Independence
Our editorial work is independent of our advertising. Ratings and rankings are assigned against published criteria, and no advertiser sees or influences a score before publication. See how we make money for the full picture.
How we research
We work from primary sources where we can: utility and government program pages, regulatory filings, manufacturer specifications, and installer contracts. We date our claims because programs and rates change, and we revise pages when they do.
How we rate installers
Where we publish a verified installer profile, the rating reflects documented criteria: licensing and electrical certification, workmanship warranty, equipment tier, install track record, and pricing transparency. We do not publish a star rating for a company we have not verified, and a 'verified' label links to the evidence behind it.
Honesty about uncertainty
We do not invent statistics, reviews, awards, or certifications, and we do not guarantee savings. When a figure is an estimate or a range, we say so and show the assumptions. When we are not sure, we tell you.
Corrections
We fix mistakes. If you spot an error, email [email protected] and we will review it. Substantive corrections are made promptly and the update date is changed.
Conflicts of interest
Where a commercial relationship exists with a company we write about, it is disclosed. Safety and accuracy always take priority over a referral.