Black Hills, NorthWestern Energy Merging to Form $15.4 Billion Power, Gas Utility

August 21, 2025--Researched by Industrial Info Resources (Sugar Land, Texas)--The U.S. power and gas sectors this week saw one the biggest deals in some time enter their merger and acquisition domain as Black Hills Energy (Rapid City, South Dakota) and NorthWestern Energy (Sioux Falls, South Dakota) announced their plans for an all-stock merger that will allow the companies to be better equipped for strengthening grid infrastructure and meeting rapidly growing power demand.