The Equation Series
Menu

Energy · Profile from Energy Research Companion

SunPower

The Silicon Valley company that made the world's most efficient mass-produced solar cells and still went bankrupt as a residential installer. Founded in 1985 by Stanford professor Richard Swanson to commercialise back-contact silicon cells, SunPower was rescued in 2002 by Cypress Semiconductor and its CEO T.J. Rodgers, listed on Nasdaq in November 2005, became a utility-scale developer through PowerLight (2007), and was majority-owned by Total (now TotalEnergies) from June 2011. It spun off its manufacturing as Maxeon in August 2020, kept a US business that sold rooftop systems through dealers and financed them with its own loans and leases, and filed for Chapter 11 on 5 Aug 2024 after California's NEM 3.0, higher interest rates, a 2023 restatement and covenant breaches. Complete Solaria bought its brand and some assets for ~$45m and renamed itself SunPower in April 2025 — under T.J. Rodgers, the man who had saved the original company 22 years earlier. It is the lead case of the book's chapter 16: a premium product inside a route to market and a capital structure that it did not control.

At a glance

Founded
1985, by Richard Swanson (Stanford electrical-engineering professor) with colleagues from his Stanford lab, to commercialise point-contact back-contact silicon cells (reported; verify co-founders and original name)
Headquarters
Sunnyvale, then San Jose, California; later Richmond, California (verify); manufacturing in the Philippines (from 2003–04) and Malaysia (from 2010) until Maxeon's spin-off
Ownership / structure
Private 1985–2002; Cypress Semiconductor majority (2002), full ownership (2004, verify); Nasdaq IPO Nov 2005 (Cypress ~85% afterwards, SEC 10-K); Cypress distributed its shares Sep 2008 (verify date); Total ~60% from Jun 2011 (tender at $23.25, ~$1.38bn); from Sep 2022 the Total stake sat in Sol Holding LLC, 50% less one unit owned by GIP (SEC filings); Chapter 11 5 Aug 2024 and liquidation
Leadership
Richard Swanson (founder; president to 2010, verify); Tom Werner (CEO Jun 2003–Apr 2021; returned to lead an interim Office of the Chairman Feb 2024); Peter Faricy (CEO Apr 2021–26 Feb 2024) (company, reported)
Segment
Solar cells and modules (to 2020); utility-scale and commercial systems (2007–2022); residential solar sales, installation and finance (dealers, Blue Raven Solar, new homes)
Scale
Revenue peak ~$3.0bn (2014, verify); 2023 revenue ~$1,685m and GAAP net loss ~$247m (company, Feb 2024); one of the largest US residential brands, with hundreds of thousands of customer systems (reported; verify count)
End state
Chapter 11 in Delaware 5 Aug 2024; Blue Raven Solar, the new-homes business and the non-installing dealer network sold to Complete Solaria for ~$45m cash (stalking-horse bid, reported; closed ~30 Sep 2024, reported); plan monetising the remaining assets confirmed 18 Oct 2024, effective 14 Nov 2024 (Davis Polk; Bloomberg Law); affiliate cases closed by final decree 18 Feb 2025 (reported); Complete Solaria renamed SunPower, ticker SPWR from 22 Apr 2025 (company)
Signature moves (incl. failures)
Founding on back-contact cells (1985); the Cypress rescue and Manila fab (2002–04); IPO and Cypress spin-off (2005–08); PowerLight (2007); Total's majority stake (2011); the 8point3 yieldco (2015); the Maxeon spin-off (2020); the 2023 restatement and covenant breaches; Chapter 11 and the Complete Solaria sale (2024)

9 strategic moves analysed

Each one gets a full strategy file in the companion: context, the decision, the financing, what happened, and the lesson.

  1. 1985

    Founding and Back Contact Cells

    Founding / technology bet

  2. 2002

    Cypress Rescue and the Manila Fab

    Financing (strategic investor rescue) / construction (first volume cell fab)

  3. 2005

    IPO and the Cypress Spin Off

    Spin-off or IPO

  4. 2007

    PowerLight Acquisition

    Acquisition or merger (vertical integration downstream)

  5. 2011

    Total Majority Stake

    Acquisition (sale of a majority stake to a strategic owner by tender offer) / financing (parent credit support)

  6. 2015

    8point3 Yieldco

    Financing (yieldco IPO) / later divestment

  7. 2020

    Maxeon Spin Off

    Spin-off / strategy pivot (exit from manufacturing)

  8. 2023

    Restatement and Covenant Breaches

    Restatement / financing crisis (failure)

  9. 2024

    Chapter 11 and the Complete Solaria Sale

    Restructuring or bankruptcy (failure) / divestment