Solar panels · July 2026

One name, three companies: SunPower's long unravelling, and its unlikely survival.

SunPower is not one company pretending to be three. It is three separately owned, financed and managed businesses that all still trade under a name built by a single Stanford spinout in 1985. A US installer with no factory. A Singapore-listed manufacturer, now under court-appointed judicial management, holding the actual back-contact patents. And a business unit of a Chinese consumer-electronics conglomerate selling the brand everywhere outside the US. None of the three can speak for the others. If you own SunPower- or Maxeon-branded panels, including in Australia, that split has direct consequences for your warranty, addressed in the ownership guidance below.

Where the name started

A Stanford spinout, a Cypress rescue, and one cell architecture that has outlasted every owner since.

SunPower traces to April 1985, when Stanford electrical engineering professor Richard Swanson took a sabbatical to commercialise solar cell research from the university's Electronics Laboratory, backed in part by US Department of Energy and Electric Power Research Institute grants (Wikipedia; company history). The company was first named Eos, funded with roughly $2,000 of Swanson and co-founder Richard Crane's own savings, before a 1989 investment from Robert Lorenzini prompted the rename to SunPower. Its technical core, then and now, is the interdigitated back-contact (IBC) cell: every electrical contact moved to the rear of the cell, eliminating the front-side metal grid that shades a conventional cell and reduces its active light-collecting area.

Commercial traction through the 1980s and 1990s was thin, funded largely by research grants and niche high-value applications such as solar race cars and unmanned aerial vehicles. By the early 2000s the company was close to folding. The turning point was 2002, when Cypress Semiconductor, led by T.J. Rodgers, a former Stanford classmate of Swanson's, took a majority stake and ultimately invested on the order of $150 million after an initial $8.8 million commitment. That capital funded the move from laboratory demonstration to volume manufacturing: the resulting A-300 cell reached roughly 20% efficiency against an industry average of 12 to 15%. SunPower listed on NASDAQ as SPWR in November 2005, raising approximately $138 million.

One thread is worth flagging early, because it resurfaces later in this piece: T.J. Rodgers, the Cypress executive who backed SunPower in 2002, is the same investor who, nearly two decades later, bankrolled Complete Solaria's purchase of the bankrupt SunPower Corporation's assets in 2024.

The premium decade

TotalEnergies paid roughly $1.37 billion for a vertically integrated SunPower, then decided to take it apart.

In 2011, French energy major TotalEnergies (then Total S.A.) acquired a majority stake in SunPower for approximately $1.37 billion. This is the period most associated with SunPower's premium reputation: a single, vertically integrated company manufacturing high-efficiency panels under the Maxeon cell brand and selling and installing them through its own dealer and direct-sales channels. By 2015 the company reported residential panel efficiency reaching 22%. For roughly a decade, pairing patent-protected module supply with a downstream installer network let the combined business capture value at both the manufacturing and retail-installation ends of the chain.

That structure began to unwind in 2019. Facing competitive pressure from lower-cost Asian manufacturers, and wanting to separate a capital-intensive manufacturing business from an asset-light services business, SunPower announced its intention to spin off manufacturing into what would become Maxeon Solar Technologies.

The name changed hands; the technology did not

Forty-one years from one company to three

1. 1985
   SunPower beginsA Stanford solar-cell spinout built around back-contact research.
2. 2002
   Cypress rescueCypress Semiconductor funds the move from laboratory work to volume manufacturing.
3. 2011
   Total takes controlTotalEnergies pays roughly $1.37 billion for the vertically integrated company.
4. 2020
   Maxeon splitManufacturing, IBC patents, and most non-US brand rights move into a separate company.
5. 2024
   US bankruptcy saleComplete Solaria buys selected SunPower assets and the US name from Chapter 11.
6. 2025-26
   TCL structure emergesTCL controls Maxeon and operates the separately acquired non-US SunPower business.

The split

Maxeon was born in 2020, and TCL was already in the building on day one.

The spin-off completed on 26 August 2020. SunPower shareholders received one Maxeon share for every eight SunPower shares held, and Maxeon listed on NASDAQ as MAXN, incorporated as a Singapore public company. Immediately after the distribution, Tianjin Zhonghuan Semiconductor (TZS, later renamed TCL Zhonghuan Renewable Energy Technology, or TZE) invested $298 million for newly issued Maxeon shares representing approximately 28.848% of the company on a fully diluted basis. TotalEnergies remained the largest single Maxeon shareholder at roughly 34.6%, while continuing to hold approximately 51.7% of the remaining SunPower Corporation.

