Pursuant to the Commission's order in Docket No. 03-0303, each electric utility is required to file a monthly report showing the supply options chosen by the utility’s customers.  For the Ameren Companies (AmerenCILCO, AmerenCIPS and AmerenIP) and Commonwealth Edison Company, the reports show the number of customers and associated load receiving hourly service, fixed price generation service from the utility or service from a Retail Electric Supplier (RES).