- They look a little different and cost a little more than your standard incandescent light bulb, but compact fluorescent lights can save you a bundle of money on your energy bill. CFLs use 25 percent less energy and last almost 10 times longer, which means the savings just keep adding up year after year. Get The Goods on where you can use CFLs in your home to save the most. And get this, for a limited time Xcel Energy is even offering huge discounts on compact fluorescent bulbs, which means you can save even more money. Now that’s a bright idea.
(credit: Xcel Energy)