The asset division was clean on paper. Maxeon retained the IBC patent portfolio, the Philippines manufacturing base, the non-US sales and distribution business, and rights to the Maxeon brand plus the SunPower brand in most markets outside the US and Canada. SunPower Corporation retained the US and Canadian residential installer and services business, US rights to the SunPower brand, and later the Blue Raven Solar and New Homes divisions. A supply agreement, under which Maxeon manufactured panels for SunPower's US and Canadian sales, held the two together commercially. Its termination in March 2024 matters to what follows.

review.solar

TZE's stake in Maxeon · 2020–2025

From minority investor to controlling owner

Aug 2020, at spin-off28.8%

initial $298m investment

Aug 2024, forward purchase closes>50%

TotalEnergies ceases to be a related party

Feb 202559.3%

beneficial ownership reported

Chart data

Series	Value	Note
Aug 2020, at spin-off	28.8%	initial $298m investment
Aug 2024, forward purchase closes	>50%	TotalEnergies ceases to be a related party
Feb 2025	59.3%	beneficial ownership reported

Why the installer side failed

SunPower Corporation filed for Chapter 11 in August 2024, carrying roughly $2.01 billion in debt.

Once separated from manufacturing, SunPower Corporation operated as a North American residential (and, for a period, commercial) solar installer. It sold its commercial and industrial installation divisions to TotalEnergies for $250 million in February 2022, and acquired Blue Raven Solar, a direct-to-consumer installer, for up to $165 million in October 2021. Its financial position deteriorated through 2023 and 2024: an earnings restatement of approximately $40 million in 2023, then a roughly 20% contraction in the US residential solar market through 2024 amid rising interest rates and industry oversupply. At filing, the company reported total funded debt of approximately $2.01 billion, split between about $483 million at the debtor level and roughly $1.53 billion in non-debtor project-financing facilities. Its own first-day court filing described an acute liquidity crisis with no viable stand-alone path forward.

SunPower Corporation and nine affiliates filed for Chapter 11 protection on 5 August 2024, in the US Bankruptcy Court for the District of Delaware, and were delisted from Nasdaq in the weeks that followed. On the same day it filed, the company had already signed an asset purchase agreement with Complete Solaria to act as stalking-horse bidder for its remaining operating businesses: a sale process, not a standalone reorganisation attempt.

The US brand today

A different company, the same name: Complete Solaria bought it for $45 million.

Complete Solaria's $45 million stalking-horse bid received bankruptcy court approval on 29 August 2024, and with no competing qualified bid at auction, a final sale order followed on 24 September 2024. The sale, cash plus assumed liabilities, transferred the Blue Raven Solar business, the New Homes division, the non-installing dealer network, and the right to use the SunPower name and trademarks. It closed on 30 September 2024, transferring roughly 1,000 employees; SunPower Corporation's amended Chapter 11 plan was confirmed on 18 October 2024 and took effect 14 November 2024.

Complete Solaria itself was a 2022 merger of two smaller businesses, Complete Solar and Solaria, backed by investors T.J. Rodgers and John Doerr. On 21 April 2025 it announced it would rebrand as SunPower, with the reclaimed SPWR ticker taking effect the following day; it formally changed its legal name to SunPower Inc. in October 2025. In September 2025 it acquired Sunder Energy, expanding its installation footprint from 22 to 45 US states, and it reported its first profitable quarter in four years in Q1 2025.

The company states this plainly, so it is worth repeating plainly: SunPower Inc. (Nasdaq: SPWR) is not the same legal entity as the SunPower Corporation that filed for bankruptcy in August 2024. It purchased a name, a trademark and a dealer network, and it explicitly did not assume customer contracts, leases, or installed systems predating the 30 September 2024 acquisition date. Rodgers' 2024 purchase price, $45 million, is a small fraction of TotalEnergies' $1.37 billion investment in the same name in 2011, a contrast that says something about how far the value attached to "SunPower" had fallen by the time of the bankruptcy sale, though the two figures were paid for very different things: a controlling stake in a whole vertically integrated company in one case, a specific set of brand and dealer-network assets out of bankruptcy in the other.

