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MISO approves $2 billion investment in new transmission lines in Minnesota to expand electric grid, setting path for future of energy in the state

8/2/2022 11:22:40 AM

Transmission lines are the highways for our electric grid to deliver power to Minnesota homes and businesses. On July 25, 2022, the Mid-Continent Independent System Operator (MISO) unanimously approved three projects which are entirely or partially in Minnesota, representing an investment of more than $2 billion to expand and improve reliability for our electric grid. This investment is part of $10 billion in new transmission lines planned for the Midwest under a coordinated effort by MISO, which manages the regional electric grid for 15 Midwest and Southern states, and the Canadian province of Manitoba. 

The economic benefits of the transmission line expansion significantly exceed costs, with a cost-benefit ratio of $2.80 to $4 for each $1 invested in the electric grid, according to MISO analysis.  The MISO plan would encompass a total of 18 projects across the Midwest Subregion, with costs shared by all electric users across that region. 

MISO’s transmission plan report outlines these projects in Minnesota: 

Project Description Estimated Cost
Big Stone South-Alexandria-Cassie’s Crossing $574 million 
Iron Range-Benton County-Cassie’s Crossing $970 million
Wilmarth-North Rochester-Tremval $689 million 
Total Estimate $2.23 billion

“This investment in our electric grid keeps Minnesota on the path to have reliable and affordable energy into the future. We are expanding critical energy infrastructure, creating jobs and building resilient communities,” said Commerce Commissioner Grace Arnold. “Building these transmission lines will allow Minnesota’s transition to clean energy to continue, so Minnesota is powered by homegrown energy rather than by imported fossil fuels.” 

“Today, wind and solar energy projects are providing family-supporting wages and benefits for LIUNA members in every corner of the state, from Hoyt Lakes to Fergus Falls to Grand Meadow to Luverne,” said Kevin Pranis, who represents the Laborers’ International Union of North America (LIUNA) Minnesota & North Dakota, a union of more than 13,000 construction laborers who build and maintain Minnesota’s energy, transportation, water and building infrastructure. “The investments approved by MISO will provide the transmission resources needed to support continued economic development and clean energy job creation across Minnesota,” He continued. 

Dave Geschwind, CEO of the Southern Minnesota Municipal Power Agency (SMMPA), said, “The MISO plan supports the transition of SMMPA and other upper-Midwest utilities to a more carbon-free resource mix. SMMPA is proud to have been part of the original CapX2020 transmission projects that serve as the foundation for this new expansion, and we look forward to working again with our utility partners in the region on these new projects.”

Mark Kotschevar, Rochester Public Utilities General Manager, said, “Rochester Public Utilities looks forward to collaborating with our regional utility partners on these important transmission projects that will facilitate the reliable and affordable transition to a less carbon intensive energy mix in the future.” 

“Xcel Energy and our partners are committed to unlocking new renewable energy while also continuing to deliver reliable and affordable electricity,” said Michael Lamb, Senior Vice President –Transmission for Xcel Energy. “The Wilmarth-North Rochester project, and other recently approved plans, move us closer to achieving our vision to deliver 100% carbon-free electricity by 2050 as we lead the nation’s clean energy transition.” 

The Minnesota Public Utilities Commission (PUC) has the responsibility under Minnesota law to determine the need for and the routing of large transmission lines in Minnesota. “Minnesota has a regulatory process in place to ensure the public is represented and has input in this process, and consumers are protected,” said Commerce Commissioner Arnold. The Minnesota Department of Commerce represents the public in issues being considered by the PUC. 

Get updates and news from the Minnesota Department of Commerce by following Commerce on Facebook and Twitter or by subscribing to our news email list

Media contacts: 
Mo Schriner, Minnesota Department of Commerce
Tony Benson, Rochester Public Utilities 


Electric & Transmission

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