Solar Panels in Massachusetts (2026 Guide)

Q: How much do solar panels cost in Massachusetts in 2026?

About $3.00–$3.20 per watt — roughly $15,000–$16,000 for a 5 kW system and $30,000–$32,000 for a 10 kW system, before incentives.

Q: Does Massachusetts have a solar tax credit?

Yes — a state income tax credit of 15% of system cost, capped at $1,000. The 30% federal credit expired December 31, 2025.

Q: What is the SMART program?

Massachusetts' SMART program (which replaced SRECs) pays a per-kWh incentive for 20 years — roughly $0.03/kWh for residential, higher for low-income, with adders for batteries and more.

Q: Is solar worth it in Massachusetts?

For most homeowners, yes — the 15% state credit, 20-year SMART payments, full retail net metering, tax exemptions, and high electricity rates make it one of the strongest 2026 markets despite higher install costs.

Massachusetts has one of the strongest remaining incentive stacks in 2026. It combines a 15% state tax credit, 20 years of SMART payments, full retail net metering, and both property and sales tax exemptions. Paired with high electricity rates, that makes solar pay off well even though install costs run above average.

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How Much Do Solar Panels Cost in Massachusetts?

MA installs run about $3.00–$3.20 per watt before incentives:

5 kW system: ~$15,000–$16,000
10 kW system: ~$30,000–$32,000

Costs are higher here, but the incentives are deep. See our 2026 cost breakdown.

Massachusetts Solar Incentives in 2026

15% state tax credit

A state income tax credit worth 15% of your system cost, capped at $1,000.

SMART program (20-year payments)

Massachusetts' SMART program (which replaced SRECs) pays a per-kWh incentive for 20 years — roughly $0.03/kWh for residential (about $0.06/kWh for low-income), paid monthly, with adders for battery storage, canopy, and low-income.

Property & sales tax exemptions

Solar is exempt from added property tax for 20 years and from the 6.25% state sales tax.

No federal credit in 2026

The 30% federal residential credit expired December 31, 2025. See our 2026 tax credit guide and incentives guide.

Net Metering in Massachusetts

Massachusetts still offers full retail (1:1) net metering for residential (Class I) systems in 2026, with no changes — every exported kWh offsets a kWh you'd buy.

Is Solar Worth It in Massachusetts?

For most homeowners, yes. The 15% credit, 20 years of SMART income, full net metering, and tax exemptions combine with high electricity rates to produce strong returns despite higher upfront costs. A custom quote shows your real payback.

Frequently Asked Questions

How much do solar panels cost in Massachusetts in 2026?
About $3.00–$3.20 per watt — ~$15,000–$16,000 for 5 kW, $30,000–$32,000 for 10 kW.

Does Massachusetts have a solar tax credit?
Yes — 15% of cost, capped at $1,000 (state). The federal credit expired December 31, 2025.

What is SMART?
A 20-year per-kWh incentive (~$0.03/kWh residential) that replaced SRECs.

Is solar worth it in Massachusetts?
For most homeowners, yes — one of the strongest 2026 stacks.

Sources

State credit & exemptions: EnergySage, DSIRE. SMART & net metering: Mass.gov SMART, Mass.gov net metering. Costs: SolarReviews. Federal credit expiration: IRS OBBB FAQ.