The California cities of Anaheim, Azusa, Banning, Colton, and Riverside presented their oral arguments before the U.S. Court of Appeals for the District of Columbia Circuit last week in a case involving the Federal Energy Regulatory Commission. The cities requested the court overturn an agency order that required them to pay electric transmission constraint costs. In 2006, the commission ordered Southern California Edison Co. to pay constraint charges; a rehearing in 2007 resulted in the reversing of the order from a local spread to a zonal cost allocation.