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Solar Installer GuildUnited States · independent

Solar installers in and around Washington, DC

10 companies are returned for this town by Google, categorised as solar businesses. Some are based here and some nearby; each row says which. Each is shown with the same reading: Google’s full rating breakdown, with the one and two star reviews at the left of the bar where you cannot miss them.

Jump to the 9 best-reviewed installers here ↓

10 installers around Washington, by 1–2★ share

0% rated 1–2★40%
Typical here
2%
rated 1–2★
Worst here
33%
of that company’s reviews
Gone quiet
0
no held review in two years
Breakdown read
10
of 10 listed

Every company we hold for Washington

1–2★3★4★5★gauge 0–20%typical here, 2%

Ordered by how much we can tell you about each company, which is not an order of quality and is not a ranking. The amber tick on each bar is where the typical installer in Washington sits, so a bar whose red crosses it has more one and two star reviews than is normal around here.

Best-reviewed solar companies around Washington

The 9 installation businesses from the list above that can be ranked, ordered by their share of one and two star reviews and how much evidence stands behind it. Suppliers and panel-cleaning services are listed above but ranked nowhere, and a company needs a published breakdown, enough reviews and a recent one to appear here at all.

How this list is ordered, and what it is not

By the share of Google reviewers who gave one or two stars — discounted for how much evidence there is behind it, so a long clean record beats a short one. That is an ordering of review records, not of workmanship: nobody here has inspected an installation, checked a licence, or spoken to a customer. A company can have a clean record and still be wrong for your roof.

A company appears only if it is one Google files as an installation business, Google publishes a star breakdown for it, that breakdown covers at least 25 rated reviews — a perfect record over four reviews is noise, not evidence — and someone has reviewed it inside the last 2 years, because a company nobody has reviewed since then may no longer be trading. Fail any one of those and the company is left off this page, never off the site: it stays on the Washington listing with everything we hold on it.

Two details worth knowing. Panel-cleaning, repair and equipment businesses are ranked nowhere on this site, though they are listed on it: a panel wash costs a hundred dollars and almost never goes wrong, an installation costs twenty thousand and carries a twenty-five year warranty, and putting their review records in one order would flatter the wrong trade. And the order uses the upper end of the 95% confidence interval on the share rather than the bare percentage, so a spotless twenty-five reviews does not outrank a near-spotless six hundred — both figures are on every row, so you can check it.

Widen it to the whole state on the District of Columbia ranking.

Elsewhere in District of Columbia

All 7 places in District of Columbia

What this page is not

It is not every solar installer in Washington. Google surfaces a limited number of businesses per place, so this is a sample rather than a register, and roofers and electricians who fit panels under an older trade category are missing entirely. It is also not a list of businesses with a Washington address: it is who Google returns for this town, and a row whose own address is somewhere else says so. We verify no licences and check no insurance.