The rebate that was repealed
The New Hampshire Residential Renewable Electrical Generation Rebate paid $0.20 per watt up to a maximum of $1,000 for a residential solar installation.
SB 303, signed into law in 2024, permanently repealed it. It is not paused, not out of funding and not awaiting reauthorisation; it is gone, and there is no successor programme for residential solar.
Because it existed recently and was widely written about, guides and quotes still listing it are common. A New Hampshire solar rebate appearing in a proposal is an out-of-date template rather than an offer.
Ask directly whether any state rebate appears in the quote and have it removed if it does. Then compare the revised figure against other quotes on the same basis.
And the federal credit that followed
The 30 percent federal Residential Clean Energy Credit under Section 25D expired for property placed in service after December 31, 2025. A cash or loan purchase now receives no federal tax credit.
New Hampshire has no personal income tax on wages, so there is no state income tax credit for solar and there never has been. Nothing at state level replaced the federal credit because there was nothing there to expand.
Section 48E, the commercial Clean Electricity Investment Credit, survives at 30 percent for third-party owners under leases and power purchase agreements. The provider claims it rather than you.
That makes third-party ownership the only route by which a 30 percent federal credit touches a Nashua rooftop. Evaluate it as a rate rather than a credit, and ask for the side-by-side against a cash purchase on the same system and term.
What is actually left, itemised
Net Metering 2.0, crediting exports at 100 percent of supply, 100 percent of transmission and 25 percent of distribution, which lands at roughly 75 to 95 percent of retail.
The RSA 72:62 property tax exemption, if and only if your municipality has adopted it. It is a local option rather than a statewide rule and roughly two thirds of towns have taken it up.
A residential battery incentive that Eversource has offered in New Hampshire, reported at $230 per kWh with a $3,000 cap. Confirm the current terms directly with Eversource rather than relying on a quote.
And the absence of a sales tax on the equipment, which is worth real money on a system in this price range even though it never appears as a line item.
The pieces that remain, kept separate
Strike any New Hampshire state rebate from a quote that shows it, because SB 303 repealed it in 2024.
Strike the federal residential credit too, since Section 25D expired for property placed in service after December 31, 2025, and do not expect a state credit to replace it because New Hampshire has none.
Rebuild from Net Metering 2.0 at the partial credit rate, the property tax exemption if your town has adopted it, the Eversource battery incentive if storage is in the design and you have confirmed it, and no sales tax.
Then add the electricity you stop buying at roughly 24 to 27 cents per kWh. In a state with essentially no incentives left, that number is the case.