What are the major differences between HID ballast and electronic ballast?
Frequency output to the lamp and energy conversion from electricity to usable light are the biggest differences between HID ballast and electronic ballasts. HID ballast produces a frequency of 60Hz. Electronic ballasts vary from manufacturer to manufacturer, but the frequency produced can be 400x that of an HID Ballast. HID ballast produce more heat than electronic ballast, thus making electronic ballasts more energy efficient. You’re not likely, however, to save money on your electric bill by using electronic ballast. HID ballast have been around over 60 years, while electronic ballast (esp. 400watt and higher) is relatively new technology.