Switch to energy-saving halogen incandescent light bulbs to cut lighting energy use by 25 percent. These bulbs last three times longer than traditional incandescent bulbs and can easily be dimmed. Want to save more? Compact fluorescent lamps (CFLs) and light- emitting diodes (LEDs) cut lighting energy use by at least 75 percent. Learn more at energysavers.gov.
Source: U.S. Department of Energy