Is balcony (plug-in) solar legal in New Hampshire?
Not yet. SB 540 (Chapter 262, 2026) has been signed and takes effect on Jan 1, 2027. Until then, your utility's normal rules for connecting solar apply.
New Hampshire law
Signed, not in force yetState law: signed, and takes effect on Jan 1, 2027. Until then, your utility's normal rules apply.
- In force from
- Jan 1, 2027
- Size cap
- 1,200 W (AC inverter output; one system per metered customer)
- Law
- SB 540 (Chapter 262, 2026)
- Progress
- Signed on Jul 2, 2026. The building-code part (RSA 155-A:16) takes effect only once the state energy commissioner certifies that a national safety standard for plug-in solar exists (Chapter 262:6).
- Certification
- Certified by an NRTL to nationally recognized safety standards for distributed energy resources and plug-in solar systems
- Landlord
- Statute is silent. Renting? Landlord and HOA rules by state →
- HOA
- Statute is silent.
- Tell your utility?
- No approval, interconnection review or extra equipment, and no fee except charges the system incurs through its use. The utility may set up a way to report the system's wattage after installation, for notification only (RSA 362-A:10).
- Export credit
- Not addressed in the law. It defines a plug-in system as intended to exclusively offset part of the customer's onsite use (RSA 362-A:1-a, IV-a), and the utility isn't liable for "compensation or charges arising from" one (RSA 374:1-b).
Every plug-in solar law starting on Jan 1, 2027, state by state →
More about plug-in solar in New Hampshire
How big a plug-in solar kit is allowed in New Hampshire?
State law: up to 1,200 W (AC inverter output; one system per metered customer).
What certification does a kit need in New Hampshire?
State law: Certified by an NRTL to nationally recognized safety standards for distributed energy resources and plug-in solar systems. How to check a kit →
Do I need to tell my utility in New Hampshire?
State law: No approval, interconnection review or extra equipment, and no fee except charges the system incurs through its use. The utility may set up a way to report the system's wattage after installation, for notification only (RSA 362-A:10).
Can a landlord or HOA stop plug-in solar in New Hampshire?
State law. Landlords: Statute is silent. HOAs: Statute is silent.
Do I get paid for power a plug-in kit sends to the grid in New Hampshire?
State law: Not addressed in the law. It defines a plug-in system as intended to exclusively offset part of the customer's onsite use (RSA 362-A:1-a, IV-a), and the utility isn't liable for "compensation or charges arising from" one (RSA 374:1-b).
How much would a plug-in solar kit save in New Hampshire?
It depends on which way the panels face, their tilt, how much of the power your home uses as it is made, and your utility's rate. The average residential electricity price in New Hampshire was 26.8¢/kWh (our 12-month average of EIA data, Aug 2025–Jul 2026). The calculator on canipluginsolar.com models it hour by hour for your address.
Before you buy a kit in New Hampshire
Neighboring states
Planning a kit in New Hampshire? Get your step-by-step checklist, from the law's own wording.
Renting in New Hampshire? Write a letter to your landlord, matched to New Hampshire's rules.
A federal bill (H.R. 10851) would also require every state to consider plug-in rules; New Hampshire already has its own law. H.R. 10851 on congress.gov.