Wright-Hennepin Coop Elec Assn

Minnesota 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 If something here is out of date or missing, tell us and we'll fix it.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
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
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
System Offset Notes

Systems over 40 kW will have a 120% offset requirement


For interconnection of a proposed DER to a radial distribution circuit, the aggregated generation, including the proposed DER, on the circuit shall not exceed 15% of the line section annual peak load as most recently measured or 100% of the substation aggregated minimum load. A line section is that portion of an Area EPS Operator’s electric system connected to a customer bounded by automatic sectionalizing devices or the end of the distribution line. The Area EPS Operator may consider 100% of applicable loading (i.e. daytime minimum load for solar), if available, instead of 15% of line section peak load.

Offset Calc Tool
N/A

Metering & disconnect

Production Meter Required
Yes
Production Meter Criteria

Production meter to be installed ONLY if customer requests it. This is NOT required for standard installations

Production Meter Position
N/A
Production Meter Labeling
N/A
AC Disconnect Required
Yes
AC Disconnect Labeling
Visible Lockable Labeled Disconnect

Plans & docs

Site Plan Reqs
  • Shall be to scale
  • Location of meter(s)
  • Location of Utility AC disconnect
  • Location of PCC/RPA/PoC
  • Location of underground/overhead electrical wires - If underground, shall include any easements/right of ways
SLD Reqs
  • Applicant Name
  • Application ID
  • Installer name and contact information
  • Address where DER system will be installed
  • Correct electrical position of all equipment, including but not limited to: Panels, Inverter, DC and AC disconnects.
  • Distance between equipment
  • Labeling found on equipment
  • Total Aggregated AC nameplate rating of DER
  • DER protection elements


make sure New Net Meter is wired in series Bottom side to Bottom Side. Double lugging in the meter sockets is not allowed. See Reference Doc " New Net Metering Guide" in Files section for clarification.


The one-line diagram shall be signed and stamped by a Minnesota Professional Engineer if the DER is larger than 20 kW and uncertified or larger than 250 kW and certified.


Please Label the AC Disconnect Correctly- Should be: Main Utility AC Disconnect, visible, lockable, readily accessible and within 10ft of the general service meter".

Meter Equipment is not set up, according to our technical requirements, each meter socket needs a bypass lever and this needs to be noted on the one line

Electric Service Reqs

National Electrical Code (NEC)

Institute of Electrical and Electronics Engineers (IEEE 1547)

UL 1741

Minnesota Statute 216B.164

Minnesota Rules Chapter 7835

Install Reqs

AC Disconnect Required

  • Be within 10 feet of the utility meter
  • Provide a visible air-gap.
  • Be an AC rated device, UL or National Electrical Manufacture’s Association approved.
  • Be manually operable by one person.
  • Be lockable in the open position.
  • Be sized for adequate ampere capacity.
  • Be continuously readily accessible, with unescorted access to the Area EPS Operator’s personnel.
  • Does not require fasteners to be removed to access the disconnect handle.
  • Be gang operated so that operation of one switch handle opens and closes all energized conductors simultaneously.
  • Not interrupt neutral conductors.
Placards

All signage and labeling shall meet applicable NEC requirements including NEC 110.21 (B), 690.13 and 750.10.


AC Disconnect

  • The Utility AC disconnect shall be labeled as “UTILITY AC DISCONNECT”. The Utility AC Disconnect shall be located within 10 feet of the main service meter.
  • If a single Utility AC Disconnect cannot be used to disconnect all DERs, all Utility AC disconnects should include numerical identification such as “UTILITY DER AC DISCONNECT 1 OF 2” or similar. The number of disconnects required to be operated to isolate the DER from the utility should be clear. A permanently affixed waterproof placard shall be located within 10 feet of the main service meter clearly indicating the number and locations of the multiple Utility AC Disconnects.
Electrical Stamp Required
No
Equipment Approvals
California Energy Commission
Meter Num Req SLD 3LD
Yes
ESID Num Req SLD 3LD
No
Site Plan Notes
  1. Please add meter # to the site plan and system summary
Electrical Diagram Notes
  1. ALL JOBS [AC Disconnect is within 10' ft of the general service meter socket. AC Disconnect is fused, lockable, visible and readily accessible // Metering feed is Bottom Side to Bottom Side.]
  2. The utility requires two meter sockets above the main service panel. Please review. Ticket #2262066 (Utility Correction)

Other details

Revision Required
Yes
Mod Swap Requires Planset
Yes
Compiled from public records, 2026. Tariffs and interconnection rules change; verify with Wright-Hennepin Coop Elec Assn 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.