HMLP - Hingham Municipal Lighting Plant

Massachusetts Utility Interconnection & net metering rules

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Tariffs and interconnection rules move often. If something here is out of date or missing, tell us and we'll fix it.

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Net Metering AllowedYes
Line Taps AllowedNo
Load Taps AllowedNo
AC Disconnect RequiredYes

Net metering & export

Net Metering Allowed
Yes
Post Solar Billing Method
Export Rate
Solar Export Type
Avoided Cost
Solar Export Value Notes
Systems < 15kW: currently ~$.09/kWh. Systems >15kW: currently ~$.066/kWh. Explanation of export rate can be found at https://www.hmlp.com/RatesBilling/NetMeteringRates.asp
Rebates Offered
No
Deregulated
Yes

Interconnection & taps

Approval Req To Install
Yes
Line Taps Allowed
No
Load Taps Allowed
No
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
Offset Calc Tool
N/A

Metering & disconnect

Production Meter Required
Yes
Production Meter Labeling
Production Meter
AC Disconnect Required
Yes
Allowed Meter Adapter
None

Plans & docs

SLD Reqs

refer to Sample PV System

Placards

Place a red placard labeled "HMLP SOLAR METER" on the PV meter, and another red placard labeled "HMLP BI-DIRECTIONAL METER" on the bi-directional meter.

Electrical Diagram Notes

All Jobs [Solar Production Meter is HMLP Bidirectional Solar Meter // Meter to Be Labeled HMLP Bidirectional Solar Meter On-Site]

Rate Schedule Link
link
Website
link
Phone
(781) 749-0134
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with HMLP - Hingham Municipal Lighting Plant 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.