Exhibit 21

SUBSIDIARIES OF THE REGISTRANT

Name	State or Jurisdiction of Incorporation or Limited Partnership
NorthWestern Corporation	Delaware
NorthWestern Investments, LLC	Delaware
Blue Dot Services Inc.	Delaware
Netexit, Inc.	Delaware
Clark Fork and Blackfoot, LLC	Montana LLC
NorthWestern Services Corporation	South Dakota
Nekota Resources, Inc.	South Dakota
NorthWestern Energy Development, LLC	Delaware LLC
NorthWestern Generation I, LLC	Delaware LLC
Montana Megawatts I, LLC	Delaware LLC
NorthWestern Energy Marketing, LLC	Delaware LLC
Canadian-Montana Pipe Line Corporation	Canada
Risk Partners Assurance, Ltd.	Bermuda