The manufacturer's own distress

While the US bankruptcy played out in Delaware, Maxeon was heading into a judicial management process of its own.

Maxeon's financial difficulty is separate from, and independent of, SunPower Corporation's US insolvency. Its first-half 2025 revenue was $39 million, down from $371.7 million in the first half of 2024, with shipments falling to 153.2 MW from 1,014 MW. A large share of that decline traces to US Customs and Border Protection detentions of Maxeon 3, Maxeon 6, and Performance 6 panel shipments, which Maxeon's own filings connect to concerns raised under the Uyghur Forced Labor Prevention Act. This publication has no basis to assess those underlying concerns and states only that Maxeon's own disclosures cite the detentions as a material factor in its 2025 results. The shipment denials also generated customer litigation: Maxeon's regulatory filings disclose lawsuits seeking damages exceeding $70 million over undelivered shipments.

In April 2026, Maxeon filed for judicial management in the Singapore courts, describing its own financial position as one of distress in that filing. The Singapore High Court ordered interim judicial management on 9 April 2026, and Nasdaq subsequently moved to suspend trading in Maxeon shares, which relocated to over-the-counter markets around 1 May 2026 as MAXNQ; a Nasdaq hearing-panel review of that determination was still ongoing as of this writing in July 2026. These are the facts on the public record. Judicial management is a court-supervised process with its own defined outcomes, and its resolution had not been determined at the time of writing.

Maxeon's own warranty documentation states that it "only provides limited warranty coverage for legacy SunPower panels installed before August 5, 2024, and self-registered with Maxeon prior to December 31, 2024." That coverage remains a legal obligation of Maxeon as a distinct entity, separate from SunPower Corporation's 2024 bankruptcy. Whether it can be met in full over its stated term now depends on the outcome of the Singapore judicial management process and any successor arrangement that emerges from it.

Who actually controls the technology

TCL controlled the manufacturer holding the IBC patents before the US bankruptcy was even resolved.

From its 28.8% stake at the 2020 spin-off, TZE grew its Maxeon holding steadily: by 30 August 2024, the same week SunPower Corporation filed for Chapter 11, its affiliate had closed a Forward Purchase Agreement pushing ownership above 50%, at which point TotalEnergies ceased to be classified as a related party of Maxeon under SEC disclosure rules. By 19 February 2025, TZE's Singapore subsidiary reported beneficial ownership of approximately 59.3% of Maxeon's outstanding shares.

From that position, TCL moved to acquire further assets directly. A term sheet announced 26 November 2024 and a definitive agreement signed 18 February 2025 saw TCL Zhonghuan acquire Maxeon's non-US sales subsidiaries and the SunPower trademark rights outside the United States, for total consideration of approximately $35.69 million: roughly $28.95 million for the equity interests and $6.74 million for the trademark rights. Separately, TCL Zhonghuan acquired SunPower Philippines Manufacturing Ltd, the manufacturing subsidiary, for approximately $58.6 million, closing 28 February 2025. In late March 2025, TCL Technology launched a new business unit, TCL SunPower Global, to operate the acquired non-US business. A TCL-TZE spokesperson stated at the time that Maxeon "will continue to function as an independent listed company on the Nasdaq," positioning the manufacturer and the new non-US sales and trademark business as operationally distinct, even though both ultimately trace to TCL ownership.

In Australia specifically, TCL SunPower Australia has since launched a product brand, TCL Solar. By May 2026, TCL Solar had been recognised with a SunWiz award as the third fastest-growing panel brand in Australia in 2025, with the company stating its market share had quadrupled in under twelve months, an award presented at the Smart Energy Council Expo on 7 May 2026.

The three-way split, plainly

Three companies, one name, divided along lines of geography and function.

As of mid-2026, the SunPower name sits across three genuinely separate entities:

SunPower structure · mid-2026

The shared name no longer identifies one counterparty

SUNPOWEROne consumer-facing name, split by geography, function, and legal responsibility

United States SunPower Inc.

Formerly Complete Solaria. A dealer and installer business using assets and trademarks acquired from the 2024 bankruptcy sale.

