Minnesota Interconnection

If you generate electricity and are looking to interconnect with our system, read the documents below to learn more about the process, requirements, and more.

You may pay your application fee online or send a paper copy of your application along with the application fee to:

Otter Tail Power Company
Attn: Interconnection Coordinator
215 S. Cascade St.
Fergus Falls, MN 56538-0496

In addition to the procedures listed above, Minnesota Distributed Energy Resource interconnecting customers are required to abide by the following technical requirements to our electrical system:

As of January 1, 2024, we require the use of UL 1741SB (3rd Ed.) certified inverter(s) and Utility Required Profiles (URPs) to ensure the inverter-type DER system(s) adhere to our newly updated Technical Specifications Manual (TSM) requirements, shown above. 

For additional information on Utility Required Profiles, please visit the EPRI website and review a copy of EPRI’s Technical Report titled, ‘Common File Format for DER Settings Exchange and Storage’.

Otter Tail Power’s Utility Required Profiles (URP’s):