Shocking-but-True✓✓ 2 independent sources
The LED switchover quietly cut lighting's energy bill by up to 90%
-75% to -90% energy per bulb (LED vs incandescent/standard)
The U.S. Department of Energy calls LED 'a highly energy-efficient lighting technology': residential LEDs use at least 75% less energy than incandescent lamps, and a good-quality LED can last 30 times longer. The EPA's ENERGY STAR program certifies bulbs that use up to 90% less energy than standard bulbs while saving about $55 in electricity costs over their lifetime.
ENERGY STAR-certified bulbs use up to 90% less energy than standard bulbs; DOE says residential LEDs use at least 75% less energy than incandescents - and last 30x longer.