See Commonwealth Edison Company, Schedule of Rates for Electric Service, Ill. C. C. No. 10, 1st Revised Sheet No. 148: However, in certain individual situati

See Commonwealth Edison Company, Schedule of Rates for Electric Service, Ill. C. C. No. 10, 1st Revised Sheet No. 148: However, in certain individual situations, certain retail customers in the central part of the City of Chicago are provided with direct current (DC) electric service. Such retail customers are provided with electric service through rectifiers that convert AC to DC. Such retail customers have been provided with DC electric service since the early years of the twentieth century. Beginning in the 1930's, the Company has been working toward the retirement of DC electric service. The Company does not serve new or increased electric power and energy requirements of any retail customer with DC electric service. For a situation in which DC electric service is retired at a retail customer's premises, the Company removes its rectifier and associated AC to DC conversion equipment that had been used to provide electric service to such premises. Eventually, all such rectifiers and associated AC to DC conversion equipment will be so removed, and all retail customers will be provided with AC electric service. I think the customer pays for the rectifier losses, though. According to Sheet No. 191: For a situation in which DC is provided through a rectifier, meter-related facilities are located on the AC side of the rectifier. — https://www.comed.com/Documents/customer-service/rates-pricing/rates-information/current/Ratebook.pdf https://www.comed.com/Documents/customer-service/rates-prici...