DAYTON, Ohio--(BUSINESS WIRE)--Dayton Power and Light (DP&L), a subsidiary of The AES Corporation (NYSE: AES), is offering residential customers a great way to save on energy costs this Labor Day by purchasing a high efficiency ENERGY STAR® refrigerator or clothes washer or a Wi-Fi enabled thermostat. DP&L’s limited-time rebate program runs through October and rewards customers with $50 for the purchase of: ENERGY STAR certified refrigerators ENERGY STAR certified clothes washers Wi-Fi