South Dakota

NorthWestern Energy Group is launching an all-source capacity RFP on August 15, 2025, for its South Dakota electric grid to enhance reliability due to rising demands. They also explore Southwest Power Pool’s resource adequacy study. Aion Energy LLC will administer the RFP. NorthWestern Energy ensures electricity supply through owned assets, agreements, and market acquisitions, serving ~842,100 customers across Montana, South Dakota, Nebraska, and Yellowstone Park aiming at cost-effective service.