Solar Panel Cost in Massachusetts (2026)
In Massachusetts, home solar installs for roughly $3.20/watt in 2026. A typical 8 kW system runs about $25,600, with an estimated payback near 8.5 years at the state's ~30¢/kWh electricity rate.
| System size | Est. cost | Est. annual savings | Payback |
|---|---|---|---|
| 6 kW | $19,200 | $2,300/yr | 8.5 yrs |
| 8 kW | $25,600 | $3,000/yr | 8.5 yrs |
| 11 kW | $35,200 | $4,100/yr | 8.5 yrs |
Estimates use ~$3.20/watt installed and Massachusetts's ~30¢/kWh rate. Before any state/local incentives.
Massachusetts solar notes
Massachusetts' SMART program pays a per-kWh production incentive on top of net metering, and very high retail rates offset the elevated install costs and modest sun.
Heads up: the 30% federal tax credit for purchased home solar ended Dec 31, 2025. Leased/PPA systems may still qualify through 2027, and Massachusetts may offer its own incentives — check locally.
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