Here's a bright(er) idea: Switch to LEDs, CFLs or halogen bulbs instead.
Ninety percent of the electricity used by incandescent light bulbs is given off as heat, which is wasted energy and money. Here's a bright(er) idea: Switch to LEDs, CFLs or halogen bulbs instead. They use as little as 20 percent of the electricity — reducing your energy bill and your carbon footprint.