Outside the United States TCL SunPower Global

The TCL-operated sales and brand business holding non-US SunPower trademark rights, including Australia.

Technology and legacy panels Maxeon Solar Technologies

The majority TCL-owned manufacturer associated with the IBC patents and legacy Maxeon-manufactured panel obligations.

• United States: SunPower Inc. (Nasdaq: SPWR, formerly Complete Solaria), a dealer and installer business with no manufacturing operations of its own.
• Rest of world (EMEA, APAC and Latin America, including Australia): TCL SunPower Global, which owns the SunPower trademark rights in non-US markets and is backed by TCL's manufacturing and supply-chain scale.
• Manufacturing and IBC intellectual property: Maxeon Solar Technologies (Nasdaq/OTC: MAXN), under judicial management in Singapore as of July 2026, majority owned by TCL Zhonghuan, and still the entity holding the IBC patent portfolio and the Philippines manufacturing base (now under TCL Zhonghuan ownership as a separate transaction).

TCL Technology Group is a Chinese multinational conglomerate better known internationally for televisions and consumer electronics than for solar manufacturing. Its stated rationale for the SunPower non-US acquisition pairs its own vertically integrated manufacturing and supply chain with what the company describes as SunPower's technology history and patent portfolio. A TCL SunPower Global spokesperson has stated: "TCL SunPower Global has no ties to this company and is completely independent," referring to SunPower Corporation. That is accurate as a matter of corporate structure: TCL SunPower Global did not purchase assets from the bankruptcy estate, and its assets came from Maxeon, which was never part of the Chapter 11 proceeding.

What this means for your panels

Warranty claims now depend on knowing which of three entities is actually responsible.

Claim routing

Start with the failed component and installation date, not the shared brand name

1. 01
   Maxeon-manufactured panel

   Route the panel claim to Maxeon under its published eligibility and registration terms.

2. 02
   Pre-sale US installation work

   For systems installed before the 30 September 2024 asset transfer, begin with the original installer or an independent service provider.

3. 03
   Inverter or battery

   Use the original component manufacturer's warranty channel; those obligations did not transfer with the SunPower name.

4. 04
   Legacy Australian panel

   Begin with Maxeon. The newer TCL SunPower business is related by ownership but is not shown to have inherited Maxeon's warranty book.

Panel warranties (Maxeon-manufactured panels, the majority of SunPower-branded panels sold globally before 2024). Maxeon states it will honour warranties for panels it manufactured, subject to registration, and its documentation specifies coverage only for panels installed before 5 August 2024 and self-registered with Maxeon before 31 December 2024. Owners who have not registered should do so without delay, at maxeon.com. Maxeon's IBC panels installed from 1 January 2022 onward carry a 40-year product and performance warranty guaranteeing a minimum of 88.3% of rated power at year 40, on a maximum 0.25% annual degradation rate. That remains a legal obligation of Maxeon; meeting it in full over its stated term now depends on the outcome of the Singapore judicial management process.

Installation and workmanship warranty (US, pre-bankruptcy SunPower Corporation systems). These warranties are tied to an entity liquidated through Chapter 11. SunPower Inc. states explicitly that its asset purchase did not include any interest in customer PPAs, leases, or systems installed before 30 September 2024. Owners of pre-bankruptcy SunPower Corporation systems should contact their original installer where possible, or an independent solar service provider, rather than assume SunPower Inc. will service a pre-existing installation or claim.

Inverter and battery warranties sit with the original component manufacturer and are unaffected by either the SunPower Corporation bankruptcy or Maxeon's judicial management: Enphase, SolarEdge, Tesla and other manufacturers' own terms continue to apply directly, and Enphase has established a specific support pathway for former SunPower customers.

For Australian owners: SunPower-branded panels sold in Australia before 2024 were distributed through the Maxeon (non-US) network, since Australia sits outside the US market SunPower Corporation served directly. Warranty claims on those panels route to Maxeon, not to SunPower Inc. in the US. The more recent arrival of TCL SunPower Global and the TCL Solar brand does not, on the available evidence, mean that entity automatically inherits Maxeon's existing warranty book: TCL SunPower Global, TCL Solar and Maxeon are related through a shared ownership chain under TCL Zhonghuan, but they are distinct legal entities with separate obligations. Direct existing panel warranty enquiries to Maxeon in the first instance.

