Data page · Northeast region

Solar Panel Cost in New Hampshire (2026)

A typical New Hampshire rooftop system costs around $3.1/W cash, installed, before incentives — with most quotes landing between $2.85/W and $3.4/W. The federal residential tax credit is $0 for 2026 installations (it ended 12/31/2025).

Market estimate · compiled 2026-08 · sources: marketplace reports, NREL, EIA, state programs — see methodology.

Rooftop solar panels on a Northeast home in New Hampshire. — Typical Northeast home with a rooftop solar array.

The federal residential solar tax credit (30% §25D) ended December 31, 2025.

Under the One Big Beautiful Bill Act, systems placed in service on or after January 1, 2026 do not qualify for the residential credit. Systems installed and operational by December 31, 2025 can still be claimed at 30% on the 2025 return. Commercial and third-party-owned (lease/PPA) projects may qualify under §48E — see the federal incentives page.

Status verified 2026-08-21. Confirm your circumstances with a qualified tax professional.

Typical cash price / watt

$3.10

range $2.85–$3.40 $/W

10 kW system (gross)

$31,000

$28,500–$34,000 · before incentives

Avg electricity rate

27.33¢/kWh

EIA May 2026 · avg use 619 kWh/mo

Export / net-metering

retail nem

Retail net metering (group net metering available).

Cost by system size

Gross installed cash price, before incentives. Net cost in 2026 = gross − $0 federal − any verified state/local incentive (see below).

Solar cost by system size in New Hampshire
System size	Gross price range	≈ $/W	Panels (400–450 W)	≈ Production/yr
5 kW	$14,250–$17,000	$3.10	12–13	6,386 kWh
8 kW	$22,800–$27,200	$3.10	18–20	10,217 kWh
10 kW	$28,500–$34,000	$3.10	23–25	12,771 kWh
15 kW	$42,750–$51,000	$3.10	34–38	19,157 kWh

Solar resource & economics

Production factor (est.): 1485 kWh/kW/yr
10 kW annual production (est.): 12,771 kWh
Year-1 savings for 10 kW at avg rate, 35% self-use: $3,490
Simple payback (net cost ÷ Yr-1 savings, rough): ≈ 18 yrs

These are rough planning numbers. Model your exact scenario in the price calculator — assumptions are visible and adjustable.

Export policy detail

Retail net metering (group net metering available).

Why it matters: if exports are credited at the retail rate (1:1 net metering), every kWh counts the same. Under net billing or avoided-cost export, storing daytime power (battery) or shifting use matters far more. Your utility’s tariff — not the state average — decides this. Utility records

Incentives in New Hampshire (status-aware)

No curated incentive records yet for New Hampshire. This does not mean none exist — check the DSIRE database and your state energy office before budgeting. We add verified records over time.

Tax exemptions: Property tax exemption not confirmed for this state.

Federal residential credit (§25D): expired 12/31/2025 — $0 for 2026 installations. Commercial/third-party-owned projects: see federal incentives.

Local considerations

High rates; moderate sun.
Property tax exemption exists in many towns — verify locally.

Battery note: batteries add roughly $1,000–$2,000/kWh installed and rarely pay for themselves on energy savings alone. In New Hampshire, storage value depends on your export policy (retail nem), TOU rates and outage risk — model it in the battery calculator.

Nearby states

Connecticut Delaware District of Columbia Maine

Next steps

Run the price calculator Analyze a quote Incentive finder

Every estimate on this page is a planning range — only a site inspection and real quote give an exact price.

Data sources: EIA Electric Power Monthly (rates, May 2026) · NREL (solar resource) · marketplace cost reports & state programs (cost estimates, 2026) · incentive records last checked 2026-08-21. Full detail in methodology.