Commercial Solar Construction in Massachusetts, Rhode Island, New Hampshire & New York
CommercialSolarGuy is a licensed, bonded, and insured solar construction company and general contractor specializing in commercial solar energy and energy storage projects across the Northeast.
Our team designs and builds rooftop, ground-mount, carport, and agrivoltaic solar installations for businesses, schools, farms, municipalities, and non-profits. Every project is led by our in-house team of licensed Construction Supervisors, Master Electricians, and Project Managers.
Founded by John Fitzgerald Weaver — developer of a single 75-megawatt commercial solar portfolio along with hundreds of additional megawatts of projects— Commercial Solar Guy brings decades of combined engineering, construction, and project management experience to every job. We handle every phase from initial site visit through Permission to Operate (PTO) and long-term operations and maintenance, typically delivering projects in 7 to 12 months.
Ready to discuss your project? Call (508) 499-9786 for a free 15-minute consultation.
What we build
CommercialSolarGuy builds every major type of commercial solar installation across the Northeast:
- Rooftop solar — Ballasted and attached systems on flat and pitched commercial roofs. Featured projects include a rooftop installation at Harvard University and multi-building rooftop systems in Boston and Rhode Island.
- Ground-mount solar — Pile-driven and ballasted ground arrays on open land, from small installations to multi-megawatt solar farms. Featured project: ground-mounted solar farm in Rhode Island.
- Solar carports — Engineered canopy structures over parking lots that generate power while providing shaded parking, with optional EV charging integration.
- Agrivoltaic solar — Dual-use installations combining active farming with solar generation, qualifying for the Massachusetts SMART dual-use adder.
- Solar-plus-storage — Hybrid systems pairing solar with battery energy storage to manage demand charges, maximize interconnection capacity, and provide resilience.
Our team has installed dozens of megawatts of commercial solar across rooftops, parking lots, and land in New England
Pre-construction and development services
Before we break ground, CommercialSolarGuy delivers the full suite of design, engineering, financial, and permitting services that make a commercial solar project succeed. These services are included in every construction project we build, and are also available as standalone engagements for clients developing projects with other builders.
Feasibility studies
We combine that with research into local zoning and utility interconnection queues to ensure your project can move ahead as planned.
Financial Analysis
We model ROI, incentives, depreciation, and cash flow projections to ensure the project meets your financial goals.
Lease / installation agreement review
Solar Due Diligence
Owner’s representative / Owner's engineer
As your Owner’s Rep, we coordinate the engineers, installers, and utilities, ensuring the project is built to your standards and with your goals in mind.
Pre-construction engineering and design
Engineering reports
Solar construction and oversight
Complete project management
What makes commercial solar unique?
Getting a commercial solar installation is not as simple as putting some panels on the roof and turning them on—it’s a significant financial investment designed to provide long-term value to your business. In order to do that, every project requires guidance from knowledgeable experts.
Here are some key factors that set commercial solar projects apart:
- Diverse Goals: Businesses and landowners use solar to achieve multiple goals, including energy savings, meeting organizational sustainability (ESG) targets, and hedging against demand charges and future changes in energy price stability.
- Complex finances: The proper financial structure is essential to a good commercial solar project. Each project involves a mix of federal and state incentives, accelerated depreciation schedules (MACRS), specialized financing options, and the potential for creating new revenue streams from selling energy credits. The ideal outcome is working with these factors to create a calculated, long-term ROI for your business.
- Precise engineering requirements: Whether you’re looking for a solar installation on a commercial rooftop or a ground-mounted system on land you own, the process of engineering the system is complex, requiring detailed site surveys and structural analysis, careful calculations, and expert knowledge of building and land-use codes.
Why choose a licensed solar construction company?
CommercialSolarGuy‘s founder John Weaver has developed over 200 megawatts of commercial solar over his career. Our team includes a licensed General Contractor, Construction Supervisor, a Project Manager, and Master Electricians – and has built dozens of megawatts of commercial solar across New England, including projects at Harvard University and the U.S. Air Force, multi-building rooftop systems in Boston, and ground-mounted solar farms in Rhode Island. We personally manage every project from feasibility through long-term operations and maintenance. When you’re ready to start your project, contact us or call (508) 4999-SUN
Commercial Solar Guy News:
2026 may be the last best time for commercial solar
One of the biggest financial benefits of installing a commercial solar panel system is the 30% dollar-for-dollar tax credit that is a part of the Biden administration’s “Inflation Reduction Act.” This tax credit is simple. If your business owes $300,000 in taxes to...
Clean Power Hour recap 2/9/2026: Wind wins, robotics rise, and demand for grid-scale batteries beats EV
In the latest episode of the Clean Power Hour Live, hosts Tim Montague and John Weaver (the CommercialSolarGuy) returned from a busy week at RE+ Northeast in Boston to breeze through a group of recent global news stories about offshore wind victories, the rapid...
Clean Power Hour Recap 2/3/2026: Missouri solar ban, balcony solar, Musk’s 100 GW ambition, and the roots of an industry
In the latest episode of the Clean Power Hour Live, hosts Tim Montague and John Weaver (the CommercialSolarGuy) dove into a mix of baffling policy maneuvers, massive manufacturing announcements, the technical standard defining the future of micro-scale distributed...
2025 project of the year, part 2: The sales and design process
A solar sales proposal and the finished solar project based on that proposal often resemble each other pretty closely. Sometimes, the end result is vastly different from what was originally envisioned. The 279-kW solar array we installed on the roof of the National...
How the ConnectedSolutions Rhode Island battery program for commercial buildings cuts costs and boosts resilience
If you own or manage a commercial building in Rhode Island, you already know that electricity costs are an ever-increasing, sometimes volatile, and always ongoing expense. With new data centers and winter natural gas supply shortages driving utility rates higher every...
Clean Power Hour Recap 1/13/2026: The great solar divide, the capital shift, and the tech frontier
In the first Clean Power Hour Live of 2026, hosts Tim Montague and John Weaver discussed articles related to these three important themes: The widening gap in the deployment of solar and storage capacity between the United States and China Why green energy has taken...