GuaranteeCheckServicers
Who is my solar servicer now?
A dated table of who now services SunPower, Sunnova and PosiGen leases.
BasicsWhat is a solar production guarantee true-up?
Definition, cycle, surplus carryover and a hypothetical worked example.
How-toHow to check whether your production guarantee was met
The step-by-step comparison of actual output against your guarantee.
BankruptcyDid my Sunnova production guarantee survive the bankruptcy?
What the research found about guarantees after the bankruptcies, and the edge case.
SunStrongHow to contact SunStrong about a production guarantee shortfall
Contact routes, what to document and when to escalate.
SunrunSunrun performance guarantee refund not received
What the BrightBuy with Protection Plus contract language says, and what is unconfirmed.
MethodologyMethodology: how GuaranteeCheck's true-up math works
The inputs, formula, assumptions and limits behind the calculation.
Guides are reviewed against GuaranteeCheck's own research and dated on each page. They are general information for homeowners, not legal advice.
Not legal advice. Not affiliated with Sunnova, SunPower, PosiGen, SunStrong, Sunrun or Renewbrook. You send the letter yourself.