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Massachusetts · Updated August 2026
What solar costs in Massachusetts
Real production math for Massachusetts, how to size a system from your own bill, and the difference between buying and a $0-down power purchase agreement.
~1,168kWh per kW per yearRanked #1 by Solar Power World · Inc. 5000 · 20,000+ installations
The honest version
Why nobody can quote you a price from a web page
Solar cost is not a sticker price. It is a function of three things: how much electricity you use, what your utility charges for it, and what your specific roof can produce. Two houses on the same street with the same roof can need systems that differ by 40% because one has a pool pump and the other has gas heat.
What we can do honestly is show you the arithmetic for Massachusetts and let you place yourself in it.
What a system produces in Massachusetts
| System size | Annual production | What that is worth |
|---|---|---|
| 6 kW | ~7,008 kWh/yr | ~$2,032 of electricity a year at 29.0¢ |
| 8 kW | ~9,344 kWh/yr | ~$2,710 of electricity a year at 29.0¢ |
| 10 kW | ~11,680 kWh/yr | ~$3,387 of electricity a year at 29.0¢ |
| 12 kW | ~14,016 kWh/yr | ~$4,065 of electricity a year at 29.0¢ |
Based on 4.0 peak sun hours a day and a 80% system derate, at a rate of 29.0¢.
Sizing from your bill instead
| Your bill today | Roughly this much power | Roughly this size system |
|---|---|---|
| $100/month | ~345 kWh/mo | roughly a 3.5 kW system to cover it |
| $150/month | ~517 kWh/mo | roughly a 5.3 kW system to cover it |
| $200/month | ~690 kWh/mo | roughly a 7.1 kW system to cover it |
| $300/month | ~1,034 kWh/mo | roughly a 10.6 kW system to cover it |
This is deliberately rough. It ignores shading, roof orientation, available roof area and how your usage is distributed across the year. It is a starting point, not a quote.
The part that decides your monthly number
Buying versus a power purchase agreement
If you buy
Highest lifetime value if you have the capital and you stay in the home. You own the equipment and any renewable credits, and you carry maintenance. As of 2026 a homeowner purchase carries no federal credit.
If you use a PPA
$0 upfront. We install and own the system and you buy the power at a rate set in your agreement. No loan, no lien on the house, no maintenance bills. You only pay for power the system actually produces.
The residential federal tax credit (25D) ended for systems purchased after December 31, 2025.
You will still see ads promising a 30% credit that “ends December 31.” Read the date on them. If you buy a system today as a homeowner, you cannot claim that credit. What remains under 48E applies to the owner of the system — which, under a PPA, is us. SolarAmerica does not provide tax advice; talk to your tax professional about your situation.
What Massachusetts adds on top
Massachusetts runs SMART, a per-kWh production tariff paid over ten years in declining blocks. There is a 15% state credit capped at $1,000 for purchases, and ConnectedSolutions pays battery owners for grid events.
What moves the price on your specific roof
Roof age and condition, pitch and orientation, shading from trees and neighboring structures, electrical panel capacity, whether a main panel upgrade is required, roof penetration type, and whether you add storage. Any of these can change the system design materially, which is why the quote step reads your actual address rather than a state average.
Massachusetts guides
Solar by county in Massachusetts
Who you would be working with
SolarAmerica
We design your system and manage the project; installation is performed by vetted licensed partners in your area. SolarAmerica is not itself the installing contractor.
Questions
The things people actually ask
How much do solar panels cost in Massachusetts?
There is no single number, and anyone publishing one is guessing. Cost tracks system size, and system size tracks your usage. A 9 kW system in Massachusetts produces about 10,512 kWh a year, worth roughly $3,048 against a 29.0¢ rate. Under a PPA the upfront cost is $0 and you pay for the power instead of the hardware.
What size solar system do I need in Massachusetts?
Divide your annual kilowatt-hours by about 1,168 — that is what one kilowatt of panels produces in Massachusetts in a year. A home using 12,000 kWh a year needs roughly 10.3 kW before accounting for shading and roof area.
Is $0 down real?
Yes, under a power purchase agreement, and it is real because someone else owns the system. There is no loan and no lien on your home. You buy the power the system produces at an agreed rate. If that rate does not beat what you pay your utility, we will tell you.
Do I get a tax credit if I buy solar in Massachusetts in 2026?
Not the residential one. 25D ended for systems purchased after December 31, 2025. The remaining 48E credit goes to the owner of the system. Talk to your tax professional about your situation.
Get the number for your actual roof in Massachusetts
About 60 seconds. No cost, no obligation, and we will tell you if solar does not make sense for your home.
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