Hey folks, I think we are getting confused here. The Delco system was an early battery/generator system for providing lighting in rural areas where city electricity wasn't yet available. There was a bank of batteries which provided lighting for the house and a small gasoline or kerosene powered generator which kicked in to charge the batteries when they got low. The system was introduced about 1916 and remained popular until Rural Electrification came in during the depression. The name Delco is the same company which still makes car batteries, [:-monkeydetc. Edison's DC power was a plant which provided direct current to a number of households at a time and was not really anything like the Delco system. Of course when AC proved to be superior in transmitting power for long distances Edison's DC power was dropped.