Tongue River Electric Cooperative

Montana 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 If something here is out of date or missing, tell us and we'll fix it.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
Post Solar Billing Method
Net Metering
Net Excess Generation Notes

After the 12-month billing period, any banked/unused energy (kWh) will be zeroed out and will not be compensated.

Rebates Offered
No
Deregulated
No
Allows Standby
No

Interconnection & taps

Approval Req To Install
Yes
Line Taps Allowed
No
Load Taps Allowed
No
Automatic Transformer Upgrade Size
0
Meter Aggregation Allowed
No

System size & offset

System Size Restrictions
10
System Size Restriction Type
DC kW
System Size Battery Included
No
System Size Includes Existing Systems
No
Offset Value
0
Offset Calculation Period
0
Industry Standard Watts Sqft
2
System Offset Notes

10 kW AC or 100% offset, whichever is less

Offset Calc Tool
Historical Usage

Metering & disconnect

Production Meter Required
No
AC Disconnect Required
Yes
AC Disconnect Labeling
Utility Disconnect Switch
Allowed Meter Adapter
None

Plans & docs

Site Plan Reqs

AC disconnect required within 10ft of meter

Electrical Stamp Required
No
Equipment Approvals
California Energy Commission
Meter Num Req SLD 3LD
No
ESID Num Req SLD 3LD
No
Rate Schedule Link
link
Website
link

Other details

Revision Required
No
Mod Swap Requires Planset
No
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with Tongue River Electric Cooperative 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.