Interconnection Standards

Last updated: September 10, 2019

Program Overview

Implementing Sector:State
Category:Regulatory Policy
State:Minnesota
Incentive Type:Interconnection
Web Site:https://mn.gov/puc/energy/distributed-energy/interconnection/
Eligible Renewable/Other Technologies:Geothermal Electric, Solar Thermal Electric, Solar Photovoltaics, Wind (All), Biomass, Hydroelectric, Municipal Solid Waste, Combined Heat & Power, Fuel Cells using Non-Renewable Fuels, Landfill Gas, Wind (Small), Fuel Cells using Renewable Fuels, Other Distributed Generation Technologies, Microturbines
Applicable Utilities:All utilities
System Capacity Limit:10 MW
Standard Agreement:Yes
Insurance Requirements:Vary by system size and/or type; levels established by PUC
External Disconnect Switch:Required
Net Metering Required:No

Authorities

Name:Minn. Stat. § 216B.1611
Date Enacted:2001
Name:Minnesota PUC Order, Docket No. E-999/CI-01-1023
Date Enacted:09/28/2004
Effective Date:09/28/2004
Name:Minn. R. 7835.4800 et seq.
Date Enacted:1983
Effective Date:1983

Summary

The Minnesota Public Utilities Commission (MPUC) adopted updated interconnection standards in June 2019. The standards are modeled after the Federal Energy Regulatory Commission’s Small Generator Interconnection Process and apply to systems up to 10 MW in capacity. 

The MPUC standards, like the FERC standards, use a three-tiered approach to simplify the interconnection process:

- Inverter Process: Systems up to 20 kilowatts (kW) 

- Fast Track Process: Systems larger than 20 kW that meet the eligibility criteria in the table below 

- Study Process: Systems that fail to qualify for the Fast Track Process

Line Voltage

Fast Track Eligible Regardless of Location

Fast Track Eligibility on a Mainline and less than 2.5 Electrical Circuit Miles from Substation

Less than 5 kV

Less than or equal to 500 kW

Less than or equal to 500 kW

Greater than or equal to 5 kV and less than 15 kV

Less than or equal to 1 MW

Less than or equal to 2 MW

Greater than or equal to 15 kV and less than 30 kV

Less than or equal to 3 MW

Less than or equal to 4 MW

Greater than or equal to 30 kV, up to 69 kV

Less than or equal to 4 MW

Less than or equal to 5 MW


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