Rochester Public Utilities

Minnesota Utility Interconnection & net metering rules

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Net Metering AllowedYes
NEM TypeAnnual
Line Taps AllowedYes
Load Taps AllowedYes
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

Kilowatt-hours produced by the QF in excess of the monthly usage shall be supplied as an energy credit on the customer's energy bill, carried forward and applied to subsequent energy bills, with an annual true-up on December 31. Excess energy credits existing as of December 31 shall default back to the Utility with no compensation to the QF.

Rebates Offered
No
Deregulated
No
Allows Standby
No

Interconnection & taps

Approval Req To Install
Yes
Line Taps Allowed
Yes
Load Taps Allowed
Yes
Tap Criteria

The line side tap must meet NEC requirements. The load side taps in the meter socket are allowed if using a tap connector rated for the socket.

Automatic Transformer Upgrade Size
0
Meter Aggregation Allowed
Yes

System size & offset

System Size Restrictions
40
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
Inverter Oversize Restrictions
No
System Size Justification
Load Justification
System Offset Notes

Systems over 40 kW AC must be sized within 120% offset of the customer's historical usage.

Systems below 40 kW does not have any offset requirement.

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
Utility Disconnect Switch
Allowed Meter Adapter
None

Plans & docs

Site Plan Reqs

Standard

SLD Reqs

Meter Orientation = Over/Under


The SLD must Indicate the line and load side of the production and revenue meters. 

LABEL BOTH PM AND UM AS LEVER BYPASS

PRODUCTION METER WIRING ---> INVERTER TO TOP ---> POI TO BOTTOM

Electric Service Reqs


Install Reqs

"RPU always requires a utility AC disconnect for all generation interconnections designed to operate in parallel to our system."


Production Meters:

RPU requires a production meter at all generation interconnections of a qualifying facility. For all installations the customer must provide the meter socket and RPU will supply the meter. RPU will require a ringless, heavy-duty, lever-bypass meter socket on all generation output service, 240 volts or less and 320 continuous amps or less. If the generation output is greater than 240 volts or 320 continuous amps, instrument rated metering is required. 

Placards

RPU requires all labeling that complies with the National Electric Codes (NEC) be shown on the solar plan sets. Signage also must be included identifying location of remote Generator Disconnect(s), if located other than within 10ft of main meter or within sight.

Electrical Stamp Required
No
Equipment Approvals
California Energy Commission
Meter Num Req SLD 3LD
No
ESID Num Req SLD 3LD
No
Electrical Diagram Notes

All Jobs [24/7, unescorted keyless access shall be provided for the meters and ac disconnect//Production Meter & AC disconnect must be located together and within 10' of the main service meter]

Rate Schedule Link
link
Website
link
Phone
(507) 280-1500

Other details

Revision Required
Yes
Mod Swap Requires Planset
Yes
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with Rochester Public Utilities 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.