About Us

We are a customer, growth and safety focused utility company that is dedicated to our communities. We improve life with energy as an energy partner of choice. Our diverse culture fuels unique perspectives, opening doors to new insights and possibilities. Based in Rapid City, South Dakota, we have over 3000 employees and serve 1.3 million natural gas and electric utility customers across eight states (South Dakota, Montana, Wyoming, Colorado, Nebraska, Iowa, Kansas, and Arkansas).