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 If something here is out of date or missing, tell us and we'll fix it.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

Net metering & export

Net Metering Allowed
Yes
NEM Type
Monthly
Post Solar Billing Method
Net Metering
Net Excess Generation Notes

At the end of each month, if the Member/Generator has generated more electricity than they used, the Cooperative credits (banks) the net kilowatt-hours produced at the retail power rate. If the Member/Generator uses more electricity than they generate, they pay the difference. Member generation in excess of monthly usage will be allowed to accrue into future periods for the current member at the service location. Accumulated energy credits expire at termination of service, transfer of service to another member, or April 20th of each year, without any compensation to the current member. Credit for energy may only be taken as a per kWh credit against member's monthly billed energy usage. Member/Generator generated kilowatt hour credits cannot be used to offset demand charges, reactive power charges, or the monthly basic charge. 



*** BATTERIES:

Members may wish to install emergency or standby generators for those times there is a prolonged outage on the Cooperative system. The output from these installations is not considered for the purposes of Net Metering

Rebates Offered
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
Yes

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 Value
0
Offset Calculation Period
0
Industry Standard Watts Sqft
2
System Offset Notes

Maximum: 10 kW AC

Metering & disconnect

Production Meter Required
No
Production Meter Position
N/A
Production Meter Labeling
N/A
AC Disconnect Required
Yes
AC Disconnect Labeling
Utility Disconnect Switch

Plans & docs

Site Plan Reqs

Standard

SLD Reqs

Standard

Install Reqs

AC Disconnect must be installed NEXT to the utility meter

Electrical Stamp Required
Yes
Equipment Approvals
California Energy Commission
Meter Num Req SLD 3LD
No
ESID Num Req SLD 3LD
No
Website
link
Phone
(406) 342-5521

Other details

Revision Required
Yes
Mod Swap Requires Planset
No
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with Mid-Yellowstone 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.