Devlin Energy sells and installs residential solar out of Hingham, and its Google file tells two stories at once: 3.9 stars across 76 ratings, with the five-star half praising the sale and the install, and the one-star half describing what happened after the panels were on the roof.
The praise is specific and it repeats across years. Homeowners writing between 2022 and 2025 named the people who handled them — Kyle, Andy, Kim, Matthew, Roy — and described no-pressure quoting, detailed written proposals, and crews who left the site clean; a June 2025 reviewer called the installation crew “very professional courteous and neat,” and a 2023 customer who collected multiple quotes chose Devlin for being local at a competitive, though not the lowest, price. Several liked that one company handled panels, permits, paperwork and inspection instead of three.
The complaints are just as specific, and they cluster on the same seam: what happens after the contract is signed. A homeowner writing in November 2025 was still waiting on a system sold in April 2025, after a design the utility would not support and an interconnection application filed incorrectly. Another, in October 2025, described chasing the service team about an underperforming panel on a 2020 install. In 2024, reviewers described a ground-mount that took close to a year, a $425 charge to roll a truck for a failed inverter, and a system that did not shut down when the electric company cut power — the utility locked it out.
There is a visible pattern of the company answering a bad review after it lands. Two reviewers revised earlier one- and three-star posts after Matthew Devlin reached out and, in their words, made it right, including a 2021 customer who had been invoiced $1,300 for “services provided prior to cancellation.” That cuts both ways: the recovery is real, and so is the fact that it often took a public post to get it.
Its Better Business Bureau file carries an A+ grade and accreditation, and lists battery storage, ground mounts, car ports, EV chargers and roofing alongside solar. A Boston 25 News story in November 2022 quoted Thomas Janoski as the company's director of engineering in Hingham.
Devlin is a reasonable call if you want a local installer who will quote without pressure and carry the permitting and interconnection paperwork themselves — provided you get the schedule in writing. Before signing, pin down the interconnection timeline and who owns that filing, what a post-installation service visit costs, and how change orders and cancellation charges work. Those three are what reviewers came back to most.