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Solar Panel Cost in Massachusetts (2026)

The short answer: in Massachusetts, solar costs about $2.80–$3.60 per watt installed. A typical 8 kW home system runs roughly $24,000–$29,000. The 30% federal tax credit ended Dec. 31, 2025 for purchased systems — but Massachusetts has very high electricity rates and one of the best remaining incentive stacks, so solar still pencils out for many homeowners.

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Massachusetts solar cost at a glance

System sizeTypical homeEstimated cost
6 kWSmaller / efficient home~$20,000
8 kWAverage Massachusetts home~$26,500
10 kWLarger / high-usage home~$33,000

Massachusetts has some of the highest electricity rates in the country (~30¢/kWh) and about 4.2 peak sun hours/day. Those high rates are the single biggest reason solar still pays off well here without the federal credit — every kWh you self-generate is an expensive one avoided.

Massachusetts incentives in 2026

  • Massachusetts state tax credit — 15% of system cost, up to $1,000, on your state income taxes.
  • SMART program — production payments of about $0.03/kWh for 10 years (battery adds ~$0.04/kWh; low-income tiers are higher).
  • Full retail net metering — excess solar is credited near the full retail rate (~31¢/kWh as of early 2026), and runs alongside SMART.
  • Sales & property tax exemptions — solar equipment is sales-tax exempt, and the added home value is exempt from property tax.

(Programs and rates change — confirm with the MassCEC/DOER, your utility, and a tax professional.)

How long does solar take to pay off in Massachusetts?

With very high electricity rates, SMART payments, the state credit, and full net metering — even without the federal credit — many Massachusetts homeowners still see payback in about 7–10 years, then largely free power for the rest of the system's 25+ year life.

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Frequently asked questions

Does Massachusetts still have a state solar tax credit?

Yes — a 15% state income-tax credit up to $1,000, separate from the (now-ended) federal credit. It stacks with SMART payments and net metering.

What is the SMART program?

SMART pays you a fixed amount per kWh your system produces for 10 years (about $0.03/kWh, more with a battery), on top of your net-metering savings.

Did Massachusetts lose the federal solar tax credit?

The 30% federal residential credit ended nationwide on Dec. 31, 2025 for purchased systems. Massachusetts' state credit, SMART, net metering, and exemptions still apply.

Solar cost in other states: National guide · California · Texas · Florida · Arizona · New York · Pennsylvania · New Jersey · North Carolina · Wisconsin

Solar Cost Advisor is a free, neutral tool — we don't sell panels. We help Massachusetts homeowners understand real solar costs and, if they choose, connect with vetted local installers. Get your free estimate →

Solar Cost Advisor™ is a brand of LTR Advisory LLC. Estimates are general information, not a quote or tax advice. Home