SunPower Defective Microinverters Settlement

Settlement Structure: Claims Made

Active: Closed

Closed Settlement Statement:

According to court documents, the claim submission deadline has passed. Please contact the claims administrator if you have any questions.

Case Summary:

SunPower Corporation is paying $4.75 million to resolve a class action alleging it used defective microinverters in the photovoltaic modules it installed on homes. The complaint claimed that the parts degraded prematurely and caused the solar panels to produce less power than expected, causing owners to pay more for energy and possibly lose incentives, such as Solar Renewable Energy Credits. It also claimed that when SunPower did try to repair or replace the defective parts, it at times caused damage to roofs and homes.

Docket Number:


Company: SunPower Corporation

Filing Deadline: March 10, 2022

Class Period: July 1, 2015 to December 31, 2016

Objection Deadline: January 10, 2022

Exclusion Deadline: January 10, 2022

Final Approval Hearing: March 24, 2022

Proof of Purchase:

You do not have to provide proof.


You may be eligible if you are a US resident and you bought, via a cash or financed transaction, one or more SunPower Modules with one of the defective factory-integrated microinverters for your home, and you currently own or formerly owned a hoe on which the SunPower Solar modules are installed. The settlement does not cover solar modules that are leased.

The microinverters at issue are factory-integrated Generation 3.0 microinverters with serial numbers beginning with 4140515xxxx and 4140516xxxx, made by SunPower between July 2015 and December 2016 for residential use. The solar modules covered by this settlement are included in SunPower Equinox systems with panel model numbers SPR-E20-327-C-AC, SPR-E19-320-C-AC, SPR-E18-305-C-AC, SPR-X22- 360-C-AC, SPR-X21-350-BLK-C-AC, SPR-X21-345-C-AC, SPR-X21-335-C-AC, SPR-X21-335-BLK-C-AC, and SPR-X20-327-BLK-C-AC.

Typical Settlement Amount:

Benefits: (1) Cash payment from the net settlement fund, allocated according to the number of the solar modules at issue installed on your home. The average estimated payment per home is $173.52. (2) Retrofitting of defective microinverters: SunPower has already installed new microinverters in covered solar modules and expects to complete most of the replacements by June 30, 2021. (3) SunPower will also maintain a temporary customer care program to handle inquiries and schedule microinverter replacements.

Total Settlement Amount: $4,750,000

Class Representative Proposed Incentive Fee:

Up to $10,000 each

Law Firm:
Berger & Montague

Claim Form: Microinverters Settlement Claim Form

Case Name: Weiss, et al. v. SunPower Corporation

Settlement Website: Microinverters Settlement Website

Claims Administrator:
AB Data, Ltd.

Claims Administrator Contact Information:

Microinverter Settlement
c/o A.B. Data, Ltd.
P.O. Box 173052
Milwaukee, WI 53217

Tags: Defective Product, Microinverter, Solar Panels/Solar Energy