How much do solar panels cost in New Hampshire?

New Hampshire homeowners pay about $3.00/W before incentives in this planning model. A typical 7.0 kW system is roughly $21,000 before incentives and about $20,000 after the state rebate. Installation costs trend higher in the White Mountains region due to snow load engineering requirements.

What solar incentives are available in New Hampshire?

New Hampshire offers a state rebate (verify current rate and cap at dsireusa.org) for qualifying residential systems. Full retail net metering provides bill credits at the same rate you pay. A property tax exemption prevents solar from increasing assessed value. The calculator default includes a placeholder state incentive value. Verify current program funding and your utility territory before relying on any incentive.

Is solar worth it in New Hampshire?

Solar economics in New Hampshire depend on $0.27/kWh electricity, 4.2 peak sun hours/day, installed cost, roof exposure, and full retail net metering. The planning payback range is 7–9 years. High electricity and natural gas rates ($2.13/therm) make each self-generated kWh highly valuable, offsetting the short winter production season.

Does New Hampshire have net metering?

Yes. New Hampshire provides full retail net metering, meaning exported solar kWh earn credits at the same retail rate you pay. Confirm the current tariff, monthly rollover rules, and system-size limits with your utility — Eversource Energy, Unitil, and New Hampshire Electric Co-op may have different interconnection terms.

Which utilities serve New Hampshire for solar?

Eversource Energy serves most of southern and central New Hampshire including Manchester, Nashua, and Concord. Unitil covers the seacoast region around Portsmouth and Exeter. New Hampshire Electric Co-op serves rural areas and the White Mountains region. Eversource has the largest customer base and most established solar interconnection process.

How do New Hampshire winters affect solar production?

Winter production drops significantly due to shorter days and snow cover, but cold temperatures improve panel efficiency. Most systems are installed at an angle that encourages snow shedding. The key to New Hampshire solar economics is that high summer production earns credits at $0.27/kWh through net metering, which offset winter consumption when generation is low.

State Guide

Solar Panel Cost in New Hampshire (2026)

See how much solar panels cost in New Hampshire with local electricity rates, incentives, and payback estimates.

Last updated: 2026-06-09· Source label: EIA residential electricity rates, IRS federal clean energy credit, NREL/PVWatts solar assumptions

New Hampshire's "Live Free or Die" ethos means limited but targeted solar incentives paired with some of New England's highest electricity rates at $0.27/kWh. Natural gas at $2.13/therm is also expensive, making electrification with solar more attractive than in gas-cheap states. Eversource Energy, Unitil, and New Hampshire Electric Co-op serve most customers, with Eversource dominating the southern tier. Full retail net metering ensures exported power earns full credit, while the state rebate of $0.20/W ((verify current cap at dsireusa.org)) provides a modest but meaningful upfront offset. Short winter days limit annual production relative to sunnier states, but high avoided-cost value keeps payback competitive at 7–9 years for well-sited systems.

$0.27/kWhAvg. Electricity Rate93% above the national average of $0.14/kWh. New Hampshire rates are among the highest in New England, driven by transmission costs and natural gas dependence. Source: EIA Electric Power Monthly (2025 data).

7-9 yearsSolar PaybackPlanning range from New Hampshire defaults: $0.27/kWh, $3/W, 4.2 peak sun hours/day, and current state or utility incentive assumptions.

$3.0/WAvg. Install CostFor a typical 7 kW system, roughly ~$21,000 before incentives. The federal residential credit (Section 25D) expired Dec 31, 2025 and is not available by default for 2026 projects.

—Climate ZoneASHRAE/IECC heating climate zone classification

Net cost before federal residential credit~$20,000Uses New Hampshire's $3/W installed-cost default and $1,000 state/local incentive default; no 2026+ federal residential credit is applied by default.

Estimated payback7-9 yearsDepends on actual utility rate, Full retail net metering, installed cost, roof production, financing, and incentive eligibility.

Annual bill offset$1,550-$2,100/yrEstimate based on a 7.0 kW system, 4.2 peak sun hours/day, $0.27/kWh, and PVWatts-style production before fixed charges or export-credit adjustments.

Estimates based on new-hampshire state averages. Your actual cost depends on roof, equipment, installer, and financing.

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Overview

Use this result

Use the calculator inputs first, then compare the result against local rates, incentives, roof conditions, and utility export rules.

Method, assumptions, and sourcesOpen this section when you want to audit the calculation behind the estimate.Show

Calculation Method

New Hampshire solar payback = net installed cost after incentives / annual avoided electricity cost plus export credits

Key Assumptions

Policy last reviewed: 2026-06-09. Federal residential credit assumptions are project-year dependent and not applied by default for 2026+ projects.
Residential rate and installed-cost figures are planning benchmarks, not a final utility bill audit or installer quote.
The model assumes a roof with usable sun exposure; shading, roof age, electrical upgrades, permitting, and financing can materially change cost.
New Hampshire economics should be checked against New England rate pressure, utility net-metering caps and rules, and winter production limits.
The federal tax credit only helps households with sufficient tax liability and qualifying project documentation.

Data Sources

Electricity rates

EIA Electric Power Monthly

Residential electricity-rate benchmark used for avoided-bill savings.

Solar production

NREL PVWatts

Solar production assumptions should be checked against local roof orientation, shading, and climate.

Federal incentive

IRS Residential Clean Energy Credit

Supports 2026 Section 25D expiration (residential ITC no longer available by default) for qualifying residential solar costs.

State and utility policy

DSIRE and local utility tariff pages

Used as a reminder to verify state incentives, net-metering, export-credit, and rebate rules before relying on an estimate.

Result Summary

Net cost before federal residential credit

~$20,000

Uses New Hampshire's $3/W installed-cost default and $1,000 state/local incentive default; no 2026+ federal residential credit is applied by default.

Estimated payback

7-9 years

Depends on actual utility rate, Full retail net metering, installed cost, roof production, financing, and incentive eligibility.

Annual bill offset

$1,550-$2,100/yr

Estimate based on a 7.0 kW system, 4.2 peak sun hours/day, $0.27/kWh, and PVWatts-style production before fixed charges or export-credit adjustments.

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Try the Solar ROI Calculator for Solar Panel Cost in New Hampshire (2026)→Enter your system size, electricity rate, and state incentives to estimate your solar return on investment.

Solar Panel Cost in New Hampshire (2026)

Incentives & Rebates

Federal Residential Credit Caveat

State and Utility Incentive Context

Net Metering

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