Save-Lighting

Replace incandescent lighting with high efficient fluorescent or LED lighting. An 18-watt compact fluorescent, for instance, puts out as much light as a 60-watt incandescent. Also, good quality fluorescent lamps last almost thirteen times longer than incandescent lamps, which means even more savings can be achieved in replacement costs.
Increase the output of your lights by regularly removing grease, dust and other dirt from bulbs, fixtures, lenses, lamps and reflective surfaces.
Use natural lighting wherever possible.
Install occupancy sensors in offices and other low traffic areas that will keep lighting off when not needed.