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MidAmerican Energy Iowa Wind-Powered Electric Generation MidAmerican Energy Company is No. 1 in the nation in ownership of wind-powered electric generation among regulated utilities. The company solidified its wind energy leadership by adding 623.3 megawatts of wind generation in Iowa during 2008. In December 2009, MidAmerican Energy Company received approval from the Iowa Utilities Board to add up to 1,001 megawatts of wind generation prior to 2013 to enhance the company’s balanced generation portfolio. (continued on back)

One of MidAmerican Energy Company's wind projects in Iowa

Wind Projects Owned by MidAmerican Energy Company • 75 megawatts • 50 turbines

• 256.5 megawatts • 171 turbines

• 200 megawatts • 145 turbines

• 175.5 megawatts • 122 turbines • 99 megawatts • 66 turbines

• 0.5 megawatts • 1 turbine


• 174.8 megawatts • 76 turbines

• 150 megawatts • 100 turbines • 153 megawatts • 102 turbines

MidAmerican Energy Company Service Territory

Buena Vista and Sac counties

Floyd County

Pocahontas County

Wright and Hamilton counties

Crawford and Carroll counties

Polk County

Pottawattamie County

Adair and Cass counties

Total = 1,284.3 megawatts

May 2010

MidAmerican has 1,393.3 megawatts of wind energy facilities in operation in Iowa. • 1,284.3 megawatts – owned and operated by MidAmerican Energy • 109 megawatts – power purchase agreement The existing 1,284.3 megawatts of owned wind energy facilities are located at eight sites in northwest, north central, west central, northeast Iowa and the Iowa State Fairgrounds. The last electric rate increase MidAmerican Energy’s Iowa customers experienced was in 1995, and the company has committed to keeping base electric rates stable. Go to to take a guided virtual tour through a wind facility and experience how wind is used to generate electricity for homes and businesses.

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