Interconnection Standards (New Hampshire)

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Last modified on February 12, 2015.

Rules Regulations Policies Program

Place New Hampshire

Name Interconnection Standards
Incentive Type Interconnection
Applicable Sector Agricultural, Commercial, Fed. Government, Industrial, Institutional, Local Government, Nonprofit, Residential, Schools, State Government
Eligible Technologies Anaerobic Digestion, Biodiesel, Biomass, CHP/Cogeneration, Fuel Cells, Fuel Cells using Renewable Fuels, Geothermal Electric, Hydroelectric, Hydrogen, Landfill Gas, Other Distributed Generation Technologies, Photovoltaics, Renewable Fuels, Small Hydroelectric, Solar Thermal Electric, Tidal Energy, Wave Energy, Wind
Active Incentive Yes

Implementing Sector State/Territory
Energy Category Renewable Energy Incentive Programs

Applicable Utilities All utilities

External Disconnect Switch Not required for inverter-based systems that comply with IEEE 1547 and UL 1741

Insurance Requirements Utilities may not require customers to purchase or maintain property insurance or comprehensive personal liability insurance

Net Metering Required Yes

Standard Agreement No

System Capacity Limit 1 MW

Date added to DSIRE 2002-08-14
Last DSIRE Review 2013-07-18
Last Substantive Modification
to Summary by DSIRE

References DSIRE[1]


New Hampshire requires all utilities selling electricity in the state to offer net metering to customers who own or operate systems up to one megawatt (1 MW) in capacity that generate electricity using solar, wind, geothermal, hydro, tidal, wave, biomass, landfill gas, bio-oil or biodiesel. CHP systems that use natural gas, wood pellets, hydrogen, propane or heating oil are also eligible.* The aggregate statewide capacity limit of all net-metered systems is 50 MW.

The New Hampshire Public Utilities Commission’s (PUC) rules for net metering, which distinguish between small customer-generators (up to 100 kilowatts) and large customer-generators (greater than 100 kW and up to 1 MW), include interconnection provisions. Interconnection for large systems is generally governed by each utility’s interconnection practices as set forth in the utility’s tariff filed with the PUC.

The interconnection provisions include timelines for the application process and inspection process, and guidance for technical studies and analysis (if necessary). Utilities generally may not require an external disconnect switch for inverter-based systems that comply with the IEEE 1547 and UL 1741 technical standards. Specific safety requirements apply to non-inverter-based systems.

Utilities may not require customers to purchase or maintain property insurance or comprehensive personal liability insurance to protect against potential liability resulting from the installation, operation or ownership of the generation and interconnection facility. A mutual indemnity agreement is generally required.

Utilities generally may not require customers who comply with these provisions to meet additional requirements, perform or pay for additional tests, or pay additional interconnection-related charges.

* CHP systems up to 30 kW must have a system efficiency of at least 80% to be eligible. CHP systems greater than 30 kW and up to 1 MW must have a fuel system efficiency of at least 65%. CHP systems may account for a maximum of 4 MW of the state’s aggregate net-metering limit.

Incentive Contact

Contact Name Tom Frantz
Department New Hampshire Public Utilities Commission

Address 21 South Fruit Street
Address 2 Suite 10
Place Concord, New Hampshire
Zip/Postal Code 03301
Phone (603) 271-2431


Authorities (Please contact the if there are any file problems.)

Authority 1: New Hampshire Statutes § 362-A:9
Date Effective 2001
Date Enacted 1998-08-25

Authority 2: New Hampshire Statutes § 362-A:1-a

Date Enacted 1983 (subsequently amended)

Authority 3: N.H. Admin. Rules, Puc 900
Date Effective 1/12/2001 (subsequently amended)

  • Incentive and policy data are reviewed and approved by the N.C. Solar Center's DSIRE project staff.[1]


  1. 1.0 1.1  "Database of State Incentives for Renewables and Efficiency (DSIRE)"