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Proudly Awarded New Hampshire's Best Solar Company!

in the 2022 & 2023 BOB awards!


Granite State Solar is a residential and commercial solar and backup energy solution provider. We make energy projects simple through every step, from the initial site visit and system design, to the project management, permitting and installation, all the way to post-install maintenance.  Our team takes an educational and no-pressure sales approach, and always puts our customers first.  With our full team based in Bow, NH, our doors are always open!

Ready to get started? Learn more below!

Products & Services

Explore our range of products designed to brighten your future. Whether you want to save on your energy bill with solar panels, guarantee continuous power with battery storage or generators, or charge your Electric Vehicle, we have the solutions for you. Ready to make the switch? Check out our products now!

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In our commitment to making solar energy accessible, we've established a partnership with local lender, VSECU, a division of New England Federal Credit Union. They offer low fixed-rate home equity loans for up to 15 years. These loans don't require any upfront payment, and there are no penalties for early repayment. By choosing our solar loan option, you can substitute your current electric bill with manageable monthly payments, often resulting in immediate savings.

Quality & Reliability

We take pride in our careful selection of durable products for installation. Every solar panel we use comes with a reliable 25-year production warranty, ensuring long-term performance. Additionally, a majority of the inverters we install boast 25-year warranties, providing comprehensive coverage for both parts and labor—no unexpected surprises. Our commitment to excellence is evident in the quality of our workmanship, backed by a robust 12-year guarantee.



Our unwavering dedication to excellence is evident in the quality of our workmanship and the careful selection of premium solar panels. This combination ensures that each of our solar installations not only meets the specific demands of New Hampshire but also proves its longevity. Our industry-best 12-year workmanship guarantee underscores our commitment to providing lasting value for our clients. We are wholeheartedly devoted to being the absolute best in our business, prioritizing long-term satisfaction and success.

Why Granite State Solar?


Our professional technicians are experienced in installing energy solutions across New Hampshire.


As a small NH solar energy business, we have low overhead and pass those savings on to you.


Our full-service business covers design, sales, installation, system monitoring, and 5-star customer service.


With our lending partner, we can offer fixed-rate financing for up to 15 years.


We stand behind the work we do for you, so we back all of our workmanship with a 12-year guarantee. 


We choose and install products that stand the test of time, and all of our solar panels come with a 25-year warranty.