How this works

An average rating hides its own shape. Two companies both rated 4.5 can have very different histories: one with steady four-star work, one with a wall of five-star reviews and a hard core of furious customers. Google publishes the breakdown per star across every review it holds, and that is what we show. It is Google’s arithmetic over Google’s full count, not a sample we assembled.

A share on its own is unreadable. 2% is the middle of the whole US market, but a market with three installers and a market with sixty do not look alike, so every company here is also measured against the typical installer in its own town or state. That comparison is the amber tick on the bar, and it is the one thing this site does that a listing cannot.

We only compare against markets where Google has published enough breakdowns to have a middle. Below eight companies we show no comparison at all rather than a median of three.

A company being reviewed this month is a company that still exists. 1,360 of the 6,895 companies listed here have no review newer than two years in what we hold. That is not proof they have gone — and it is not proof nobody has reviewed them since, because we hold most of Google’s reviews for a company rather than all of them — but it is worth knowing before you accept a twenty-five year promise from one of them. Google publishes review ages rather than dates, so we say the month and mark it approximate.

Every company Google categorises as a solar business in the United States. That rule is simple and it is imperfect: it includes equipment suppliers and panel-cleaning services, and it leaves out roofers and electricians who fit panels but are categorised under their older trade. We would rather state the rule than quietly curate the list.

It is also a sample, not a register. Google surfaces a limited number of businesses per place, so no town here holds every installer working in it.

The best-reviewed pages are the only place on this site where companies appear in an order that means something. They are sorted by the share of reviewers who gave one or two stars, discounted for how many reviews stand behind it, so a spotless twenty-five does not outrank a near-spotless six hundred. To appear at all a company must be one Google files as an installation business, have a published star breakdown, carry at least 25 rated reviews, and have been reviewed inside the last 2 years.

That is an ordering of review records, not of workmanship. We have not inspected an installation, checked a licence or spoken to a customer, and a company with a clean record can still be wrong for your roof. Nobody is left off a ranking for any reason except missing one of those two bars — every company we hold is on its town and state page whatever its record looks like.

If you run a company listed here you can claim its page. It is free, a person reviews the proof by hand, and it makes you the listing’s verified contact: corrections from you are read as the owner’s.

It buys nothing else, and that is the point. A claim cannot change a rating, hide a review, move a company up a list, or take a page down. If it could, every number here would be worth exactly what an installer was willing to pay for it.

• We do not verify licences, insurance or bonding. Nothing here has been checked against a state licensing board, and no company on this site carries a badge saying it was.
• We do not rank companies by quality, and no company can pay to appear, move up, or be removed.
• We do not sell leads, run ads, or take anything for a click or a call.
• Where a company states something about itself, we quote it and say it came from their website. That is not the same as it being true.
• We do not publish reviewer names.

What an installation costs. What equipment a company fits. Whether its licence is current. Whether the warranty it advertises is underwritten by anyone. Whether the company that installed your neighbour’s system is the same legal entity that trades under that name today. If a page here looks like it is avoiding one of those questions, it is, because we do not know the answer and will not guess.

If something here is wrong about your company, write to support@solarinstallerguild.com and tell us which page and what is wrong. A person reads it. We will correct a factual error and we will not remove a page because the numbers on it are unflattering — they are Google’s numbers, and they are the same ones your customers see.

Readings last rebuilt 2026-09-23 · admission rule: Google category names solar (rule B) · 6,895 companies · 6,881 with a published breakdown

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