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Granite State Solar

Granite State Solar would love the opportunity to design and install your Residential or Commercial Photovoltaic (PV) solar array, either on the roof or ground. We are happy to answer all of your questions and walk you through the process.
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In continuous operation since 2008, Granite State Solar is a 'no pressure' solar company that strives to satisfy our customers no matter what it takes - we do what we say we are going to do, every time.
We are a full service operation, offering numerous value-added services - our many years of experience, a Solar Log included with every installation to monitor your production for the sale of REC's, and a team of friendly installers that are all electricians and never sub-contracted.

We offer custom-fit solutions for just about every location, to drastically reduce or even eliminate your utility costs. We handle all of the paperwork, including permitting, engineering reports, building inspection, REC integration and the NH State rebate, so all you have to do to is sit back and enjoy your savings! Take advantage of 2.99% no money down financing and be sure to check out our many 5 star reviews on line!

We look forward to hearing from you!
Year Established
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Services Offered

  • Installation
  • Financing
  • General Contracting
  • Solar Repair & Maintenance

Associated product manufacturers

Associated financing companies

Workmanship Warranty

Workmanship is warrantied for 12 years. All of our panels carry a 25 year warranty.


All of our installers hold an Apprentice, Journeyman or Master Electrician card. We are licensed with the Joint Board of Licensure and Certification in the State of New Hampshire, license #12218M.


We carry full coverage insurance, including General Liability, Auto and Worker's Compensation.

Industry Certifications

  • Solar Energy Industries Association

Manufacturer Certifications

  • Platinum Installer
  • Sungage Financial Certified Partner

What Customers Are Saying

16 reviews
Average Rating 16 review(s)
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Hope you never need service

When my system was installed, it needed to know its precise location. The installers entered the wrong GPS coordinates. That took several months to fix. Then the next year, the system failed because a rodent chewed a cable. That took 2 months to fix. Now the system has not been producing for over 3 weeks. The phone rep had me flip breakers (which I had already done). Later a woman visited the site and flipped the breakers again. Today a rep called after he was supposed to be here to tell me he was not coming. He said the office would call to reschedule. When the office did not call, I called to be told she would not reschedule.

Posted by mma2000 on Jul 31, 2023
Awesome Install but Some Service Issues

GSS made the design and pricing easy and clear. After starting the project, they managed all paperwork smoothly. The installation was great, with careful and clean installers. The system looks good and seems to work well, but it was installed in October, a low solar production time, so we can't fully comment on its output. We're confident it will perform well. However, there's an unresolved issue for now ongoing for 5+ months since installation in mid-October 2022. We have an Enphase system. The consumption meter (CTs) were not properly installed, causing the Enphase app to misreport power data. This doesn't affect production but completely breaks real-time monitoring. We reported this issue shortly after going live. GSS did not show for the service appointment they booked with us to address this issue and we have experienced several significant delays waiting for some action to be taken. In January 2023 GSS could fix this via a software change, which didn't work. When we reported that at the end of January, we were told they'd get back to us in a month for next steps. Considering it's not affecting production, we understand our issue may not be a top service priority. Still, our customer service experience hasn't been great, and it makes us wonder how any future issues will be handled. ---- March 30, 2023 Update: I edited this review for readability. Also, our 2023 bills are tracking upwards in a major way, further confirming our confidence in the future performance of our system. Regarding GSS service, the consumption metering was finally fixed today with a service call. We are pleased to have everything working as designed now. Communication was poor throughout that waiting period and this should be a focus for future improvement. It takes a minute to compose an email or make a call.

Posted by nhsolarguy on Feb 11, 2023
GSS: Great company

We are going into our third summer with an 8 KWH rooftop system installed by Granite State Solar. The system is performing as promised, and the installation has been trouble-free, with the exception of one connection to a microinverter that worked loose, but was fixed quickly. Staff has always been responsive to my questions. We are now considering adding an Enphase 10 KWH battery to the system.

Posted by Geopacko on Mar 31, 2021
Solar installation

I was very pleased with this company,everything that was said was completed in a very professional manner. Every question answered quickly and politely. It was a pleasure doing bussiness the old fashioned way.

Posted by arthurjcushing on Sep 30, 2017
Pressure free easy going company

We found their no pressure approach perfect for such an important decision. They always responded promptly to our questions as well.

Posted by anthonyferenc3 on Aug 15, 2017

After previous failed attempts at going solar we were skeptical, but GSS made the process very simple and transparent. They handled all the paperwork with the State and power company which was a great help. The installation of our system was completed in just one day and the crew were all very friendly, professional and on task all day. A few days later the power company installed our net meter and we’ve been making power every since! The system is operating exactly as they explained it would and we couldn’t be happier with our decision to go with GSS. The Stark Family Grantham, NH July 2017

Posted by jonathan.h.stark on Jul 24, 2017
    • Solar PV
    • 6.6 kW
    Solar PV on existing house



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