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Sunrun performance guarantee: how to check a payment

Last reviewed: October 12, 2026. The guarantee wording comes from Sunrun's own page, linked below.

Short answer

Sunrun's guarantee page says it guarantees that your system will produce at least 90% of estimated production over its lifetime and will pay the difference if it produces less, with the full terms in your customer agreement. Whether and when a payment is due for you depends on that agreement, so start there.

What does Sunrun state about its guarantee?

Sunrun's guarantee page says the solar performance and battery health guarantee is available with the Subscription or Protection Plus plans, is not available in Florida, and varies in Illinois. It tells customers to see their customer agreement for the full terms.

What should I do to check my Sunrun guarantee payment?

  1. Find the performance guarantee section of your Sunrun agreement. Note how the guaranteed amount is measured, over what period, and how a payment is calculated and delivered.
  2. Check whether a shortfall exists for the period your agreement describes.
  3. If your check shows a shortfall, write to Sunrun using the contact details on sunrun.com or in your account, quote the provision of your agreement, and attach your numbers.
  4. Record the date of every contact and keep copies. Follow up in writing.

Sunrun states its guarantee over the system's lifetime, which may not match the period-by-period calculation GuaranteeCheck does, so read how your agreement measures it. We do not know which plan or version of agreement you have. More on this company is on the Sunrun page.

Want the math run for you? See how the free check works, or see pricing. Common questions are answered on the FAQ.

Check my production

Checking costs you nothing. Find out if a credit is due.

$0

due to check. $99 only if a shortfall is found.

Check my production