Does the technology survive

The cell architecture is not disappearing, even as its owner keeps changing.

Set against the corporate fragmentation, the underlying technology has a more straightforward story. The Maxeon IBC cell, contacts entirely on the rear surface rather than a printed front-side grid, remains among the most efficient and lowest-degradation silicon cell architectures in commercial production on manufacturer and independent review documentation. Conventional PERC and TOPCon panels from other manufacturers typically carry 25-year product and performance warranties by comparison to Maxeon's 40-year term. The IBC patent portfolio sits with Maxeon, and the manufacturing know-how is embodied in the Philippines facility, now under TCL Zhonghuan ownership. TCL SunPower Global has stated it will continue IBC and back-contact development alongside its own TOPCon line-up: it introduced back-contact modules built on Maxeon's IBC technology at Intersolar Europe 2025, and added a shingled TOPCon series in May 2026.

The technology's stewardship has moved from a standalone, increasingly capital-constrained Singapore-listed manufacturer to a subsidiary structure within a considerably larger Chinese industrial group with its own manufacturing and supply-chain scale. Whether that scale proves better suited to sustaining a premium, high-cost cell architecture than Maxeon's standalone balance sheet managed to be is a reasonable question, and an observation about structural fit rather than a prediction about future performance.

My read

This is not a decline story. It is a dissection.

The usual solar-brand narrative arc is rise, then fall. SunPower's does not fit it. What happened here is better described as a single integrated company pulled apart, over roughly four years, into three distinct value streams now owned, financed and managed separately: the US brand and installer relationship, now SunPower Inc.; the manufacturing technology and IBC patent estate, now Maxeon, under judicial management and majority owned by TCL Zhonghuan; and the non-US trademark and distribution business, now TCL SunPower Global, sitting inside a much larger Chinese consumer-electronics group.

Whether that dissection serves the underlying IBC technology better than a single integrated SunPower would have is genuinely uncertain, and I do not think the record yet supports a firm view either way. Three things are less uncertain. First, IBC cell architecture will keep being manufactured and sold in multiple markets under multiple owners, regardless of how the Singapore proceedings resolve. Second, the warranty position for owners of legacy SunPower- and Maxeon-branded systems needs active attention now, not a wait-and-see approach: register with Maxeon directly, keep your own documentation, and work out which of the three entities is actually responsible for a given claim before you need to make one. Third, two entirely unrelated companies trading under the SunPower name in different parts of the world, one American, one backed by a Chinese industrial group, neither able to speak for the other, is a real and ongoing source of confusion for consumers, and nothing in the current corporate structure looks likely to resolve that on its own.

Sources49 references

• Wikipedia: SunPower
• German Wikipedia: SunPower
• Matrix BCG: Brief History of SunPower
• d-nb.info: IBC cell architecture history paper
• businessmodelcanvastemplate.com: Who Owns Maxeon Solar Technologies
• Wilson Sonsini: SunPower to Spin Off Manufacturing Business
• SEC Form 8-K, SunPower Corporation (Aug 2020)
• Energy Connects: Total's SunPower completes spin-off of Maxeon (Aug 2020)
• SEC filing: TZE background disclosure
• SEC filing: Maxeon background note
• SEC Schedule 13D/A (Feb 2025)
• Epiq: SunPower Corporation Bankruptcy Case Overview
• ElevenFlo: SunPower: $45M Bankruptcy Sale to Complete Solaria
• ElevenFlo: SunPower Corporation Bankruptcy Case
• Reuters: US bankruptcy court approves stalking-horse bid for SunPower assets (Aug 2024)
• Bloomberg: SunPower wins approval to sell business to Complete Solaria (Sep 2024)
• StreetInsider: SunPower (SPWR) files Chapter 11
• Davis Polk: SunPower confirms and consummates Chapter 11 plan
• SunPower Acquisition Announcement & FAQ
• EnergySage: SunPower is Bankrupt. What Now? (Apr 2026)
• PV Magazine: US-based Complete Solaria rebrands as SunPower (Apr 2025)
• PV Magazine USA: SunPower rises again (Apr 2025)
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• PVTime: TCL Zhonghuan to acquire 100% of SPML for US$58.6 million (Feb 2025)
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• Enphase: Legacy SunPower System Support