For businesses · 50–400 kW+
Commercial solar, engineered for your CFO.
Systems from 50 to 400 kW+ with full financial modeling — SMART, Federal ITC, MACRS, and Class I REC analysis delivered with every proposal. Worcester-based engineering, Massachusetts-focused.
Commercial services
End-to-end solar, for every industry.
Rooftop systems, battery storage, and commercial EV charging — designed, engineered, permitted, and installed by one Worcester-based team.
By the numbers
The business case writes itself.
4-7
Year Payback Period
30-70%
Energy Cost Reduction
25+
Year System Lifespan
$40K+
Annual Savings (avg)
Case studies
Commercial rooftops, built.

commercial
2
Multi-Building Community Solar — Boston, MA
Commercial Rooftop Solar
Boston, MA
274.26 kW
commercial
2
Community Facility Solar — Mattapan, MA
Commercial Rooftop Solar
Mattapan, MA
197.45 kW
commercial
Multi-Unit Townhouse Solar — Boston, MA
Commercial Rooftop Solar
Boston, MA
109.47 kWIndustries we serve
Every vertical. One approach.
Manufacturing
Warehousing
Office Buildings
Retail
Municipal
Education
Nonprofit
Houses of Worship
Our process
From proposal to switch-on.
Consultation
Proposal
Engineering
Permitting & Utility Approval
Construction
Commissioning
Consultation
Proposal
Engineering
Permitting & Utility Approval
Construction
Commissioning
Reviews
Five stars, across the board.
“This team was fantastic. We started with a company that basically decided to pull out of Massachusetts and was screwing us over. Someone on that team whispered that we should switch to East Coast Solar, and they were so right! The people at East Coast Solar were with us every step of the way, even dealt with some unexpected challenges in our town and scaled the system down a bit to fit. Everything ran smoothly, our system is amazing, and we're producing more energy than we use. Definitely recommend!”
Cynthia
Massachusetts
Google
“Matt, who sold me on the system, was extremely knowledgeable about the benefits of solar and the Enphase microinverters and panel options ECS installs. Always answered the phone when I called asking for an update on permitting and interconnection, and showed up promptly for installation. Mike, the owner, was even there installing brackets and carrying panels with the guys! Since my system got PTO in early May I've been storing net metering credits getting ready for winter. Awesome company and people.”
Carl
Massachusetts
Google
“We contacted four companies, including the three recommended by our town solar coach. After reviewing proposals, we selected East Coast Solar: small company, most conservative proposal, fewest panels, lowest cost. Estimated to supply 106% of our annual electric usage, 90% guaranteed. They were diligent and always came when promised. We had some problems with our cathedral ceiling roof transmitting noises, and the crew came back multiple times to reconfigure the panels to make it right.”
Don & Ellen
Wayland, MA
Google
Questions, answered