How much energy can be saved by switching from T12 lights and magnetic ballasts to T8 lights and electronic ballasts?
If you replace your existing T12 lighting system with T8 lights and magnetic ballasts with electronic ballasts, you will see a reduction of lighting energy by 17 to 48 percent depending on the specific lights and ballasts. In some instances, you may want to remove some of the existing T12 lights and not replace them. You may also use one electronic ballast to serve four lights instead of one magnetic ballast for two lights previously installed. Or, you may use specular reflectors to further enhance light distribution. The overall result may bring 50 percent savings without compromising the quality of delivered light.