Big Stone South to AlexandriaTransmission Line
This project will help ensure the transmission grid continues to provide reliable, cost-effective electricity to customers across the region.
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Otter Tail Power and Missouri River Energy Services are proposing a new transmission line to connect Otter Tail Power's Big Stone South Substation near Big Stone City in South Dakota to the Alexandria Substation owned by Missouri River Energy Services near Alexandria, Minnesota. We will work closely with landowners, communities, and local officials to identify potential routes and file route permits with appropriate regulatory agencies.
Otter Tail Power Company, an electric utility owned by Otter Tail Corporation, provides electricity and energy services for approximately 133,000 residential, commercial, and industrial customers across 70,000 square miles in Minnesota, North Dakota, and South Dakota.
Missouri River Energy Services (MRES) is an organization of 61 member municipalities in Iowa, Minnesota, North Dakota, and South Dakota that own and operate their own electric distribution systems. MRES is governed by a 13-member board of directors who are elected by and from the ranks of our member representatives.
Long-range transmission planning is necessary to ensure a reliable and efficient regional and interregional transmission system. MISO has identified the BSSA transmission project to support the region's transmission system now and into the future. Otter Tail Power and Missouri River Energy Services are working together with MISO to help keep low-cost energy available and reliable for those who need it. The project will benefit the region by helping to:
Ensure electric reliability
Increase resiliency to extreme weather events
Reduce transmission congestion
Increase access to low-cost energy
Developing and constructing a transmission line is a multi-year effort. We are gathering public feedback on the route corridors to help us develop a proposed route. We’ll continue coordinating with landowners, local governments, agencies, and other stakeholders throughout the development process. The new line is tentatively scheduled to be complete in either 2030 or 2031.Get involved!
Processes and timing vary from MN to SD. Our project team will refine the timing of these steps to be in compliance with each respective state’s requirements.
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Otter Tail Power and Missouri River Energy Services will be engaging with residents, business and property owners, agencies, and other stakeholders.
We still have a ways to go before we finalize a route and begin construction. We are looking forward to your feedback and input as we continue project development.