_5

Transactions with Total and Total S.A. - Affiliation Agreement (Details) - Total	3 Months Ended
	Apr. 04, 2021
Related Party Transaction [Line Items]
Ownership after sale of stock, percentage	51.00%
Standstill Agreements
Related Party Transaction [Line Items]
Ownership after sale of stock, percentage	15.00%
Limitations on transfer of outstanding shares, percentage	0.40
Standstill Agreements | Maximum
Related Party Transaction [Line Items]
Percentage of voting interests acquired in business acquisition	100.00%

Transactions with Total and T_6

Transactions with Total and Total S.A.- 0.875% Debentures Due 2021 (Details)	Sep. 01, 2020$ / shares	Jun. 29, 2014	Apr. 04, 2021USD ($)	Mar. 29, 2020USD ($)	Jan. 03, 2021USD ($)	Jun. 30, 2014USD ($)$ / shares
Related Party Transaction [Line Items]
Debt face amount			$ 668,351,000
Cash paid for repurchase of convertible debt			0	$ 87,141,000
Convertible Debt
Related Party Transaction [Line Items]
Debt face amount			487,479,000		$ 487,634,000
0.875% debentures due 2021 | Convertible Debt
Related Party Transaction [Line Items]
Interest rate						0.875%
Debt face amount			62,484,000		62,634,000	$ 400,000,000
Conversion ratio	25.1388	20.5071
Debt instrument, convertible, conversion price (in dollars per share) | $ / shares	$ 39.78					$ 48.76
Cash paid for repurchase of convertible debt					334,700,000
Long-term debt			62,500,000
Debt instrument, repurchase amount					$ 337,400,000
0.875% debentures due 2021 | Total | Convertible Debt
Related Party Transaction [Line Items]
Debt face amount						$ 250,000,000
Long-term debt			$ 0

Transactions with Total and T_7

Transactions with Total and Total S.A. - 4.00% Debentures Due 2023 (Details)	Sep. 01, 2020$ / sharesshares	Dec. 31, 2015USD ($)$ / shares	Apr. 04, 2021USD ($)	Jan. 03, 2021USD ($)
Related Party Transaction [Line Items]
Debt face amount			$ 668,351,000
Convertible Debt
Related Party Transaction [Line Items]
Debt face amount			487,479,000	$ 487,634,000
4.00% debentures due 2023 | Convertible Debt
Related Party Transaction [Line Items]
Interest rate		4.00%
Debt face amount		$ 425,000,000	$ 424,995,000	$ 425,000,000
Conversion ratio	40.1552	32.7568
Debt instrument, convertible, conversion price (in dollars per share) | $ / shares	$ 24.90	$ 30.53
Shares issued upon conversion (in shares) | shares	4,015,515
4.00% debentures due 2023 | Total | Convertible Debt
Related Party Transaction [Line Items]
Debt face amount		$ 100,000,000

Transactions with Total and T_8

Transactions with Total and Total S.A. - Joint Solar Projects with Total and its Affiliates (Details) - USD ($) $ in Thousands	Apr. 04, 2021	Jan. 03, 2021
Related Party Transaction [Line Items]
Accounts receivable	$ 18,313	$ 16,767
Total | Related-Party Transactions with Total and its Affiliates
Related Party Transaction [Line Items]
Contract assets	48,400
Contract liabilities	1,100
Accounts receivable	226	$ 76
Accounts receivable | Total
Related Party Transaction [Line Items]
Accounts receivable	$ 200

Transactions with Total and T_9

Transactions with Total and Total S.A. - Schedule of Related Party Transactions (Details) - USD ($) $ in Thousands	Apr. 04, 2021	Jan. 03, 2021
Related Party Transaction [Line Items]
Accounts receivable	$ 18,313	$ 16,767
Total | Related-Party Transactions with Total and its Affiliates
Related Party Transaction [Line Items]
Accounts receivable	$ 226	$ 76

Transactions with Total and _10

Transactions with Total and Total S.A. - Revenue from Related Parties (Details) - Total - Related-Party Transactions with Total and its Affiliates - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020
Revenue
Related Party Transaction [Line Items]
Solar power systems, components, and other	$ 15,105	$ 29,246
Cost of revenue
Related Party Transaction [Line Items]
Purchases of photovoltaic modules (recorded in cost of revenue)	12,361	27,849
Other income
Related Party Transaction [Line Items]
Gain on extinguishment of debt	0	1,850
Credit Support Agreement | Interest expense
Related Party Transaction [Line Items]
Interest expense	0	13
0.875% debentures due 2021 | Interest expense
Related Party Transaction [Line Items]
Interest expense	0	404
4.00% debentures due 2023 | Interest expense
Related Party Transaction [Line Items]
Interest expense	$ 1,000	$ 1,000

