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:
2025 project of the year: National Elevator Industry Educational Program rooftop
In late 2023, CommercialSolarGuy developed a list of all the sites in our vicinity where solar had the potential to do the most good. The building on the very top of that list was the training center for the National Elevator Industry Educational Program (NEIEP) in...
Clean Power Hour Recap 12/9/25: America crushes storage goals, the solar-storage flywheel, and EV market trends
The December 9th, 2025 episode of the Clean Power Hour saw cohosts Tim Montague and John Fitzgerald Weaver speed run through a list of important news stories from the previous two weeks. The two covered a broad range of topics from the clean energy industry, including...
Safety tie-off anchors: the unsung heroes of the solar job site
See that chunk of metal poking out of the black rubber boot? That there is a safety tie-off anchor, or more technically if we define its explicit purpose: a “fall arrestor.” It’s basically saying **Stop! You are not allowed to fall! You are under arrest! It will upset...
Solar project management from the ground up: insights from a construction manager
Building commercial solar power plants requires managing people, coordinating crews, and handling critical steps like solar project inspections. I sat down with our construction manager, Sena Oran, to discuss her day-to-day work and the many details that make solar...
2.1-Year Solar Payback Period in Rhode Island
After working in the solar industry for a little over 2 years, I’ve seen commercial solar payback take as long as a decade to fully return the original investment. But in Rhode Island, CommercialSolarGuy recently completed a financial model with a solar payback period...
Are Solar Panels Toxic? Absolutely Not—They’re 99.3% Recyclable
A decade ago, it was tricky to predict the end-of-life plan for solar panels. After all, a typical solar panel can last 25-35 years, and forecasting that far into the future for a young industry is no small feat. Today, with more than 2 TW of solar installed...