Sunrun vs SunPower: Head-to-Head After the 2024 SunPower Bankruptcy
SunPower filed for Chapter 11 in 2024. Complete Solaria acquired the solar business and continues serving California customers under the SunPower brand. Here's how the two compare in 2026.
Key Differences
- SunPower = premium Maxeon panels. Industry-leading 22%+ efficiency and 40-year performance warranty. Best-in-class panels if you care about maximum watts per square foot.
- Sunrun = broader panel options, mid-tier pricing, PPA/lease availability. No premium panel line.
- Post-bankruptcy SunPower (now under Complete Solaria) has reaffirmed warranty continuity for existing customers but remains smaller and less financially stable than pre-bankruptcy.
- Sunrun is publicly traded, profitable, and the largest residential solar company in the US with no comparable financial risk.
When to Choose SunPower (Complete Solaria)
- You're a cash buyer who wants the highest-efficiency panels.
- Your roof has limited area and you need to maximize kW-per-square-foot.
- You value the industry-longest 40-year Maxeon panel warranty.
- Premium aesthetics matter (all-black panels, minimal visible hardware).
When to Choose Sunrun
- You want a $0-down PPA or lease (SunPower focuses on cash and loan).
- Warranty-honor-risk concern from the SunPower bankruptcy matters to you.
- You value a larger installer with nationwide service presence.
- Your roof has standard area. The SunPower efficiency premium doesn't pay off without a space constraint.
The Warranty Question
Complete Solaria has publicly committed to honoring existing SunPower customer warranties, and Maxeon (the panel manufacturer, a separate publicly traded company) directly honors its panel warranties regardless of installer status. That said:
- Panel warranty: Maxeon direct, stable.
- Workmanship warranty: Complete Solaria as assumed obligations — newer operation, less track record.
- Production guarantee (if included in your contract): verify specifically with your representative.
For new 2026 installs, ask your SunPower rep for explicit documentation of each warranty component and which entity is responsible.
The Bottom Line
For most California homeowners: Sunrun is the lower-risk pick in 2026, especially for PPA or lease buyers. SunPower (Complete Solaria) still makes sense for cash buyers who specifically want Maxeon's efficiency and warranty advantages — but verify warranty terms carefully at contract signing.