Revenue from Contracts with C_3

Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 306,398	$ 290,546
Residential, Light Commercial
Disaggregation of Revenue [Line Items]
Revenue	237,938	226,748
Commercial and Industrial Solutions
Disaggregation of Revenue [Line Items]
Revenue	66,262	50,612
Others
Disaggregation of Revenue [Line Items]
Revenue	2,198	13,186
Solar power systems sales and EPC services
Disaggregation of Revenue [Line Items]
Revenue	297,356	270,218
Solar power systems sales and EPC services | Residential, Light Commercial
Disaggregation of Revenue [Line Items]
Revenue	232,777	221,915
Solar power systems sales and EPC services | Commercial and Industrial Solutions
Disaggregation of Revenue [Line Items]
Revenue	62,992	47,627
Solar power systems sales and EPC services | Others
Disaggregation of Revenue [Line Items]
Revenue	1,587	676
Operations and maintenance
Disaggregation of Revenue [Line Items]
Revenue	3,881	15,071
Operations and maintenance | Residential, Light Commercial
Disaggregation of Revenue [Line Items]
Revenue	0	0
Operations and maintenance | Commercial and Industrial Solutions
Disaggregation of Revenue [Line Items]
Revenue	3,270	2,561
Operations and maintenance | Others
Disaggregation of Revenue [Line Items]
Revenue	611	12,510
Residential leasing
Disaggregation of Revenue [Line Items]
Revenue	1,120	1,324
Residential leasing | Residential, Light Commercial
Disaggregation of Revenue [Line Items]
Revenue	1,120	1,324
Residential leasing | Commercial and Industrial Solutions
Disaggregation of Revenue [Line Items]
Revenue	0	0
Residential leasing | Others
Disaggregation of Revenue [Line Items]
Revenue	0	0
Solar services
Disaggregation of Revenue [Line Items]
Revenue	4,041	3,933
Solar services | Residential, Light Commercial
Disaggregation of Revenue [Line Items]
Revenue	4,041	3,509
Solar services | Commercial and Industrial Solutions
Disaggregation of Revenue [Line Items]
Revenue	0	424
Solar services | Others
Disaggregation of Revenue [Line Items]
Revenue	$ 0	$ 0

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020
Revenue from Contract with Customer [Abstract]
Revenue or cost impact threshold	$ 1	$ 1

Revenue from Contracts with C_5

Revenue from Contracts with Customers - Net Change in Estimate (Details) $ in Thousands	3 Months Ended
	Apr. 04, 2021USD ($)project	Mar. 29, 2020USD ($)project
Revenue from Contract with Customer [Abstract]
Increase (decrease) in revenue from net changes in transaction prices	$ 0	$ 0
Increase (decrease) in revenue from net changes in input cost estimates	0	(1,133)
Net decrease in revenue from net changes in estimates	$ 0	$ (1,133)
Number of projects | project	0	1
Net change in estimate as a percentage of aggregate revenue for associated projects	0.00%	(1.10%)

Revenue from Contracts with C_6

Revenue from Contracts with Customers - Contract Assets and Liabilities (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Apr. 04, 2021	Mar. 29, 2020	Dec. 29, 2019
Disaggregation of Revenue [Line Items]
Increase (decrease) in contract with customer, liability, including addbacks	$ (13.5)	$ (11.4)
Revenue recognized	40.6		$ 46.6
Commercial and Industrial Solutions
Disaggregation of Revenue [Line Items]
Increase (decrease) in contract assets	$ (0.5)	$ (35.7)

Revenue from Contracts with C_7

Revenue from Contracts with Customers - Schedule of Contract Assets and Liabilities (Details) - USD ($) $ in Thousands	Apr. 04, 2021	Jan. 03, 2021
Revenue from Contract with Customer [Abstract]
Contract assets	$ 122,315	$ 122,802
Contract with Customer, Liability	$ 89,133	$ 102,594

Revenue from Contracts with C_8

Revenue from Contracts with Customers - Performance Obligations (Details) $ in Millions	3 Months Ended
	Apr. 04, 2021USD ($)
Various Distribution Generation Projects
Disaggregation of Revenue [Line Items]
Percentage of revenue recognized	92.70%
Solar power systems sales and EPC services
Disaggregation of Revenue [Line Items]
Revenue, remaining performance obligation, amount	$ 143.6
Modules and components
Disaggregation of Revenue [Line Items]
Revenue, remaining performance obligation, amount	$ 242.1

Balance Sheet Components - Acco

Balance Sheet Components - Accounts Receivable, Net (Details) - USD ($) $ in Thousands	Apr. 04, 2021	Jan. 03, 2021
Balance Sheet Related Disclosures [Abstract]
Accounts receivable, gross	$ 119,818	$ 124,402
Less: allowance for credit losses	(14,846)	(15,379)
Less: allowance for sales returns	(168)	(159)
Accounts receivable, net	104,804	108,864
Debt Instrument [Line Items]
Accounts receivable, gross	119,818	$ 124,402
Loan And Security Agreement Lien
Balance Sheet Related Disclosures [Abstract]
Accounts receivable, gross	59,200
Debt Instrument [Line Items]
Accounts receivable, gross	$ 59,200

Balance Sheet Components - Allo

Balance Sheet Components - Allowance for Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 15,379	$ 17,208
Provision for credit losses	295	1,968
Write-offs	(828)	0
Balance at end of period	$ 14,846	$ 19,176

Balance Sheet Components - Inve

Balance Sheet Components - Inventories (Details) - USD ($) $ in Thousands	Apr. 04, 2021	Jan. 03, 2021
Balance Sheet Related Disclosures [Abstract]
Raw materials	$ 570	$ 2,630
Work-in-process	0	143
Finished goods 2	230,124	207,809
Inventories	230,694	$ 210,582
Loan And Security Agreement Lien
Debt Instrument [Line Items]
Inventory, gross	$ 161,200

Balance Sheet Components - Prep

Balance Sheet Components - Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands		Apr. 04, 2021	Jan. 03, 2021
Balance Sheet Related Disclosures [Abstract]
Deferred project costs		$ 26,870	$ 26,996
VAT receivables, current portion		1,252	1,174
Deferred costs for solar power systems		21,357	24,526
Other receivables		19,626	19,348
Prepaid taxes		67	205
Other		19,937	22,002
Prepaid expenses and other current assets	[1]	$ 89,109	$ 94,251
[1]	We have related-party balances for transactions made with Total SE and its affiliates, Maxeon Solar and unconsolidated entities in which we have a direct equity investment. These related-party balances are recorded within the "accounts receivable, net," "contract assets," "prepaid expenses and other current assets," "other long-term assets," "accounts payable," "accrued liabilities," "contract liabilities, current portion," "convertible debt, net of current portion," and "contract liabilities, net of current portion" financial statement line items on our condensed consolidated balance sheets (see Note 2, Note 8, Note 9, Note 10, and Note 11).

