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New Hampshire Net-Metering Rules

Date Last Updated8/13/2014
Policy TypeNet-Metering Policy
Policy Administrator/Contact OfficeNew Hampshire Public Utilities Commission
Policy Initiation Date1/1/1998
Policy SummaryNet-metering rules were first enacted in New Hampshire in 1998, and have subsequently been amended several times with the most recent amendments occuring in 2013 with the passage of SB 98. The rules require all utilities selling electricity in the state to offer net-metering to customers who own or operate distributed generation systems up to 1 MW including landfill gas and CHP systems. Eligible CHP systems are those that use natural gas, wood pellets, hydrogen, propane or heating oil, along with those that use renewable fuels such as biomass, landfill gas, bio-oil, or biodiesel.

The rules for net-metering distinguish between small customer-generators (up to 100 kilowatts) and large customer-generators (greater than 100 kW and up to 1 MW). The rules vary slightly for each customer type. 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%.

The aggregate statewide capacity of all net-metered systems is limited to 50 MW. Any customer net excess generation (NEG) during a billing cycle is credited to the customer's next bill and carried forward indefinitely. At the end of a 12-month period, customers may choose to receive payment for any NEG at the utility's avoided-cost rate. Customers retain ownership of any renewable energy credits associated with net-metered generation. However, RECs associated with the net excess generation purchased by the utility at the end of an annual billing period may be claimed by the utility.

Systems up to 100 kW must use a single meter that measures both the inflow and outflow of electricity internally. Larger systems must use a bi-directional meter. Additional meters are installed at the utility's expense.

Legislation enacted in May 2012 (HB 1296) allowed CHP systems to account for up to 4 MW of the state's aggregate net-metering capacity limit of 50 MW. This new law took effect July 13, 2012. SB 98 enacted in 2013 allows a customer generator to become a group host for a group of customers who are not customer generators. The kWh credits generated by a host system will be shared between the members of the group.
CHP Eligibility RequirementsBoth fossil-fueled and renewably-fueled CHP systems are eligible for net-metering.
Eligible Project Size (MW)Systems up to 1 MW are eligible to net-meter.
Minimum Efficiency Required/
Other Performance Requirements
A CHP system up to 30 kW must have a fuel system efficiency of at least 80%. A system >30 kW but up to 1 MW must have a fuel system efficiency of at least 65%.
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