EchoSun Energy and Green Ballast, Inc. have announced that EchoSun Energy has selected the daylight harvesting ballast developed by Green Ballast, Inc. to be integrated into its EchoSun 2 and EchoSun 2LED lighting products. Green Ballast was chosen after Apollo conducted rigorous ballast evaluations to determine the extent to which the ballast's continuous control system and wireless communication functions would meet the general specification requirements of EchoSun Energy to control the electrical light source, both fluorescent and LED.