Balance Sheet Components - Prop

Balance Sheet Components - Property, Plant and Equipment, Net (Details) - USD ($) $ in Thousands	Apr. 04, 2021	Jan. 03, 2021
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 141,798	$ 137,543
Less: accumulated depreciation	(95,008)	(90,777)
Property, plant and equipment, net	46,790	46,766
Manufacturing equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	17,972	17,134
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	29,257	29,385
Solar power systems
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	30,844	30,110
Computer equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	49,738	49,935
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	7,855	7,899
Construction-in-process
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 6,132	$ 3,080

Balance Sheet Components - Othe

Balance Sheet Components - Other Long-term Assets (Details) - USD ($) $ in Thousands	Apr. 04, 2021	Jan. 03, 2021
Balance Sheet Related Disclosures [Abstract]
Equity investments with readily determinable fair value	$ 244,038	$ 614,148
Equity investments without readily determinable fair value	801	801
Equity investments with fair value option	9,924	9,924
Long-term inventory	15,245	27,085
Other	56,758	43,754
Other long-term assets	$ 326,766	$ 695,712

Balance Sheet Components - Accr

Balance Sheet Components - Accrued Liabilities (Details) - USD ($) $ in Thousands	Apr. 04, 2021	Jan. 03, 2021
Balance Sheet Related Disclosures [Abstract]
Employee compensation and employee benefits	$ 20,742	$ 23,312
Interest payable	3,953	8,796
Short-term warranty reserves	25,036	29,337
Restructuring reserve	4,532	2,808
Legal expenses	10,991	10,493
Taxes payable	23,056	25,968
Other	24,736	21,201
Accrued liabilities	$ 113,046	$ 121,915

Balance Sheet Components - Ot_2

Balance Sheet Components - Other Long-term Liabilities (Details) - USD ($) $ in Thousands	Apr. 04, 2021	Jan. 03, 2021
Balance Sheet Related Disclosures [Abstract]
Deferred revenue	$ 35,604	$ 36,527
Long-term warranty reserves	47,235	52,540
Unrecognized tax benefits	12,492	12,584
Long-term pension liability	5,407	5,185
Long-term deferred tax liabilities	10,671	13,468
Other	41,534	37,293
Other long-term liabilities	$ 152,943	$ 157,597

Balance Sheet Components - Accu

Balance Sheet Components - Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	Apr. 04, 2021	Jan. 03, 2021
Balance Sheet Related Disclosures [Abstract]
Cumulative translation adjustment	$ 9,633	$ 9,635
Net gain on long-term pension liability obligation	(250)	(250)
Net gain on long-term derivative financial instrument	(423)	(570)
Deferred taxes	(63)	(16)
Accumulated other comprehensive income	$ 8,897	$ 8,799

Solar Services - Operating Leas

Solar Services - Operating Leases (Details) - USD ($) $ in Thousands	Apr. 04, 2021	Jan. 03, 2021
Leases [Abstract]
Solar power systems leased	$ 115,206	$ 115,620
Less: accumulated depreciation and impairment	(66,875)	(65,219)
Solar power systems leased, net	$ 48,331	$ 50,401

Solar Services - Lease Payments

Solar Services - Lease Payments to be Received (Details) $ in Thousands	Apr. 04, 2021USD ($)
Leases [Abstract]
Fiscal 2021 (remaining nine months)	$ 43
Fiscal 2022	52
Fiscal 2023	52
Fiscal 2024	52
Fiscal 2025	53
Thereafter	701
Total	$ 953

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands	Apr. 04, 2021	Jan. 03, 2021
Other long-term assets:
Equity investments with readily determinable fair value	$ 244,038	$ 614,148
Total assets	579,342	624,072
Other long-term liabilities:
Total liabilities	452	600
Level 3
Other long-term assets:
Total assets	9,924	9,924
Other long-term liabilities:
Total liabilities	0	0
Level 2
Other long-term assets:
Total assets	0	0
Other long-term liabilities:
Total liabilities	452	600
Level 1
Other long-term assets:
Total assets	569,418	614,148
Other long-term liabilities:
Total liabilities	0	0
Other long-term assets:
Other long-term assets:
Equity investments with fair value option ("FVO")	9,924	9,924
Equity investments with readily determinable fair value	569,418	614,148
Other long-term assets: | Level 3
Other long-term assets:
Equity investments with fair value option ("FVO")	9,924	9,924
Equity investments with readily determinable fair value	0	0
Other long-term assets: | Level 2
Other long-term assets:
Equity investments with fair value option ("FVO")	0	0
Equity investments with readily determinable fair value	0	0
Other long-term assets: | Level 1
Other long-term assets:
Equity investments with fair value option ("FVO")	0	0
Equity investments with readily determinable fair value	569,418	614,148
Other long-term liabilities:
Other long-term liabilities:
Interest rate swap contracts	452	600
Other long-term liabilities: | Level 3
Other long-term liabilities:
Interest rate swap contracts	0	0
Other long-term liabilities: | Level 2
Other long-term liabilities:
Interest rate swap contracts	452	600
Other long-term liabilities: | Level 1
Other long-term liabilities:
Interest rate swap contracts	$ 0	$ 0

