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Electric and Natural Gas Utilities

Our utility companies serve more than 1 million customers across eight states. Cascade Natural Gas Corporation distributes natural gas in Oregon and Washington. Great Plains Natural Gas Co. distributes natural gas in western Minnesota and southeastern North Dakota. Intermountain Gas Company distributes natural gas in southern Idaho. Montana-Dakota Utilities Co. generates, transmits and distributes electricity and distributes natural gas in Montana, North Dakota, South Dakota and Wyoming. These operations also supply related value-added services.

Our Utilities

For more information about our utility companies, visit these websites:

  • www.cngc.com
  • www.gpng.com
  • www.intgas.com
  • www.montana-dakota.com