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Is plug-in solar legal in New Hampshire?

Rules pending

Is plug-in solar legal in New Hampshire? A law is signed, but it is not fully running yet. New Hampshire signed SB 540 on 02 Jul 2026, with the main date set for 01 Jan 2027. The cap is 1,200 W.

What the New Hampshire law says

  • Size. Up to 1,200 W of AC output.
  • Safety listing. Nationally recognized testing laboratory.
  • Telling the utility. No. A utility may offer a way to report system size, for notification only.

Chapter 262. One system per metered customer. The state building code review board still has to amend the code, and one section starts only once a national standard is certified to exist. The state Department of Energy must warn that unlisted systems may affect homeowners or renters insurance.

What has started and what has not

The bill is signed, which means the direction is settled. What is still open is timing and detail: the main provisions start on 01 Jan 2027. Until then there is no settled legal route here, so check this page again before you buy a kit. We will change the status once it is running.

Renters, condos and apartments

Nothing we have read about the law in New Hampshire covers renters, landlords or condo associations, so we will not guess. Your lease and your landlord's rules still apply.

What it might save you

We have not put a New Hampshire savings figure on this page yet, because we have not finished checking the state electricity price and a solar output figure for Manchester. Our calculator is the place to try your own numbers once the US version is up. The method is on the methodology page.

Nearby states we have covered

Maine, Vermont, Massachusetts. See the full state tracker to compare rules.

How New Hampshire compares

Other states with a signed law that has not fully started: Virginia, Colorado and Connecticut. For a different picture, see Utah. While you wait for the start date, it helps to know what you would be buying. How plug-in solar works explains the parts, and it is worth reading before you shop.

Questions people ask

Is plug-in solar legal in New Hampshire?
A law is signed, but it is not fully running yet. New Hampshire signed SB 540 on 02 Jul 2026, with the main date set for 01 Jan 2027. The cap is 1,200 W.
Do I need to tell my utility in New Hampshire?
No. A utility may offer a way to report system size, for notification only.
What is the wattage limit in New Hampshire?
1,200 W of AC output.
Can renters install plug-in solar in New Hampshire?
Nothing we have read covers renters in New Hampshire, so we will not guess. Ask your landlord, and read your lease.
What is the status of the New Hampshire plug-in solar bill?
SB 540: Chapter 262. One system per metered customer. We last checked on 13 Oct 2026.
This is general information, not legal or electrical advice. If your socket or wiring is old, ask a licensed electrician first.
Sources
  1. New Hampshire: NHPR, New Hampshire plug-in solar law (8 Jul 2026). www.nhpr.org accessed 13 Oct 2026
  2. New Hampshire: New Hampshire Business Review. www.nhbr.com accessed 13 Oct 2026