Commonwealth Edison Co. v. Illinois Commerce Commission

Commonwealth Edison Company (ComEd) is a public utility company that distributes electricity to consumers in northern Illinois. ComEd petitioned the Illinois Commerce Commission (Commission) to restructure and alter the rates ComEd charges, seeking a $360 million increase. ComEd calculated its revenue requirement using 2006 as an historical “test year” and included certain new distribution assets, referred to as “plant.” These consolidated appeals arise from the Commission’s order granting an increase of about $274 million.

ComEd appeals the order, arguing that the Commission did not grant…