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Unitil (NH)

New Hampshire Utility Interconnection & net metering rules
Net Metering Allowed1
Line Taps Allowed1
Load Taps Allowed1

Net metering & export

Net Metering Allowed
1
Post Solar Billing Method
Net Metering
Rebates Offered
1
Allows Standby
1

Interconnection & taps

Approval Req To Install
Yes
Interconnection Level
3
Line Taps Allowed
1
Load Taps Allowed
1
Automatic Transformer Upgrade Size
0

System size & offset

System Size Restrictions
0
System Size Restriction Type
No Restrictions
System Size Battery Included
0
System Size Includes Existing Systems
0
Offset Type
No Restrictions
Offset Value
0
Offset Calculation Period
0
Industry Standard Watts Sqft
2
System Offset Notes

We do not limit the size system you wish to install and will perform our analysis based on the system size you propose. There may be system modifications required as the system size increases and those are identified during the analysis phase. An example of this would be upgrading the size of the distribution transformer that serves the Customer.

Offset Calc Tool
N/A

Metering & disconnect

Production Meter Required
No
Production Meter Position
N/A
Production Meter Labeling
N/A
Allowed Meter Adapter
None

Plans & docs

Site Plan Reqs

Site plan Including location of: 

Interconnecting transformer

Interconnection device

Point of Common Coupling

Point of Interconnection

Line Extension

SLD Reqs

- The system showing all switching and protective devices and the tie point to the utility system.

- The one-line shall include all Current transformers and Voltage Transformers with all ratios.

Electric Service Reqs

An ESS Questionnaire must be filled out by design for all battery projects. A blank copy of this form is uploaded to the Files section below titled "Unitil ESS Questionnaire." Example project Forever Portal Example completed form OneDrive

Placards

Site placard to label utility meter as "net meter"

Website
link
Phone
(630) 773-6480

Other details

Restrict Inspection
0
Address ID
134359
Express Planset Eligible
Yes
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with Unitil (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.