SunPower warranty for solar
The short version
SunPower covers solar in full for 10 years, then keeps solar panels and microinverters covered to 25 years. That full coverage is longer than most of the 14 brands we compared, which typically cover 1 year in full. You don't need to register to get this coverage.
From SunPower's published warranty, checked October 2026.
What's covered
Full coverage: everything, parts and laborPartial coverage: some parts only, you usually pay labor
Purchase5 yrs10 yrs+Full: 10 yearsPartial: to 25 years
- Full coverageInstallation workmanship10 years
- Full coverageService and claim handling2 years
- Partial coverageSolar panels and microinverters25 years
Good to know before you buy
- After the first two years, you pay the equipment maker's claim fees, though SunPower helps with the process.
- Your panels may be made by Qcells, REC or Waaree, each with its own warranty.
- A production guarantee applies if output falls well below projections (terms apply).
How other brands compare for solar
- 2. Sunrun65/100 · Full: 25 years
- 3. Tesla Energy65/100 · Full: 25 years
- 4. Enphase60/100 · Full: 25 years
- 5. GAF45/100 · Full: None
- 6. Qcells35/100 · Full: None
Where you buy it matters
How long stores give you to return it
Longest return window first, for solar.
- Lowe'sMost items90 days
- The Home DepotMost items90 days
From each store's published return policy, using its rule for solar where it has one. Member and holiday extensions aren't counted. Check yours before you buy.
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