When replacing standard fluorescents with energy-efficient lamps, it's necessary to replace the existing ballasts. When doing so, be sure to specify electronic ballasts. Simple payback periods on these improvements can be as short as 1 to 2 years. In other words, use smaller, more efficient lights that bring the light source closer to the work area requiring illumination. This concept applies to such areas as offices, workrooms, and garages.
Compact fluorescents can be a good alternative to incandescent light bulbs.
Compact fluorescents last about 10 times longer than incandescent lamps. Lights that operate much of the time, such as in hallways or stairwells, are popular applications for compact fluorescent lamps. Lighting controls Manual controls can be used in spaces that accommodate different tasks or that have access to daylight. In this way, occupants can manually shut lights off when they aren't needed. Autodimming controls are available that automatically adjust light levels according to existing daylight.