DES MOINES, Iowa (AP) — MidAmerican Energy says it has completed three Iowa wind projects generating 407 megawatts of electricity, enough to power more than 100,000 homes. CEO Bill Fehrman says wind power now makes up about a third of the electricity generated by the company, which provides power to 732,000 customers in Iowa, Illinois, Nebraska and South Dakota.

In January 2012 the company announced it had acquired three wind projects in west central, central, and southwest Iowa that would include construction of 176 wind turbines. They included a 106-megawatt Vienna wind project, located in Marshall and Tama counties; a 200-megawatt Eclipse wind project, located in Guthrie and Audubon counties; and a 101-megawatt Morning Light wind projects, located in Adair County.

MidAmerican Energy also owns Iowa wind projects in Buena Vista, Carroll, Crawford, Floyd, Hamilton, Polk, Pottawattamie, Sac and Wright counties totaling 1,284 megawatts of wind generation.

Over the past two years Des Moines-based MidAmerican has added more than 430 wind turbines to its generation network. The company began building wind farms in 2004 and has invested about $3.9 billion in Iowa wind generation.