Fair Value Measurements - Equit

Fair Value Measurements - Equity Method Investments Activity (Details) - Equity investments with FVO $ in Thousands	3 Months Ended
	Apr. 04, 2021USD ($)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance as of January 3, 2021	$ 9,924
Equity Distribution	0
Additional Investment	0
Ending balance as of April 4, 2021	$ 9,924

Fair Value Measurements - Level

Fair Value Measurements - Level 3 significant unobservable input sensitivity (Details) - Equity investments - Level 3 $ in Thousands	Apr. 04, 2021USD ($)
Discounted cash flows
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Total assets	$ 9,924
Measurement Input, Default Rate | Valuation Technique, Residual
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.075
Measurement Input, Default Rate | Minimum | Discounted cash flows
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.125
Measurement Input, Default Rate | Maximum | Discounted cash flows
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement input	0.13

Fair Value Measurements - Narra

Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	Aug. 09, 2018	Apr. 04, 2021	Mar. 29, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gain (loss) on investments		$ 44.7	$ 47.9
Enphase Shares
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Shares issuable to the Company at closing of agreement	7,500,000
Investment shares sold (in shares)			1,000,000
Proceeds from sale of equity investment			$ 43.7

Restructuring (Details)

Restructuring (Details) $ in Thousands	3 Months Ended			9 Months Ended
	Apr. 04, 2021USD ($)employees	Jun. 28, 2020employee	Mar. 29, 2020USD ($)	Jun. 30, 2020employee
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 3,766		$ 1,576
January 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring incurred cost	3,700
December 2019 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring incurred cost	$ 10,200
Facility Closing | January 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Reorganization, number of jobs affected | employees	170
Minimum | Facility Closing | January 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, exiting period	3 months
Minimum | Spinoff | January 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 7,000
Severance costs	4,000
Real estate lease termination and other associated costs	$ 3,000
Minimum | Spinoff | December 2019 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Reorganization, number of jobs affected | employee		145
Restructuring and related cost, exiting period		12 months
Reorganization, number of jobs affected as a percentage of global workforce		3.00%
Minimum | Spinoff | December 2019 Restructuring Plan | SunPower Technologies
Restructuring Cost and Reserve [Line Items]
Reorganization, number of jobs affected | employee		65
Minimum | Spinoff | December 2019 Restructuring Plan | SunPower Energy Services
Restructuring Cost and Reserve [Line Items]
Reorganization, number of jobs affected | employee				80
Maximum | Facility Closing | January 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, exiting period	6 months
Maximum | Spinoff | January 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 9,000
Severance costs	5,000
Real estate lease termination and other associated costs	$ 4,000
Maximum | Spinoff | December 2019 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Reorganization, number of jobs affected | employee		160
Restructuring and related cost, exiting period		18 months
Maximum | Spinoff | December 2019 Restructuring Plan | SunPower Technologies
Restructuring Cost and Reserve [Line Items]
Reorganization, number of jobs affected | employee		70
Maximum | Spinoff | December 2019 Restructuring Plan | SunPower Energy Services
Restructuring Cost and Reserve [Line Items]
Reorganization, number of jobs affected | employee				90

Restructuring - Cost (Details)

Restructuring - Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	$ 3,766	$ 1,576
Cumulative To Date	82,488
January 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	3,684	0
Cumulative To Date	3,684
December 2019 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	84	1,639
Cumulative To Date	10,164
Other Legacy Restructuring Plans
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	(2)	(63)
Cumulative To Date	68,640
Severance and benefits | January 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	3,671	0
Cumulative To Date	3,671
Severance and benefits | December 2019 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	(28)	1,639
Cumulative To Date	10,005
Other costs | January 2021 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	13	0
Cumulative To Date	13
Other costs | December 2019 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	112	$ 0
Cumulative To Date	$ 159

Restructuring - Rollforward (De

Restructuring - Rollforward (Details) $ in Thousands	3 Months Ended
	Apr. 04, 2021USD ($)
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	$ 2,808
Restructuring Costs (Benefits)	3,766
(Payments) Recoveries	(2,042)
Restructuring reserve, end	4,532
January 2021 Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	0
Restructuring Costs (Benefits)	3,684
(Payments) Recoveries	(47)
Restructuring reserve, end	3,637
December 2019 Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	2,608
Restructuring Costs (Benefits)	84
(Payments) Recoveries	(1,927)
Restructuring reserve, end	765
Other Legacy Restructuring Plans
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	200
Restructuring Costs (Benefits)	(2)
(Payments) Recoveries	(68)
Restructuring reserve, end	130
Severance and benefits | January 2021 Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	0
Restructuring Costs (Benefits)	3,671
(Payments) Recoveries	(34)
Restructuring reserve, end	3,637
Severance and benefits | December 2019 Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	2,608
Restructuring Costs (Benefits)	(28)
(Payments) Recoveries	(1,815)
Restructuring reserve, end	765
Other costs | January 2021 Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	0
Restructuring Costs (Benefits)	13
(Payments) Recoveries	(13)
Restructuring reserve, end	0
Other costs | December 2019 Restructuring Plan
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	0
Restructuring Costs (Benefits)	112
(Payments) Recoveries	(112)
Restructuring reserve, end	$ 0

