In addition to energy generation, SMMPA plays an active role in planning and building an integrated, regional transmission infrastructure. By investing in transmission, SMMPA helps to provide reliable electric service, provides access to new generating resources, and receives revenue which helps hold down its electric rates.


The Agency's members are located in the transmission control areas of the SMMPA, Xcel Energy, Great River Energy (GRE) and Alliant Energy, and they’re connected to the electric transmission systems of the SMMPA, Xcel Energy, Dairyland Power Cooperative, ITC Midwest and GRE. The Agency has constructed various 69 kV, 161 kV, 230 kV and 345 kV transmission lines and associated substation facilities to more reliably serve its members.


SMMPA has transmission agreements with neighboring utilities and takes Midcontinent Independent System Operator (MISO) network service for its members.


Additionally, the Agency has been a partner the past 12 years with other utilities in the CapX2020 initiative to upgrade and expand the regional transmission grid to ensure electric reliability. Through this initiative, more than $2 billion was invested by participating utilities to construct 800-plus miles of high-voltage transmission lines linking Minnesota to the Dakotas and Wisconsin.



CapX2020 is a joint initiative of 11 transmission‐owning utilities, including SMMPA, in Minnesota, North Dakota, South Dakota and Wisconsin that recently completed a 12-year upgrade of the regional transmission system.

Badger-Coulee Transmission Project

The Badger-Coulee transmission project, which began in May 2016, is constructing 180-miles of high voltage transmission line from La Crosse, Wisconsin to the western edge of Madison, Wisconsin.


SMMPA participates in the Midcontinent Independent System Operator (MISO) wholesale energy market as both a buyer and seller of capacity and energy.  


Minnesota's Electric Transmission System

SMMPA is a sponsoring utility in Minnesota's Electric Transmission System, an initiative designed to help meet the growing need for improved electricity transmission.


Interconnection of new generation facilities, transmission facilities, or end-user facilities with the Agency’s transmission system must meet certain requirements to avoid adverse impacts to the bulk power system.