Electric and Natural Gas Distribution
Offering electricity and natural gas to homeowners and to commercial and industrial businesses is the legacy base from which the MDU Resources family of companies developed.
Currently, our utility operations span eight states and are offered through four companies:
Montana-Dakota Utilities Co.
Great Plains Natural Gas Co.
Cascade Natural Gas Corp.
Intermountain Gas Co.
Montana-Dakota and Great Plains serve more than 267,000 natural gas customers and 125,000 electric customers in five Upper Midwest states. Cascade serves 260,000 customers in Washington and Oregon. Intermountain Gas serves more than 312,000 natural gas customers in Idaho.
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 Electric and Natural Gas Distirbution Area |
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 Electric generating stations |
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(as of October 31, 2008) |
Montana-Dakota Utilities
Montana-Dakota generates, transmits and distributes electricity and distributes natural gas to more than 250 communities in Montana, North Dakota, South Dakota and Wyoming. Headquarters for Montana-Dakota are in Bismarck, N.D.
Regions:
- Dakota Heartland – Based in Bismarck, N.D., serving electricity and natural gas.
- Badlands – Based in Dickinson, N.D., serving electricity, natural gas and propane.
- Black Hills – Based in Rapid City, S.D., serving natural gas.
- Rocky Mountain – Based in Billings, Mont., serving natural gas; natural gas and electricity in the Sheridan, Wyo., area.
Electric Generating Facilities:
- R.M. Heskett Station – Based in Mandan, N.D., generates 100 megawatts.
- Lewis & Clark Station – Based in Sidney, Mont., generates 50 megawatts.
- Glendive Combustion Turbines – Based in Glendive, Mont., generates 75 megawatts.
- Miles City Combustion Turbine – Based in Miles City, Mont., generates 25 megawatts.
- Diamond Willow Wind Farm – Based near Baker, Mont., generates 19.5 megawatts.
- Heat-Recovery Generation – Based near Glen Ullin, N.D., generates 5.3 megawatts.
The company also co-owns a portion of its electric generating capacity with other utilities (Big Stone Plant and Coyote Station).
Great Plains Natural Gas
Great Plains Natural Gas distributes natural gas in western Minnesota and southeastern North Dakota. The company operates as both a local distribution company and a transporter of natural gas to industrial, commercial and residential customers in 19 Minnesota and North Dakota communities. Each community is an agricultural processing center and a regional retail center.
Great Plains has about 23,000 customers and receives its natural gas supplies from three transmission pipelines. Its general headquarters are in Fergus Falls, Minn.
Cascade Natural Gas
Cascade serves more than 260,000 customers in 93 communities – 65 of which are in Washington and 28 in Oregon. Cascade's service areas are concentrated in western and south central Washington and south central and eastern Oregon.
Cascade serves a diverse territory covering more than 32,000 square miles and 700 highway miles from one end of the system to the other. Interstate pipelines transmit Cascade's natural gas from production areas in the Rocky Mountains and western Canada.
Customers are served from four operational regions:
- Western – The Kitsap Peninsula, the Grays Harbor area, and Kelso/Longview.
- Northwest – Bellingham, Mt. Vernon, and Oak Harbor/Anacortes.
- Central – Sunnyside, Wenatchee/Moses Lake, Kennewick, Walla Walla and Yakima areas.
- Southern – Bend and surrounding communities, Ontario, Baker and the Pendleton/Hermiston areas.
General headquarters for Cascade are in Seattle.
Intermountain Gas Company
Beginning operations in 1956, Intermountain is a natural gas utility serving 74 cities in 23 counties in southern Idaho. The service territory encompasses 60,000 square miles, with a population of more than 1.1 million.
The company is based in Boise, Idaho.
Intermountain’s major operating areas are:
- Western Region – The western Snake and lower Payette River valleys, the Boise-Nampa MSA, and eastward through Mountain Home to Glenns Ferry.
- Central Division – The central Snake River Valley, Twin Falls/Burley, the Wood River Valley and Sun Valley.
- Eastern Region – The eastern and upper Snake River Valleys from Pocatello to Idaho Falls, Rexburg and St. Anthony, and southeast to Soda Springs and Montpelier.
Intermountain serves a number of industrial customers, including potato processing facilities, dairies, meat processing facilities, chemical companies, fertilizer makers and electronics manufacturers.
Intermountain owns and operates a 6 million-therm liquefied natural gas storage facility near Nampa, Idaho. Intermountain also owns and operates 5,900 miles of transmission laterals, distribution lines and services.