Commitments and Contingencies -

Commitments and Contingencies - Facility and Equipment Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020
Loss Contingencies [Line Items]
Operating lease expense	$ 3,714	$ 3,418
Sublease income	(106)	(35)
Rent expense	3,608	3,383
Operating cash flows for operating leases	4,163	3,309
Right-of-use assets obtained in exchange for lease obligations	$ 11,528	$ 12,461
Weighted-average remaining lease term (in years) - operating leases	8 years	7 years
Weighted-average discount rate - operating leases	8.80%	9.00%
Minimum
Loss Contingencies [Line Items]
Lessee, operating lease, renewal term	1 year
Maximum
Loss Contingencies [Line Items]
Lessee, operating lease, renewal term	10 years

Commitments and Contingencies_2

Commitments and Contingencies - Future Maturities (Details) $ in Thousands	Apr. 04, 2021USD ($)lease
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2021	$ 13,375
2022	15,090
2023	12,289
2024	8,426
2025	4,758
Thereafter	26,098
Total lease payments	80,036
Less: imputed interest	(24,167)
Total	$ 55,869
Number of operating leases not yet commenced | lease	2
Operating leases not yet commenced, amount	$ 24,700
Operating leases not yet commenced, term of contracts	16 years

Commitments and Contingencies_3

Commitments and Contingencies - Purchase Commitment (Details) $ in Thousands	3 Months Ended
	Apr. 04, 2021USD ($)vendor
Purchase Obligation, Fiscal Year Maturity [Abstract]
Fiscal 2021 (remaining nine months)	$ 207,960
Fiscal 2022	108,401
Fiscal 2023	33,148
Fiscal 2024	1,710
Fiscal 2025	775
Thereafter	5,307
Total	357,301
Future purchase obligations related to non-cancellable purchase orders	33,500
Future purchase obligations related to long-term supply agreements	$ 323,800
Purchase commitments, number of vendors | vendor	1

Commitments and Contingencies_4

Commitments and Contingencies - Product Warranties (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020
Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward]
Balance at the beginning of the period	$ 81,877	$ 101,380
Accruals for warranties issued during the period	9,484	6,526
Settlements and adjustments during the period	(19,090)	(8,354)
Balance at the end of the period	$ 72,271	$ 99,552

Commitments and Contingencies_5

Commitments and Contingencies - Narrative (Details) - USD ($) $ in Thousands	Apr. 04, 2021	Jan. 03, 2021
Commitments and Contingencies Disclosure [Abstract]
Extended product warranty accrual, current	$ 8,300	$ 9,100
Extended product warranty accrual, noncurrent	2,800	3,100
Unrecognized tax benefits	12,500	12,600
Income tax contingencies	9,700	$ 9,400
Contractual obligation, to be paid, 2021	90,900
Contractual obligation, to be paid, 2022	125,800
Estimated litigation liability	$ 4,500

Equity Investments - Equity Met

Equity Investments - Equity Method Investments (Details) - USD ($) $ in Thousands	Apr. 04, 2021	Jan. 03, 2021
Schedule of Equity Method Investments [Line Items]
Equity investments with readily determinable fair value	$ 244,038	$ 614,148
Equity investments without readily determinable fair value:	801	801
Equity investments with fair value option	9,924	9,924
Equity method investments	580,143	624,873
Enphase Energy, Inc.
Schedule of Equity Method Investments [Line Items]
Equity investments with readily determinable fair value	$ 569,418	614,148
Owned shares, reclassified to current assets	2,000,000
Project entities
Schedule of Equity Method Investments [Line Items]
Equity investments without readily determinable fair value:	$ 122	122
Other Equity Investments Without Readily Determinable Fair Value
Schedule of Equity Method Investments [Line Items]
Equity investments without readily determinable fair value:	679	679
SunStrong Capital Holdings
Schedule of Equity Method Investments [Line Items]
Equity investments with fair value option	7,645	7,645
SunStrong Partners
Schedule of Equity Method Investments [Line Items]
Equity investments with fair value option	2,279	2,279
Total equity investment with fair value option
Schedule of Equity Method Investments [Line Items]
Equity investments with fair value option	$ 9,924	$ 9,924

Equity Investments - Summarized

Equity Investments - Summarized Financial Information of Unconsolidated VIEs (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020	Jan. 03, 2021
Schedule of Investments [Line Items]
Gross profit	$ 49,874	$ 29,184
Net income	(48,385)	(1,431)
Current assets	1,101,647		$ 790,315
Current liabilities	500,692		529,731
SunStrong Capital Holdings | Variable Interest Entity, Not Primary Beneficiary
Schedule of Investments [Line Items]
Revenue	33,097	29,464
Gross profit	1,214	(1,438)
Net income	(45,789)	$ 21,640
Current assets	92,493		93,752
Long-term assets	1,439,119		1,378,382
Current liabilities	47,859		48,126
Long-term liabilities	$ 1,168,705		$ 1,130,484

