Massachusetts vs New Hampshire Solar Incentives: Which State Gets the Better Deal?
Side-by-side comparison of Massachusetts and New Hampshire solar incentive programs in 2026: state tax credits, net metering rules, exemptions, payback period, and projected 25-year savings.
| Metric | MA · Massachusetts | NH · New Hampshire |
|---|---|---|
| Avg Monthly Bill | $195 | $170 |
| Peak Sun Hours / Day | 4.4 ◆ | 4.3 |
| Avg $/Watt Installed | $3.1 | $3.05 ◆ |
| State Tax Credit | 15% / $1000 ◆ | None |
| Net Metering | modified | modified |
| SREC Market | ~$11200 | No |
| Property Tax Exempt | Yes | Yes |
| Sales Tax Exempt | Yes | No |
| Avg Payback (yrs) | 6.8 ◆ | 7.7 |
| Avg 25-Year Savings | $52,600 ◆ | $42,300 |
State Tax Credit Comparison
Massachusetts offers a 15% state income tax credit (capped at $1,000). New Hampshire offers no state income tax credit.
Net Metering Policies
Massachusetts: modified rate net metering active. New Hampshire: modified rate net metering active.
Net metering is often the most economically significant solar policy because it determines how excess production is valued. Retail-rate states (where you receive full retail price for exported energy) have substantially better solar economics than avoided-cost or no-net-metering states.
Average 25-Year Savings
Massachusetts: $52,600 over 25 years (avg payback 6.8 yrs). New Hampshire: $42,300 over 25 years (avg payback 7.7 yrs).
Verdict: Which State Wins on Solar?
Massachusetts edges out New Hampshire on lifetime savings primarily due to higher solar irradiance.
Note: state averages mask significant within-state variation. Your specific utility, roof orientation, and household electricity profile drive your actual numbers — use the calculator to model your home directly.