South Dakota's PUC has approved a 260-megawatt (MW) wind farm that will become one of the largest in the wind-friendly state.

Chicago-based Invenergy applied to build the project through its South Dakota subsidiary, Deuel Harvest Wind Energy South. The turbines will be spread across 46 square miles of privately owned land ...

In northeast Montana, wind chills as low as 58 below were expected. Portions of central and east central South Dakota, as well as a portion of southwest Minnesota could see chills as low as 45 below.