Equity Investments - Related Pa

Equity Investments - Related Party Transactions with Investees (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020	Jan. 03, 2021
Equity Method Investments and Joint Ventures [Abstract]
Accounts receivable	$ 18,313		$ 16,767
Other long-term assets	11,000		0
Accrued liabilities	216		7,996
Contract liabilities	22,844		$ 27,426
Revenues and fees received from investees for products/services	$ 49,647	$ 55,935

Equity Investments - Consolidat

Equity Investments - Consolidated VIEs (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020	Jan. 03, 2021
Variable Interest Entity [Line Items]
Assets	$ 1,594,771		$ 1,646,482
Solar Sail | Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Revenue	3,600	$ 700
Assets	$ 79,100

Debt and Credit Sources - Sched

Debt and Credit Sources - Schedule of Debt (Details) - USD ($)	Apr. 04, 2021	Jan. 03, 2021	Dec. 31, 2015	Jun. 30, 2014	Dec. 31, 2010
Debt Instrument [Line Items]
Face Value	$ 668,351,000
CEDA loan
Debt Instrument [Line Items]
Face Value	30,000,000	$ 30,000,000			$ 30,000,000
Short-term	29,616,000	0
Long-term	0	29,219,000
Total	29,616,000	29,219,000
Interest rate					8.50%
Non-recourse financing and other debt
Debt Instrument [Line Items]
Face Value	153,195,000	126,283,000
Short-term	65,108,000	97,059,000
Long-term	86,456,000	27,228,000
Total	151,564,000	124,287,000
Convertible Debt
Debt Instrument [Line Items]
Face Value	487,479,000	487,634,000
Convertible Debt | 0.875% debentures due 2021
Debt Instrument [Line Items]
Face Value	62,484,000	62,634,000		$ 400,000,000
Short-term	62,456,000	62,531,000
Long-term	0	0
Total	62,456,000	62,531,000
Interest rate				0.875%
Convertible Debt | 4.00% debentures due 2023
Debt Instrument [Line Items]
Face Value	424,995,000	425,000,000	$ 425,000,000
Short-term	0	0
Long-term	422,749,000	422,443,000
Total	422,749,000	422,443,000
Interest rate			4.00%
Convertible and Loans
Debt Instrument [Line Items]
Face Value	670,674,000	643,917,000
Short-term	157,180,000	159,590,000
Long-term	509,205,000	478,890,000
Total	$ 666,385,000	$ 638,480,000

Debt and Credit Sources - Sch_2

Debt and Credit Sources - Schedule of Maturities (Details) $ in Thousands	Apr. 04, 2021USD ($)
Debt Disclosure [Abstract]
Fiscal 2021 (remaining nine months)	$ 126,417
Fiscal 2022	13,153
Fiscal 2023	425,729
Fiscal 2024	69,833
Fiscal 2025	817
Thereafter	32,402
Total	$ 668,351

Debt and Credit Sources - Sch_3

Debt and Credit Sources - Schedule of Convertible Debt (Details) - USD ($)	Apr. 04, 2021	Jan. 03, 2021	Dec. 31, 2015	Jun. 30, 2014
Debt Instrument [Line Items]
Face Value	$ 668,351,000
Convertible Debt
Debt Instrument [Line Items]
Carrying Value	485,205,000	$ 484,974,000
Face Value	487,479,000	487,634,000
Fair value	716,815,000	613,416,000
Convertible Debt | 0.875% debentures due 2021
Debt Instrument [Line Items]
Carrying Value	62,456,000	62,531,000
Face Value	62,484,000	62,634,000		$ 400,000,000
Fair value	64,065,000	64,018,000
Interest rate				0.875%
Convertible Debt | 4.00% debentures due 2023
Debt Instrument [Line Items]
Carrying Value	422,749,000	422,443,000
Face Value	424,995,000	425,000,000	$ 425,000,000
Fair value	$ 652,750,000	$ 549,398,000
Interest rate			4.00%

Debt and Credit Sources - Narra

Debt and Credit Sources - Narrative (Details) - USD ($)	Apr. 04, 2021	Jan. 03, 2021	Mar. 29, 2019	Dec. 31, 2010
Debt Instrument [Line Items]
Debt face amount	$ 668,351,000
Non-recourse financing arrangements	151,500,000
CEDA loan
Debt Instrument [Line Items]
Debt face amount	30,000,000	$ 30,000,000		$ 30,000,000
Interest rate				8.50%
Debt, fair value	30,100,000
March 2019 Revolving Credit Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity			$ 75,000,000
Long-term line of credit	$ 69,100,000	$ 32,800,000

Debt and Credit Sources - Non-r

Debt and Credit Sources - Non-recourse Debt (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Apr. 04, 2021	Jun. 29, 2014	Jan. 03, 2021
Debt Instrument [Line Items]
Non-recourse financing arrangements	$ 151,500
PNC Energy Capital Loan
Debt Instrument [Line Items]
Non-recourse financing arrangements	5,478		$ 5,545
PNC Energy Capital Loan | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread		4.13%
Asset-Backed Loan
Debt Instrument [Line Items]
Non-recourse financing arrangements	68,977		32,690
Safe Harbor
Debt Instrument [Line Items]
Non-recourse financing arrangements	74,243		75,910
Other debt
Debt Instrument [Line Items]
Non-recourse financing arrangements	2,845		560
Various construction project debt
Debt Instrument [Line Items]
Non-recourse financing arrangements	$ 0		$ 9,583
Various construction project debt | Minimum
Debt Instrument [Line Items]
Expiration period	85 days
Various construction project debt | Maximum
Debt Instrument [Line Items]
Expiration period	9 months

