“Super T8” ballasts are a great opportunity for energy savings in both T12 retrofits or your current fixtures. A low ballast factor “super T8” ballast is perfect for a retrofit conversion for T12 to T8 since it is tuned to provide the same amount of light as the T12 with few watts. Instead of replace-with-same in your current fixture, “super T8” ballast with high ballast factor produces the same light output as standard ballasts using 7% less energy. If the current T8 application is over-lit, a “super T8” ballast with a low ballast factor offers opportunity for even more energy savings.
Controls are still vastly untapped as an opportunity for energy savings, although they need some thought and planning to be done right.