Georgetown Municipal Light Department

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 If something here is out of date or missing, tell us and we'll fix it.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
NEM TypeAnnual
Line Taps AllowedNo
Load Taps AllowedNo
AC Disconnect RequiredYes

Net metering & export

Net Metering Allowed
Yes
NEM Type
Annual
TOU Utility
No
Post Solar Billing Method
Net Metering
Net Excess Generation Notes

The calculated credit or payment for generation will render either quarterly or one time a year, at the sole discretion of the GMLD. Payments will be in the form of check payable to the customer of record. The cost of power shall be defined as the avoided average monthly Day Ahead Locational Marginal Price (DA-LMP) per kilowatt-hour applicable to Georgetown for wholesale power purchased from the ISO - New England.


https://www.iso-ne.com/isoexpress/web/charts

NEM Rate PG 86

Rebates Offered
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
Percentage
Offset Value
100
Offset Calculation Basis
Historical
Offset Calculation Period
12
Industry Standard Watts Sqft
2
System Offset Notes


Offset Calc Tool
Historical Usage

Metering & disconnect

Production Meter Required
Situational
Production Meter Criteria

PM socket only required if the customer will be participating in the MLP rebate program

Production Meter Position
Inv-Disco-PM-POI
Production Meter Labeling
Production Meter
AC Disconnect Required
Yes
AC Disconnect Labeling
Visible Lockable Labeled Disconnect
Allowed Meter Adapter
None

Plans & docs

Site Plan Reqs

Standard

SLD Reqs

Standard

Electric Service Reqs
  • Production meter required if the customer is participating in the MLP rebate program
  • AC disconnect required
Electrical Stamp Required
No
Equipment Approvals
California Energy Commission
Meter Num Req SLD 3LD
No
ESID Num Req SLD 3LD
No
Website
link
Phone
(978) 352-5730
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with Georgetown Municipal Light Department 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.