Ratings Methodology for Solar Panel Installers
NerdWallet’s overall ratings for solar panel installers are weighted averages of ratings in the following categories:
Financing terms.
Responsiveness to service requests.
Customer satisfaction.
Number of years in solar.
Pricing transparency.
Warranty coverage.
Customer service options.
Data collection and review process
The final output produces star ratings from poor (1 star) to excellent (5 stars). Ratings are rounded to the nearest half-star.
Information updates
Factor weightings
The review team
The combined expertise of our team is infused into our review process to ensure thoughtful evaluation of products and services from the customer's perspective.
Financing terms
If the installer doesn’t respond to requests for information about financing terms and the terms aren’t found online, we assume the options above aren’t offered.
The lowest-scoring installer offers none of these options.
Responsiveness to repair requests
Customer satisfaction
Number of years in solar
Pricing transparency
Warranty coverage
The lowest-scoring installers offer one or none of these types of warranties.
Customer service options
The lowest-scoring installers meet one or none of these criteria.
Regulatory or legal action
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