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Granite State Solar

Solar energy company · Bow, NH

What the listing shows you

4.8★

228 Google reviews

What it doesn’t

4%

rated 1–2★

typical in the Manchester area, 0%

Newest review held

Aug 2026

newest held review this month

Google's rating breakdown · all 230 reviews

Rated 1–2★
4%
typical in the Manchester area, 0%
Posted an update
8 months ago
the company posting to its own Google profile
Replies to reviewers
72%
of the 230 reviews we hold

Its one and two star share is 4 points above the typical installer in the Manchester area. Across New Hampshire, 8 of the 43 installers whose breakdown Google has published carry a higher share than this one.

The percentages are Google’s own arithmetic over every review it holds, not a sample we assembled. Separately we hold 230 review texts for this company, quoted below. Google publishes review ages rather than dates, so every date here is approximate.

On the New Hampshire ranking

No. 4 of the 12 rankable records in New Hampshire →

Ordered by the share of one and two star reviews, weighted by how many reviews stand behind it. It ranks review records, not workmanship.

Every company we hold in the Manchester area, on one axis

0% rated 1–2★10%

Each mark is one company we hold in the Manchester area whose Google breakdown has been read, placed by its share of one and two star reviews. Granite State Solar is the red one. The amber line is the middle of that set, which includes suppliers and maintenance businesses as well as installers.

What reviewers said

  • 2★ · around October 2025

    We did our install in August 2022. Overall performance is good. The system stops reporting often so that's annoying. I am more disappointed with the way the install went and how it was misrepresented in the beginning.. we wanted the install to be place on a huge ledge overlooking our farm. Great use of an area with no other real value. We were told they could not install on ledge. So we placed it elsewhere and we're then charged extra to supposedly drill "through ledge". Hmmm??? This area is in a field where there is no ledge but there are field stones. If you use GSS I would make sure you get
  • 1★ · around August 2025 · the company replied

    I unfortunately can’t recommend them. Communication was terrible. But worse, they initially miswired the monitoring system such that Eversource refused to connect to it. Then after they “fixed” it, the system was wildly misrepresenting how much electricity I was producing, using and exporting back out to the grid. They blamed everyone from Eversource to the existing wiring to the weather for their failure to deliver the system they’d sold me. Part of their sales pitch was these incredible warranties and how they “back” their work. But at one point they made the mindblowing statement that there
  • 2★ · around August 2024 · the company replied

    - It costs $2,000 more if you pay with financing. - Why? there is zero administrative burden involved. - I was told there is little to no flexibility in the scheduling at each step of the way, then they would call and need to reschedule, the first time the morning of, the second time the night before. Be prepared to burn through your paid time off to accommodate what works best for them. - Energy consumption monitoring was not included even though the Enphase combiner supports it. It costs less than $100 to clip on the current transformers, wish they would have told me up front that the monito
  • 5★ · around August 2026

    The generator installation and operational test were just successfully completed. Great so far. I'm not wishing for bad weather but I am anticipating its first real use. I'll keep you posted. Great job!
  • 5★ · around August 2026 · the company replied

    The installation was great and installers nice and professional clean up afterwards would have them back in a instant
  • 5★ · around August 2026 · the company replied

    When looking into having a home solar and battery backup system installed, we researched many companies through the internet, made use of Energy Sage, constructed a comparison spreadsheet (equipment costs, warranties, output ratings, etc.) and invited the two top companies to visit our home and make a presentation. We found the Granite State Solar team to make the best proposal as they thoroughly answered all our questions, used quality technology, and were reasonably priced – not the least expensive nor the most expensive. We decided on a 24 panel array with the Enphase IQ8MC microinverters w

Reviewer names are not published here. Negative reviews are shown first because they are the ones a listing hides, not because they are more representative.

What reviewers keep mentioning

  • professional team 61
  • pricing 39
  • solar panel installation 38
  • permitting 22
  • installation team 19
  • quick installation 12
  • responsive team 10
  • electric bill reduction 9
  • solar system performance 8
  • battery backup 6
  • solar advisor 3

Topics Google derives from the review text, with how often each appears. A frequent topic is not a good one: “price” turns up in praise and in complaints alike.

What the company says about itself

Taken from its own website. We have not checked any of it, and a sentence on a website is not evidence.

  • Established

    “installer, serving the Granite State since 2008. GSS delivers clean energy solutions…”
  • Years in business

    “Having served the Granite State for over 17 years, Granite State Solar is a trusted…”

Elsewhere

  • It is also reviewed on the Better Business Bureau and ConsumerAffairs. Worth reading before you sign anything: those are a different crowd, and the complaints that reach the Better Business Bureau rarely reach Google.
  • It posts on Instagram, LinkedIn and Facebook. A page that stopped posting years ago tells you something a listing will not.

When they say they are open

Sunday
Closed
Monday
8:30 AM to 5 PM
Tuesday
8:30 AM to 5 PM
Wednesday
8:30 AM to 5 PM
Thursday
8:30 AM to 5 PM
Friday
8:30 AM to 5 PM
Saturday
Closed

As Google published them when we last read the listing, not a live check. Ring before you drive anywhere.

Who Google shows alongside them

Google’s own “people also viewed” set, in Google’s order. It is Google’s comparison, not ours.

Other installers around Manchester

What we don't know

  • The date above is the newest review we hold, which is not necessarily the newest that exists — we hold a large share of Google's reviews, not all of them.
  • We do not verify licences, insurance or bonding. Nothing here has been checked against a state licensing board.
  • We cannot tell you what an installation costs, and we hold nothing about the equipment they fit.

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