SELCO - Shrewsbury Electric and Cable Operations

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 If something here is out of date or missing, tell us and we'll fix it.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

Net metering & export

Net Metering Allowed
Yes
NEM Type
Monthly
TOU Utility
No
Post Solar Billing Method
Net Metering
Rebates Offered
No
Deregulated
No

Interconnection & taps

Approval Req To Install
Yes
Supply Side Taps Allowed
No
Line Taps Allowed
No
Load Taps Allowed
No
Tap Criteria
  • Load or Line side taps are not acceptable within the utility meter socket.
Automatic Transformer Upgrade Size
0

System size & offset

System Size Restrictions
10
System Size Restriction Type
AC kW
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
System Offset Notes


Metering & disconnect

Production Meter Required
Yes
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
  • The disconnect must be in a readily accessible location, visible from the SELCO meters, for utility access.
  • Install an external whole-house emergency disconnect between the revenue meter and main panel if one does not already exist.
SLD Reqs

Meter Orientation = Over/Under

  • Include all system devices, wire sizes, equipment ratings, and a visible, lockable disconnect switch.
  • Wire the production meter socket with the PV output to the top (line side) building load to the bottom (load side).
  • Install an external whole-house emergency disconnect between the revenue meter and main panel if one does not already exist.
Electric Service Reqs


Electrical Stamp Required
No
Meter Num Req SLD 3LD
No
ESID Num Req SLD 3LD
No
Rate Schedule Link
link
Website
link
Phone
(508) 841-8500
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with SELCO - Shrewsbury Electric and Cable Operations 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.