Question Earthority!

“A compact fluorescent lamp (CFL), also known as a compact fluorescent light bulb or an energy saving lightbulb, is a type of fluorescent lamp that fits into a standard light bulb socket or plugs into a small lighting fixture. In comparison to incandescent light bulbs, CFLs have a longer rated life and use less electricity. CFLs might save enough money in electricity costs to make up for their higher initial price within about 500 hours of use, although the continuing decrease in the price of incandescent bulbs is increasing the payback time.”