Is solar worth it in New Hampshire?
At New Hampshire’s average rate of 25.9¢/kWh and about 1250 kWh per kW of panels a year, a typical home pays back its system in roughly 8.6 years on electricity savings alone — no federal credit, which ended for buyers at the end of 2025 — then keeps saving. Run your own numbers below.
Sources: EIA · NREL · IRS. No federal credit — it ended 31 Dec 2025.
Independent estimate for guidance only — not a quote or advice. High prices help; net metering credits exports near retail for residential systems.
What drives solar payback in New Hampshire
New Hampshire homeowners pay about 25.9¢/kWh, which is 7.5¢ above the national average. A rooftop here generates roughly 1250 kWh per kW each year — below the typical US figure. On exports, New Hampshire offers full retail net metering: High prices help; net metering credits exports near retail for residential systems.
New Hampshire electricity price trend
Average residential rate, monthly, May 2023 – Apr 2026. Down 11% over the period.
Source: U.S. Energy Information Administration (EIA), Electric Power Monthly · range 21.79–30.6¢/kWh
A worked example
For a New Hampshire home with a $227/month power bill (typical household usage at New Hampshire’s rate):
That nets out to a payback of about 8.6 years — shorter than simply dividing net cost by year-one savings, because power prices climb ~2.5%/yr so your savings grow each year. Assumes 3.00 $/W installed before incentives and a typical 40% self-consumption; your actual cost, roof and usage will differ — adjust the calculator above.
Who supplies your power in New Hampshire
New Hampshire's grid is served mainly by three investor-owned utilities — Eversource (by far the largest, the former Public Service Company of New Hampshire), Liberty Utilities and Unitil — plus the member-owned New Hampshire Electric Cooperative (NHEC), which covers much of the rural north and centre of the state. All operate under the same net-metering framework set by the state Public Utilities Commission, so the export terms below apply broadly wherever you live. NHEC, as a co-op, sets some of its own credit and rate details, so cooperative members should confirm the specifics directly rather than assuming the investor-owned tariffs apply unchanged.
What you’re paid for what you export
New Hampshire pairs some of the dearest electricity in the country — about 25.6 cents/kWh — with net metering that credits residential exports at close to the full retail rate, and that combination is most of the story. Both the energy and transmission components are credited at retail, credits carry forward month to month against the power you draw back, and systems up to 100 kW qualify, which covers every home installation going. Persistent long-run surpluses are trued up at a lower avoided-cost rate, so the framework rewards matching the array to your own consumption rather than heavily over-building. For most of the year, though, the grid functions as a roughly one-for-one battery — and at 25 cents a credited kilowatt-hour, that is worth a great deal. This is not California's NEM 3.0, and the difference shows up directly in the payback.
New Hampshire incentives & taxes in 2026
The support here is quieter than in the rest of the Northeast, but not zero. Start with what New Hampshire doesn't have: a sales tax — the equipment carries no tax at all, a real saving next to neighbouring states. Property-tax relief exists under RSA 72:61-72, but each municipality chooses whether to adopt the exemption, so ask your town rather than assume. Systems up to 100 kW can also register for Class II renewable-energy certificates, though REC prices are modest and the paperwork often isn't worth it for a single house. The former state residential rebate has been wound down.
The 30% federal credit ended on 31 December 2025 and can now only reach a homeowner indirectly through a lease or PPA. Check the current state and utility programs on DSIRE’s New Hampshire list, then type any incentive into the calculator above to see how it shortens your payback.
What solar costs in New Hampshire
Reckon on $3.00 to $3.50 per watt, a shade dearer than the typical US install — Northeast labour rates, a smaller pool of installers and winter scheduling constraints all feed in. An 8 kW system comes to roughly $24,000-$28,000 before incentives, though the absence of any sales tax quietly trims the sticker relative to most states. In a small market the gap between one installer's quote and another's can be wide, so don't stop at one.
The honest verdict for New Hampshire
Two strengths carry New Hampshire: electricity prices among the nation's highest, and net metering that hands exports back at close to retail. Every kilowatt-hour you avoid buying — or send back — is worth around 25 cents, and that alone is what gets a well-sized, mostly self-consumed system to payback in roughly 10-13 years despite the thin incentive stack. For a high-usage home with good roof exposure the case is clear. For a modest consumer in 2026 it's a longer-horizon bet that needs honest arithmetic before you commit.
Sources for this page
Driving electric — or heating electric — in New Hampshire?
Your home electricity rate also sets what it costs to charge an EV and whether a heat pump beats a gas furnace. See the New Hampshire EV charging cost and the New Hampshire heat pump vs gas comparison.