Liberty Utilities (NH)

New Hampshire Utility Interconnection & net metering rules

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Net Metering AllowedYes
NEM TypeAnnual
Supply Side Taps AllowedYes
Line Taps AllowedYes
Load Taps AllowedYes
AC Disconnect RequiredYes

Net metering & export

Net Metering Allowed
Yes
NEM Type
Annual
TOU Utility
Yes
Post Solar Billing Method
Net Metering
Net Excess Generation Notes

IV. (a) For facilities with a total peak generating capacity of not more than 100 kilowatts, when billing a customer-generator under a net energy metering tariff that is not time-based, the utility shall apply the customer's net energy usage when calculating all charges that are based on kilowatt hour usage. Customer net energy usage shall equal the kilowatt hours supplied to the customer over the electric distribution system minus the kilowatt hours generated by the customer-generator and fed into the electric distribution system over a billing period.

V. When a customer-generator's net energy usage is negative (more electricity is fed into the distribution system than is received) over a billing period, such surplus shall either:

(a) Be credited to the customer-generator's account on an equivalent basis for use in subsequent billing cycles as a credit against the customer's net energy usage or bill in a manner consistent with either subparagraph IV(a) or IV(b), as applicable; or

(b) Except as provided in paragraph VI, the customer-generator may elect to be paid or credited by the electric distribution utility for its excess generation at rates that are equal to the utility's avoided costs for energy and capacity to provide default service as determined by the commission consistent with the requirements of the Public Utilities Regulatory Policy Act of 1978 (PURPA). The commission shall determine reasonable conditions for such an election, including the frequency of payment and how often a customer-generator may choose this option versus the option in subparagraph (a).

VI. Instead of the option in subparagraph V(b), an electric distribution utility providing default service to customer-generators may voluntarily elect, annually, on a generic basis, by notification to the commission, to purchase or credit such excess generation from customer-generators at a rate that is equal to the generation supply component of the applicable default service rate, provided that payment is issued at least as often as whenever the value of such credit, in excess of amounts owed by the customer-generator, is greater than $50.

Rebates Offered
Yes
Deregulated
No
Allows Standby
Yes

Interconnection & taps

Approval Req To Install
Yes
Supply Side Taps Allowed
Yes
Line Taps Allowed
Yes
Load Taps Allowed
Yes
Automatic Transformer Upgrade Size
0

System size & offset

System Size Restrictions
0
System Size Restriction Type
No Restrictions
System Size Battery Included
No
System Size Includes Existing Systems
No
Offset Type
No Restrictions
Offset Value
0
Offset Calculation Period
0
Industry Standard Watts Sqft
2
Utility Specific Adjustments
  • Customer generators 100 kW AC or smaller are eligible for net metering.
  • Small generators can expand their existing system by 50%, up to a 20 kW maximum.
  • Example: Existing system 10 kW → 50% = 5 kW → Max expansion without losing net metering credit: 10 kW → Total system cannot exceed 20 kW.
System Offset Notes


Metering & disconnect

Production Meter Required
No
Production Meter Position
N/A
Production Meter Labeling
N/A
AC Disconnect Required
Yes
AC Disconnect Labeling
Visible Lockable Labeled Disconnect
Allowed Meter Adapter
None

Plans & docs

Site Plan Reqs
  • AC disconnect must be outside
  • Sample Site Plan in files if needed to reference
SLD Reqs
  • UL Listed Inverter information (model#, rating)
  • Name and contact information for the preparer
Electric Service Reqs
  • Liberty Utilities reserve the right of request a witness test before the final approval is sent out.
Placards

External Lockable Disconnect

  • Label: “Utility Disconnect”

Utility Meter

  • Label: “Warning: Liberty Utilities Meter Energized by 2 Sources”

Placard Material & Lettering

  • Red metal or plastic
  • Weatherproof and suitable for outdoor use
  • Engraved white letters, at least ⅜ inch tall
  • Permanently affixed
Electrical Stamp Required
No
Meter Num Req SLD 3LD
No
ESID Num Req SLD 3LD
No
Website
link
Phone
(800) 833-4200
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with Liberty Utilities (NH) before you rely on this. The useful move: if an installer says you need a main panel upgrade, ask how these tap and interconnection policies were considered first.