Interconnection Standards

Program Interconnection Standards
Category Regulatory Policy
Implementing sector State
Last Update
State Minnesota
Website https://mn.gov/puc/energy/distributed-energy/interconnection/
Technologies Solar Thermal Electric, Solar Photovoltaics
Sectors Residential

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 

For more information, contact your utility and review the interconnection information below:


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