GuaranteeCheck
How it works
SunStrong Management Sunrun Renewbrook
Pricing FAQ
Check for free
How it works
Servicers
SunStrong Management Sunrun Renewbrook Pricing FAQ Check for free
For homeowners with Sunnova, SunPower, or PosiGen solar leases

Is your solar company shortchanging you?

When your servicer went bankrupt, your production guarantee almost certainly survived — even though SunStrong, Sunrun, and Renewbrook aren't volunteering to pay it. We check your actual output against your lease's guarantee, for free, and draft the claim letter if you're owed money.

Run my free diagnostic See how it works

Most true-up periods show nothing owed — we tell you either way, for free. $99 only if we find real money on the table.

Servicers we cover

Serviced by, after the bankruptcy:

SunStrong Management Sunrun Renewbrook
How it works

Four steps, most of it done for you.

See the full walkthrough, with a worked example, on the How it works page.

01

Tell us your servicer & lease terms

Your guaranteed production, true-up rate, and interval — straight off your own lease or PPA.

02

We pull your real production data

Connect Enphase directly, or upload a SolarEdge CSV — whichever monitoring platform your system uses.

03

We tell you if you're owed money

Honest either way — most true-up periods show nothing owed, and we say so plainly when that's the result.

04

We draft your claim letter

Servicer-specific, written in your own voice, ready for you to sign and send yourself.

Pricing

Free to check. You only pay if there's real money to claim.

See the full side-by-side comparison on the pricing page.

One-time check
Free diagnostic

$99 only if we find a shortfall and you want the letter.

  • Full diagnostic against your lease terms
  • Honest result either way, no charge to find out
  • Claim letter + evidence packet, $99 only when there's a real shortfall
Recommended
GuaranteeCheck Plus
$3.99/mo or $29.99/yr

Unlimited re-checks, no $99 fee, ever.

  • Unlimited diagnostic re-checks
  • Auto re-run near your true-up date
  • Claim letters included at no extra fee
Trust

We're not a collections agency.

GuaranteeCheck is a self-help tool. The claim letter it drafts is written in your own words, for you to sign and mail yourself — we never contact your servicer on your behalf, and we're never a party to your claim. You stay in control of the whole conversation.

BBB complaints
Multiple documented BBB complaints describe SunStrong Management refusing or ignoring homeowners' shortfall reimbursement requests, even when asked directly.
Source: BBB complaint records, SunStrong Management (Austin/Houston profiles)
Not automatic
Sunrun's own agreement language says a shortfall refund should be issued automatically — but public complaint records show it often isn't, without a homeowner following up.
Source: NY Dept. of Public Service filing; Sunrun BBB/Trustpilot complaint records
FAQ

Quick answers before you dig further

Does my guarantee survive the bankruptcy?

In the general case, yes — obligations were transferred to the current servicer through the bankruptcy sale process, not discharged. See the full answer on the FAQ page.

Is this a collections service?

No. GuaranteeCheck drafts a letter you send yourself, in your own name — we're never a party to your claim and never contact your servicer directly.

What if I don't have SolarEdge admin access?

Common for orphaned systems — the original installer often held the admin account. There's a manual-entry fallback so this doesn't block you.

See the full FAQ →

Check your guarantee — it's free either way.

No charge to find out. $99 only if we find a real shortfall and you want the claim letter.

Run my free diagnostic