Montana
- Our ownership interest in Colstrip Unit 4, a 740 MW demonstrated-capacity coal-fired power plant located in southeastern Montana, is expected to supply approximately 13% of our Montana base-load requirements through 2010 and approximately 25% thereafter.
- Our remaining customer load requirements are met with market purchases from third parties and include resources from wind generation, gas-fired generation and seasonal base-load hydro supply.
South Dakota
- We jointly own three coal-fired generating plants for electricity requirements in South Dakota.
- Big Stone Plant (Big Stone City, S.D.)
- Coyote Electric Generating Station (Beulah, N.D.)
- Neal Electric Generating Unit No. 4 (Sioux City, Iowa)
- We also wholly-own nine peaking/standby generating units located throughout our service territory used only during peak periods.
- We have a 20-year power purchase agreement for 25 MWs of electric supply from the Titan I Wind Project in Hand County, South Dakota.
- We have agreements with MidAmerican Energy Company for firm supply capacity during the summer months through 2012.
- We are a member of MidContinent Area Power Pool (MAPP).
- We used coal to generate approximately 99 percent of the electricity for South Dakota operations in 2009.
- Our natural gas and fuel oil peaking units provided the balance.
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