In its first enforcement action under PURPA, the Federal Energy Regulatory Commission asked a federal court to reverse the Idaho utility commission's rejection of wind energy projects. The law requires utilities to purchase power from qualifying renewable and cogeneration projects at “avoided cost”—what it would have cost the utility to generate that power itself or buy it from another generator. FERC previously issued orders finding the state commission's actions violated PURPA, but the Idaho PUC has ignored the orders to date. States generally have leeway determining avoided cost, and utilities faced with large amounts of new wind generation are trying to lower the amount they have to pay.