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Sunergy Solutions, LLC is a residential and commercial solar installer based in Londonderry, New Hampshire, also offering roofing and gutter services. The company has been BBB accredited since 2021 with an A+ rating, and reviews describe projects across New Hampshire, Massachusetts and Maine. The bulk of the review record — over a hundred reviews on Google alone — describes a consistent, name-driven sales and installation process: specific project consultants such as Devyn Cote, Angelo Succi and Mike Lynch are credited by name for walking homeowners through financing, permitting and installation, and many reviewers report their electric bills have dropped to zero or near-zero months to years after their systems went live, including a church system in Milford, NH producing more than expected. One customer reports Sunergy covered their electric bills out of pocket during a 2022 supply-chain delay that was outside the company's control. Not every account is trouble-free. A December 2025 review describes a serious billing dispute — the customer was left signed up for two solar loans after the original lender went bankrupt, with Sunergy allegedly failing to cancel the first one, and reported still struggling to reach anyone to get it fixed. A few other reviews, even ones rating the company five stars, describe project timelines stretching well past what was promised at signing — one homeowner was told 90 days and waited nearly six months. Separately, BBB's own profile for the business states it uses subcontractors when a license is required to complete an installation. For homeowners in New Hampshire, Massachusetts or Maine considering solar, roofing or gutter work, Sunergy has an extensive, largely strong track record — but given the loan-management complaint, it's worth confirming in writing exactly which financing accounts are active and getting a firm installation timeline before signing.
“# Sunergy Solutions LLC v. Underriner (trial court document), District Court, D. Massachusetts, 2025 ... UNITED STATES DISTRICT COURT DISTRICT OF MASSACHUSETTS _______________________________________ ) SUNERGY SOLUTIONS LLC, et al., ) ) Plaintiffs, ) ) Civil Action No. v. ) 24-12593-BEM ) KEVIN UNDERRINER, et al., ) ) Defendants. ) _______________________________________) MEMORANDUM AND ORDER ON DEFENDANTS’ MOTION TO DISMISS MURPHY, J. Defendants Quinn Allen and QKM Consulting, Inc. (“QKM”) (collectively, “Defendants”)1 have moved to dismiss the claims made against them by Plaintiffs Sunergy S”
Sunergy solutions installed our solar panels in 2024. Our consultant, Jeff Deming, was professional, knowledgeable, and responsive whenever we reached out with questions. He worked within our budget and helped find us options for financing. Installation was efficient and professional. The installers worked to ensure that the aesthetics of the house would be minimally altered by wiring, electrical boxes, etc. We had one issue where a row of panels stopped producing (unknown reason) but Jeff ensured a technician came out quickly to fix the issue. This is a great company to work with and we have recommended them to others looking for residential solar. Thank you, Sunergy Solutions, for the great work you do.
This has been our second solar installation. The experience has been first rate all the way. Once we decided on a plan, everything went seamlessly. We have made recommendation to a number of our friends.
This is an amzing outfit! Love these guys
I had an outstanding experience working with Sunergy solutions for my solar installation. From start to finish, their team was professional, responsive, and incredibly knowledgeable. They walked me through the entire process, answered all of my questions clearly. The project move forward quickly and efficiently, and everything was completed right on schedule. The quality of work was what really stands out. Everything was done to precision and attention to detail you can tell they take real pride in what they do. I highly recommend Sunergy solutions. It was a pleasure to find a company that delivers this level of service and craftsmanship.
Rob and the entire team at Sunergy have been great to work with. They took the time to explain everything clearly and made sure I felt comfortable throughout the entire process. From the proposal and installation to permits and ongoing support, Sunergy has been excellent every step of the way. My father used Sunergy for his solar project and later recommended them to three other friends. After my own experience, I can see why. I will definitely be recommending them to my friends and will use them again for any future solar service needs.
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2 changes recorded — last scanned Sep 2, 2026.
Restarted a system whose installer vanished5.0