PlugPayback

Plug-in solar in New Hampshire: is it worth it for you?

Payback, savings and what is allowed in New Hampshire. With your own power price, no email and no sign-up.

What applies in New Hampshire

Allowed with limits
  • Up to 1,200 W inverter output
  • Takes effect January 1, 2027
  • Plug type: NEMA 5-15 (standard 120 V outlet)

Registration steps

  1. Buy a system certified by a nationally recognized testing laboratory to nationally recognized safety standards; max inverter output 1,200 W AC. ↗
  2. Install and operate per the state building code and manufacturer instructions; connect via a receptacle or other non-permanent connection. ↗
  3. If your utility offers a wattage notification method, use it (notification only; no approval, review or fee). ↗
  • Chapter 262 (SB 540-FN), approved 2026-07-02; effective 2027-01-01. One system per metered customer.
  • Building-code section takes effect only when the DOE commissioner certifies a national standard (e.g. UL 3700) exists.
  • Utility not liable; no export compensation.

Rules checked November 5, 2026. Sources

Find the right size for your home

1. Where is the kit going?
2. How many people live in your home?

Typical for this household in New Hampshire: 9,000 kWh a year.

kWh
3. Is someone home during the day?

A balcony railing is near-vertical; a flat roof or garden can be tilted.

$ / kWh

From your bill. Leave blank to use the New Hampshire average of $0.28 per kWh.

How much power?

Suggested for your home 1,150 W (2 panels)

Going bigger pays off up to this size, where you would use about 87% of the power yourself. The next size up (1,200 W) costs $1,799 more and would need more than 25 years to earn that back, because most of its extra power would go to the grid unpaid. Based on a typical 9,000 kWh a year.

Used at homeSent to the grid

1,150 W · from $899

Cheapest kit we found with at least 1,150 W: US Solar Supplier 1180 W Plug-In Solar Kit, 2 panels, 1,180 W. Mount and delivery are extra.

Saves about $246 a year and pays for itself in 3–4 years.

Nothing you enter is stored. Results are estimates, shown as a range.

Typical payback by mounting spot

Standard kit (2 panels), about $2,160 at the average New Hampshire power price of $0.28 per kWh, with someone home part of the day.

Mounting spotGenerated per yearSaved per yearPayback
Balcony railing, facing south 813 kWh $201 9–12 years
Balcony railing, facing east 673 kWh $170 11–14 years
Balcony railing, facing west 673 kWh $170 11–14 years
Tilted, facing south 1,161 kWh $272 7–9 years
Tilted, facing east 987 kWh $238 8–10 years
Tilted, facing west 987 kWh $238 8–10 years
Flat (roof or garden) 1,045 kWh $249 8–10 years

Kits allowed in New Hampshire

Filtered by the local limit, not by commission. We earn a fee on affiliate links; your price does not change.

EcoFlow STREAM Ultra

1,600 W / 1,200 W · 1.92 kWh battery · 10 y

$1,399

View offer

Bright Saver Balcony Solar Kit 180 W

180 W / 360 W · 12 y

$328

View offer

Bright Saver Balcony Solar Kit 360 W

360 W / 360 W · 12 y

$461

View offer

Craftstrom 800 Watt Plug&Play Solar

800 W / 800 W · 10 y

$2,158

View offer

US Solar Supplier 1180 W Plug-In Solar Kit

1,180 W / 900 W · 10 y

$899

View offer

Mango Power S Plug-In Solar Kit

1,200 W / 1,120 W

$2,698

View offer

Common questions

Tenants and flat owners

SB 540 has no landlord/tenant or HOA provision; DOE must warn that unlisted systems may affect renters' or homeowners' insurance.

Grid operator

Optional: utility may set up a wattage notification method, for notification purposes only. No approval, interconnection review, fees or extra equipment.

Still being confirmed

Still being confirmed

We could not yet confirm the following from an official source. Treat them as provisional.

  • sources: Bill text read from a third-party mirror of gencourt.state.nh.us, not the official site.
  • plugType: Law says 'receptacle or other non-permanent wiring connection'; NEMA 5-15 assumed.

Sources