Founded in November 1923, NorthWestern Energy Group, Inc. is a Delaware corporation committed to providing essential energy infrastructure and valuable services that enrich lives and empower communities. As a long-standing partner to both its customers and the communities it serves, NorthWestern supplies electricity and natural gas to approximately 775,300 customers across Montana, South Dakota, Nebraska, and Yellowstone National Park. The company’s headquarters is located at 3010 W. 69th Street, Sioux Falls, South Dakota, 57108. For more information, visit their website at http://www.northwesternenergy.com.

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