Solar Panel Cost in Boston, Massachusetts
Local pricing, savings, and net metering data for Boston homeowners.
Solar in Boston: What Homeowners Should Know
Boston sees an average of 4.2 peak sun hours per day, which is what ultimately determines how much electricity a rooftop system produces here. A standard 8 kW system (about 20 panels) generates roughly 9,811 kWh each year in Boston — and paired with Massachusetts's local electricity rate of $0.273/kWh, that's where the savings come from.
At those numbers, a Boston homeowner saves about $223/month ($2,678/year). Against a $28,000 system cost (about $27,000 after Massachusetts state incentives), that works out to a payback of about 10.1 years, after which the system produces essentially free power for two decades — an estimated $64,490 in lifetime savings. Note: the 30% federal tax credit expired at the end of 2025 for purchased systems, though a solar lease or PPA can still pass it through. The local grid is served by Eversource MA, whose net metering policy directly affects how much credit you earn for surplus power.
Cost & Savings Breakdown
Based on a standard 8 kW system in Boston
25-Year Savings Projection
Utility & Net Metering
Available Incentives
Choosing a Solar Installer in Boston
- 1.Get at least 3 quotes. Prices in Massachusetts vary widely between installers — comparing bids on the same 8 kW system is the fastest way to avoid overpaying.
- 2.Confirm Eversource MA interconnection experience. An installer who regularly files with your local utility will move your permit and net-metering paperwork through faster.
- 3.Check licensing & the warranty. Look for NABCEP-certified installers and a workmanship warranty of 10+ years on top of the standard 25-year panel warranty.
- 4.Size for your actual usage. With 4.2 sun hours/day in Boston, make sure the proposed system matches your kWh history — not just your roof space.
Common Questions
How much does solar cost in Boston?
Solar in Boston, Massachusetts costs approximately $28,000 for a 8 kW system, or about $27,000 after state incentives. The 30% federal tax credit expired December 31, 2025 for purchased systems, though solar leases and PPAs can still pass it through.
What is the solar payback period in Boston?
The estimated payback period for solar in Boston is 10.1 years for a standard 8 kW system, based on local sun hours of 4.2 hrs/day and a rate of $0.273/kWh.
Is solar worth it in Boston?
For most Boston homeowners, yes. With 4.2 peak sun hours per day and an electricity rate of $0.273/kWh, a typical system saves $2,678 per year and around $64,490 over 25 years after paying for itself in 10.1 years.
How many solar panels do I need in Boston?
A standard 8 kW home solar system is about 20 panels, producing roughly 9,811 kWh per year in Boston at 4.2 sun hours/day. Your exact size depends on your household's electricity use.
Does Eversource MA offer net metering?
Eversource MA offers Full Retail net metering. Full retail rate.