Related Party Transactions (Det

Related Party Transactions (Details) - Corporate Joint Venture - Maxeon Solar $ in Thousands	3 Months Ended
	Apr. 04, 2021USD ($)
Related Party Transaction [Line Items]
Purchases of photovoltaic modules (recorded in cost of revenue)	$ 58,154
Research and development expenses reimbursement received	9,373
Income from transition services agreement, net	3,087
Prepaid and other current assets	3,838
Accrued liabilities	7,527
Accounts payable	$ 29,611

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020	Jan. 03, 2021
Income Tax Disclosure [Abstract]
Tax expense (benefit)	$ (5,224)	$ 885
(Loss) income from continuing operations before income taxes and equity in earnings of unconsolidated investees	(54,722)	$ 21,046
Unrecognized tax benefits	$ 12,500		$ 12,600

Net Income Per Share - Calculat

Net Income Per Share - Calculation of Basic and Diluted Net Loss per share Attributable (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Apr. 04, 2021	Jun. 28, 2020	Mar. 29, 2020
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Net (loss) income attributable to stockholders - continuing operations	$ (48,385)		$ 21,540
Net loss attributable to stockholders - discontinued operations	0		(22,971)
Net loss attributable to stockholders	$ (48,385)		$ (1,431)
Basic weighted-average common shares (in shares)	171,200,000	168,822,000	168,822,000
Basic net (loss) income per share - continuing operations (usd per share)	$ (0.28)		$ 0.13
Basic net loss per share - discontinued operations (usd per share)	0		(0.14)
Basic net loss per share (usd per share)	$ (0.28)		$ (0.01)
Net (loss) income available to common stockholders - continuing operations	$ (48,385)		$ 22,045
Dilutive weighted-average common shares (shares)	171,200,000	177,277,000	177,277,000
Dilutive net (loss) income per share - continuing operations (usd per share)	$ (0.28)		$ 0.12
Dilutive net loss per share - discontinued operations (usd per share)	0		(0.13)
Net loss per share - diluted (usd per share)	$ (0.28)		$ (0.01)
Restricted stock units
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Restricted stock units (in shares)	0		2,104,000
0.875% debentures due 2021
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
0.875% debentures due 2021 (in shares)	0		6,350,000
Interest rate	0.875%
0.875% debentures due 2021
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Add: Interest expense on 0.875% debentures due 2021, net of tax	$ 0		$ 505

Net Income Per Share - Anti-dil

Net Income Per Share - Anti-dilutive Securities (Details) - shares shares in Thousands	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount	876	3,343
0.875% debentures due 2021
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Interest rate	0.875%
Antidilutive securities excluded from computation of earnings per share, amount	1,575	0
4.00% debentures due 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Interest rate	4.00%
Antidilutive securities excluded from computation of earnings per share, amount	17,068	13,922

Stock-Based Compensation (Detai

Stock-Based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 5,013	$ 4,978
Cost of revenue
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	887	644
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	370	303
Sales, general, and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 3,756	$ 4,031

Segment and Geographical Info_3

Segment and Geographical Information - Narrative (Details)	12 Months Ended
	Dec. 29, 2019	Dec. 30, 2018
Segment Reporting [Abstract]
Equity method investee, percentage ownership sold		0.49
Ownership retained after deconsolidation	0.51

Segment and Geographical Info_4

Segment and Geographical Information - Reconciliation of Other Significant Reconciling Items from Segments to Consolidated (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020
Segment Reporting Information [Line Items]
Gross profit	$ 49,874	$ 29,184
Adjusted EBITDA	(54,722)	21,046
Residential, Light Commercial
Segment Reporting Information [Line Items]
Revenue from Contract with Customers, Reviewed by CODM	237,937	232,140
Gross profit	52,921	33,505
Adjusted EBITDA	25,053	9,236
Residential, Light Commercial
Segment Reporting Information [Line Items]
Revenue from Contract with Customers, Reviewed by CODM	66,263	50,611
Gross profit	4,211	(1,295)
Adjusted EBITDA	576	(7,874)
Others
Segment Reporting Information [Line Items]
Revenue from Contract with Customers, Reviewed by CODM	1,566	32,859
Gross profit	(248)	(9,455)
Adjusted EBITDA	(614)	(8,909)
Operating Segments
Segment Reporting Information [Line Items]
Gross profit	56,884	22,755
Adjusted EBITDA	25,015	(7,547)
Intersegment revenue
Segment Reporting Information [Line Items]
Gross profit	449	13,044
Intersegment revenue | Residential, Light Commercial
Segment Reporting Information [Line Items]
Revenue from Contract with Customers, Reviewed by CODM	0	0
Intersegment revenue | Residential, Light Commercial
Segment Reporting Information [Line Items]
Revenue from Contract with Customers, Reviewed by CODM	0	0
Intersegment revenue | Others
Segment Reporting Information [Line Items]
Revenue from Contract with Customers, Reviewed by CODM	(11)	19,879
Dev Co | Operating Segments | Residential, Light Commercial
Segment Reporting Information [Line Items]
Revenue from Contract with Customers, Reviewed by CODM	231,422	226,630
Dev Co | Operating Segments | Residential, Light Commercial
Segment Reporting Information [Line Items]
Revenue from Contract with Customers, Reviewed by CODM	58,121	46,748
Dev Co | Operating Segments | Others
Segment Reporting Information [Line Items]
Revenue from Contract with Customers, Reviewed by CODM	966	470
Power Co | Operating Segments | Residential, Light Commercial
Segment Reporting Information [Line Items]
Revenue from Contract with Customers, Reviewed by CODM	6,515	5,510
Power Co | Operating Segments | Residential, Light Commercial
Segment Reporting Information [Line Items]
Revenue from Contract with Customers, Reviewed by CODM	8,142	3,863
Power Co | Operating Segments | Others
Segment Reporting Information [Line Items]
Revenue from Contract with Customers, Reviewed by CODM	$ 611	$ 12,510

