2. Install CFLs or LED Lights Where You Can
New lighting technology has really come a long ways. Now although they do cost more than traditional incandescent bulbs, CFL and LED bulbs can last for years without having to replace them. You don’t even need to replace every bulb in the house at once. Even swapping just your four or five most-used light bulbs can save you $45 or more a year!
CFL vs. LED
CFLs, which use a quarter of the energy of incandescent bulbs and last for years, are the next cheapest option after traditional bulbs. But they also have some drawbacks: They take a while to warm up to full brightness, and they also contain a small amount of mercury.
Meanwhile, LEDs are more expensive. However, they’re getting cheaper all the time, and they are easily the best lighting option available: They light up instantly, are efficient as CFLs, produce a warm glow without getting hot to the touch, and can last for decades.