To learn more about electronic ballasts visit:
- ENERGY STAR Qualified Products
- National Lighting Product Information Program: "Electronic Ballasts" Fact Sheet
- National Lighting Product Information Program: "Guide to Specifying High-Frequency Electronic Ballasts"
You may be able to "de-lamp" or remove some of the lamps in your system and still have acceptable light levels, especially in concert with a T8 retrofit. Consult your lighting professional to see if this is an option for your facility.