New Hampshire's governor signed SB 540 on July 2, 2026. The law starts on January 1, 2027. Some websites give an earlier date, but they are wrong. This guide is as of October 2026. It is not legal advice, so check your utility's page before you buy.
Is balcony solar legal in New Hampshire now?
Not yet. SB 540 was signed on July 2, 2026, and it takes effect on January 1, 2027. Until then, the normal utility interconnection process applies. The city of Dover's energy commission and electrical inspector have urged caution about plug-in solar in the meantime. For other states, see which states allow balcony solar.
How many watts can I plug in in New Hampshire?
One system per metered customer, with a top inverter output of 1,200 watts AC. It connects through a receptacle or another non-permanent wiring connection. It is meant to offset part of what your home uses on site. It must be installed and run under the state building code and the maker's instructions.
Do I need to tell my utility in New Hampshire?
Not before you plug in. A utility cannot ask for approval, an interconnection review or agreement, a fee (except charges you run up through use), or extra equipment it picks. A utility may set up a way to report your system's watts after install, "for notification purposes only." Check your utility's page.
Can my landlord or HOA say no to balcony solar in New Hampshire?
The law does not stop them. SB 540 has no rules for renters, landlords or HOAs. Your lease and HOA rules still apply. Ask in writing before you buy. Our renters guide has a checklist. The state energy department must also keep a consumer web page with meter, billing and insurance tips.
Do I get paid for power I send to the grid in New Hampshire?
Probably not. The law says these systems are meant to offset part of your own use. It has no net metering clause. News reports say the law exempts them from net metering, but we could not confirm that wording. Plan on savings only. See our savings guide.
What does a balcony solar kit need in New Hampshire?
It must be certified by a national testing lab to safety standards for distributed energy and plug-in solar systems. It must follow national interconnection standards. The law does not name a UL number. A building code section waits until the state energy department says a national standard exists. See kits sold in the US.
What can I do in New Hampshire today?
Wait, and prepare. Read what balcony solar is. Check your sun and your outlet. Ask your utility which meters work with plug-in solar. Do not plug in a grid-tied kit before January 1, 2027. Look for certified kits as the start date nears.
The quick version
- SB 540 was signed on July 2, 2026.
- It starts January 1, 2027.
- One system per meter, up to 1,200 W AC, no approval or fees.
- No renter or HOA rules in the law.