We are your solar
consultants from your
first site evaluation to
maintenance after your
system is installed.


Responsive, attentive
to detail, efficient, and
friendly. These are just a
few words to describe
our team.


Our knowledgeable
installers will walk you
through the process and
answer any questions
along the way.

Want More?

See what people have to say about us on our Google Reviews.


"We couldn't have had a better experience than what we had with Granite State Solar. Their salesman, Eric Kilens was highly knowledgeable and was able to answer all of our questions. Tanya at the office was always professional and efficient with the details of our sale and installation. The crew that installed our system were also polite and highly efficient. They installed our system in one day. We were so happy with the beautiful array of panels. It looks great, and we are already saving money. Best of all, we feel we are doing our part to positively impact the environment with this installation. I highly encourage those who are interested into a solar energy system for their home to consider Granite State Solar. At the least you should include them as one of the quotes you receive. If you like what you see, please tell them that "Donna and Jay Fallon sent you!""

Donna & Jay Fallon


"Granite State Solar carefully listened to our desired goals and concerns and designed a system that not only suited us perfectly, but exceeded our expectations. Their installation crew was both personable and professional. Along the way the office staff fielded questions immediately (thank you, Tanya) and the final walk through with our solar advisor gave us a thorough understanding of all aspects of our new solar operation (thank you, Eric). This is a good company to do business with."



We have nothing but praise for GSS. Eric Kilens worked with us from the beginning to the end. He provided professional services that went beyond sales and was available whenever we needed him. Our site was difficult--in the hills, one mile up a dirt road, over ledge and then along a ragged “path” to the south-facing slope site. The slope was densely wooded with second-growth trees that required two cuts. The installation team was excellent and it was a tough job. The cement as well as all the installation equipment had to be hauled over the rough terrain.

We’d like to give a special thank you to the electricians, Troy and his team, who in addition to their excellent work called out an unrelated safety issue at our camp that has since been fixed. Months later, Eric has helped us through problems (not of GSS’s making) with our meter as well as selling our SRECS.

All the GSS people we worked with were not only very professional but congenial as well. We suspect that the job cost more than GSS’s estimate but they kept to their quote.
We highly recommend GSS."

The Strongs


"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

Granite State Solar

"I would give ten stars if I could! I cannot say enough about this wonderful company. From beginning to end, informative, affordable, professional! Everything was done when and how they said it would be. I would highly recommend Granite State Solar to anyone who is thinking of going solar. We have went from $400 a month to Eversource to $8.00!! Could not be happier!!"



"I started looking at rooftop solar panel installations in January (for reference, it is currently May). They’ve been dropping in price so much lately that I figured it was time to see just how much money they could actually save (don’t worry, I’ll answer this for you at the end). I contacted a few of the highly-rated companies out there for quotes and consultations, GSS being one of them. After speaking with them all and comparing their offers, their online reviews and the behavior of the associates they sent out to my house, I decided to go with GSS. The rest of the review is my story working with them but if you want the summary: these guys are an incredibly professional team that really know their stuff and work with you every step of the way. I have zero regrets about choosing them and I would absolutely recommend them to everybody looking to go solar.

Here are the details about my experience with them.
I called GSS up and explained my situation: “I’m interested in rooftop solar, I have some electric cars that eat a ton of power and I want to charge them with renewable energy so I need a pretty big array.” Eric Kilens was the rep that responded to my call. He came out and took some standard measurements; roof size, angle, azimuth, tree cover… the usual stuff. That took all of twenty minutes. He then proceeded to stick around and talk to me for an extra half hour about the whole process, the technology behind solar, the net metering policies in New Hampshire, electric vehicles, and just about every other relevant topic that came up. I’m the kind of guy that wants to know everything that’s going on and he was more than happy to answer. This extended past the initial consult because after each company got in touch with me I proceeded to flood their inboxes with more questions. Eric was the only one that didn’t eventually get fed up with me. He responded quickly to each one – usually that same day or the day after. If he didn’t know the answer, then he knew who to ask. He got me in touch with other experts at GSS who traditionally work behind-the-scenes like Alec the warehouse manager or one of the owners when I had detailed questions about panel specs or inverter choices.

Eric and I went back and forth quite a bit about array design, number of panels, brand, power rating, and even the microinverter size to go with them. It wasn’t just a “here’s what we’re going to do, take it or leave it” kind of situation… the whole team was very flexible and accommodating, even if I made unusual requests that went against their typical installations. To give you some perspective, we started the paperwork in February and we were still making changes to the plan in mid-April as new technology became available and replaced the old stuff. Eric, Tanya and Emily were always very courteous and cheerful when taking my questions and requests. This was especially appreciated during the permitting and paperwork review processes. It shouldn’t come as a surprise, but you have to get a lot of people to sign off on a solar installation before you can actually install it. These guys held my hand through the whole process though. They kept me up-to-date every day on who would be showing up to inspect which parts of my house and what that meant for the project. They took care of all the coordination between the town inspector, the utility company, and the PUC for the state tax credit. I know it was a lot of work, but I never had to deal with it. They did it all.

After three months of preparation, the permits were finally in place and the parts we decided on had arrived. Now, my setup involved 14.4 kW of power from 48 panels in six rows across two roofs. GSS brought a team of five to my house and they managed to put the whole array together in a day and a half. These guys were just as polite and respectful as the staff I’d been coordinating with so far. The installation crew has been in the game for a while and they are masters of their respective trades – that much I gathered right away – but what really surprised me is how well they worked together as a team. They kept communication constant, they didn’t argue about anything, and they had a rhythm to their work so they all finished the important parts at the same time. I shadowed them throughout the whole process, asking questions about what they were doing and why they decided to go with one technique over another. Each one seemed happy that I was taking an interest in their work instead of just leaving them alone. I learned about electrical engineering from Phil and Troy, mounting rail construction from Nate and Brandon, the microinverter map from Darren, and panel laying from Jake and Zach on the second day. Not only that, but they told me the company’s story and a bit about their team dynamics as well. GSS is a fairly small team compared to most companies, so they have a very important advantage: they all know each other personally as friends instead of just colleagues. That was pretty apparently when I saw how they worked together, but hearing them say it was a key value of the company really made it clear. These guys are a tight-knit team, and they all believe in the mission. This is definitely the crew you want doing your solar installation.

Eric told me early on that GSS aims to “under-promise and over-deliver”. Well, my array has been active for about two weeks now and I can confidently say that they pulled that off. The panels take care of all of my power needs and they ended up costing about $100 per month less than my old power bill. These guys started saving me money the moment the array got switched on. My roof is beautiful and slick, it’s generating more than enough to power our home and our cars, and I learned a ridiculous amount of stuff about the world of solar throughout the journey. GSS made it the experience an absolute pleasure. I strongly recommend them to anyone that wants to look at getting a solar installation."


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