MidAmerican Energy has signed a contract with Siemens to build 258 wind turbines with a 593MW capacity in western and central Iowa, US.

The wind turbines will be installed in Cass, Adams, Marshall, Calhoun and Adair and will generate energy sufficient to power 0.19 million homes.

Siemens Renewable Energy Division CEO René Umlauft said that the turbines ordered by MidAmerican will be built at plants in Fort Madison, Iowa, and in Hutchinson, Kansas.

Iowa Wind Energy Association executive director Harold Prior said that the deal is significant as it would increase Iowa’s production capacity of 3,760MW by almost 16%.

The Hutchinson plant will produce the turbines’ nacelles, which hold all the equipment for turning wind power into electricity, while the Fort Madison plant will produce the turbines’ blades.