Black Hills Corp. is seen as one of NorthWestern Energy's biggest rivals. Black Hills Corp. was founded in 1941 in Rapid City, South Dakota. Like NorthWestern Energy, Black Hills Corp. also operates in the Energy & Utilities sector. Black Hills Corp. generates $613.8M more revenue than NorthWestern Energy.
Duke Energy is one of NorthWestern Energy's top competitors. Duke Energy was founded in 1904, and its headquarters is in Charlotte, North Carolina. Like NorthWestern Energy, Duke Energy also operates in the Energy & Utilities space. Duke Energy has 26,327 more employees than NorthWestern Energy.