Solar panels in Massachusetts: cost, savings and payback

Estimated monthly production (5.6 kW system)

Is solar worth it in Massachusetts?

Our model estimates a payback of about 6.6 years. Over 25 years the system would save about $52,166, or $37,774 after its cost. The price you are actually quoted has a big effect on payback, so compare several quotes.

Savings assume the panels' output replaces electricity you would otherwise buy at the average rate. Your utility's rules for exported power (net metering or a lower export rate) can change the real figure.

Federal tax credit and local incentives

The federal residential clean energy credit (Section 25D) does not apply to expenditures made after 31 December 2025, and for a solar system the expenditure is treated as made when installation is complete. That is why these estimates include no federal credit. State, utility and local programs may still be available: search the DSIRE incentives database (listed under Sources) for Massachusetts, and ask installers which programs they use.

Buying vs leasing (or a PPA)

When you buy panels, you pay up front or with a loan and keep all the savings. With a lease or power purchase agreement (PPA), a solar company owns the system on your roof; you pay a monthly fee or a set price per kWh, usually with little or nothing up front. Leases and PPAs need less cash but typically save less over time and can complicate selling your home, so read the contract carefully.

Assumptions

• Production: NREL PVWatts v8 for Boston — fixed roof mount, 20° tilt, south-facing, standard modules, 14% system losses.
• Usage: 603 kWh/month, the average Massachusetts residential customer (EIA).
• Electricity price: 30.39¢/kWh, 12-month average, rising 0% a year.
• Cost: $2.57 per watt installed; panels lose 0.5% output a year.
• No federal tax credit, state incentives, financing costs or battery storage.

Run the numbers for your home

Solar guides

Solar

Is Solar Worth It in 2026? What Changed After the Federal Tax Credit Ended

The 25D federal credit ended for systems installed after 2025. Here is what now decides whether solar pays off, and how to estimate your own payback.

Nov 9, 2026 · 6 min read

Solar

How Many Solar Panels Do I Need? A Simple Sizing Guide

Divide your yearly kWh by production per kW to get system size, then by panel wattage to get a panel count. Worked examples and a roof-space check.

Nov 9, 2026 · 5 min read

Solar

Solar Lease vs Buy vs PPA: Which Is Better for You in 2026?

Owning, leasing or signing a PPA changes who gets the savings, who handles upkeep and what happens when you sell. Here is how they compare in 2026.

Nov 9, 2026 · 5 min read

Solar

Net Metering Explained: How Solar Export Credits Work

Net metering credits you for solar power sent to the grid, but export rates and credit rules vary by state and utility. Here is how it works.

Nov 8, 2026 · 6 min read

Solar

Are Solar Batteries Worth It? Costs, Benefits and When They Pay Off

A solar battery pays off mainly when export credits are low, evening rates are high or outages are common. Dated cost data and a quick decision checklist.

Nov 8, 2026 · 5 min read

Solar

How Much Do Solar Panels Cost in 2026? Price per Watt and What Drives It

Solar is priced per watt. See the latest dated figures from Berkeley Lab and EnergySage, sample totals by system size, and what pushes prices up or down.

Nov 9, 2026 · 5 min read

More for Massachusetts

• Electricity rates in MassachusettsPrice per kWh, bills and trends.
• Solar calculator for MassachusettsUse your own bill and quote.