Segment and Geographical Info_5

Segment and Geographical Information - Reconciliation of Segment Revenue to Condensed Consolidated GAAP Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020
Segment Reporting Information [Line Items]
Revenue	$ 306,398	$ 290,546
Operating Segments
Segment Reporting Information [Line Items]
Total segment revenue as reviewed by CODM	305,766	315,610
Intersegment revenue
Segment Reporting Information [Line Items]
Revenue	11	(19,879)
Segment Reconciling Items
Segment Reporting Information [Line Items]
Revenue	0	(5,392)
Legacy utility and power plant projects	0	207
Results of operations of legacy business to be exited	$ 621	$ 0

Segment and Geographical Info_6

Segment and Geographical Information - Reconciliation of Segment Gross Profit to Condensed Consolidated GAAP Gross Profit (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020
Segment Reporting Information [Line Items]
Gross profit	$ 49,874	$ 29,184
Construction revenue on solar services contracts	306,398	290,546
Stock-based compensation expense	5,437	6,867
Operating Segments
Segment Reporting Information [Line Items]
Gross profit	56,884	22,755
Intersegment revenue
Segment Reporting Information [Line Items]
Gross profit	449	13,044
Construction revenue on solar services contracts	11	(19,879)
Segment Reconciling Items
Segment Reporting Information [Line Items]
Legacy utility and power plant projects	0	207
Construction revenue on solar services contracts	0	(5,392)
Results of operations of legacy business to be exited	621	0
Gross Profit | Segment Reconciling Items
Segment Reporting Information [Line Items]
Legacy utility and power plant projects	0	34
Legacy sale-leaseback transactions	0	(20)
Gain on sale and impairment of residential lease assets	494	448
Construction revenue on solar services contracts	0	(4,734)
Stock-based compensation expense	(887)	(559)
Amortization of intangible assets	0	(1,784)
Results of operations of legacy business to be exited	$ (7,066)	$ 0

Segment and Geographical Info_7

Segment and Geographical Information - Reconciliation of Segments EBITDA to Loss before income taxes and equity in earnings (losses) of unconsolidated investees (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 04, 2021	Mar. 29, 2020
Segment Reporting Information [Line Items]
Adjusted EBITDA	$ (54,722)	$ 21,046
Unrealized loss on equity securities	(44,730)	49,152
Construction revenue on solar services contracts	306,398	290,546
Stock-based compensation expense	5,437	6,867
Restructuring charges	3,766	1,576
Net loss attributable to noncontrolling interests	(1,113)	(707)
Operating Segments
Segment Reporting Information [Line Items]
Adjusted EBITDA	25,015	(7,547)
Segment Reconciling Items
Segment Reporting Information [Line Items]
Legacy utility and power plant projects	0	207
Construction revenue on solar services contracts	0	(5,392)
Results of operations of legacy business to be exited	621	0
Income (Loss) From Continuing Operations Before Income Taxes Minority Interest And Income (Loss) From Equity Method Investments | Segment Reconciling Items
Segment Reporting Information [Line Items]
Legacy utility and power plant projects	0	34
Legacy sale-leaseback transactions	0	(20)
Mark-to-market loss on equity investment	(44,730)	0
Unrealized loss on equity securities	0	47,871
Gain on business divestiture	5,383	722
Construction revenue on solar services contracts	0	(4,734)
Stock-based compensation expense	(5,013)	(4,978)
Amortization of intangible assets	0	(1,786)
Transaction-related costs	(130)	(480)
Business reorganization costs	(954)	0
Restructuring charges	(3,766)	(1,576)
Litigation	(5,210)	(485)
Gain on convertible debt repurchased	0	2,956
Net loss attributable to noncontrolling interests	(1,113)	(1,379)
Cash interest expense, net of interest income	(7,914)	(8,867)
Depreciation	(3,342)	(3,500)
Income (Loss) From Continuing Operations Before Income Taxes Minority Interest And Income (Loss) From Equity Method Investments | Corporate
Segment Reporting Information [Line Items]
Adjusted EBITDA	(5,882)	4,815
Gross Profit | Segment Reconciling Items
Segment Reporting Information [Line Items]
Legacy utility and power plant projects	0	34
Legacy sale-leaseback transactions	0	(20)
Gain on business divestiture	(494)	(448)
Construction revenue on solar services contracts	0	(4,734)
Stock-based compensation expense	(887)	(559)
Amortization of intangible assets	0	(1,784)
Results of operations of legacy business to be exited	$ (7,066)	$ 0

Subsequent Events (Details)

Subsequent Events (Details) - USD ($)	Apr. 04, 2021	Jan. 03, 2021	Dec. 31, 2010
Subsequent Event [Line Items]
Debt face amount	$ 668,351,000
CEDA loan
Subsequent Event [Line Items]
Debt face amount	$ 30,000,000	$ 30,000,000	$ 30,000,000
Interest rate			8.50%