July 22, 2019 05:11 Updated Follow A CFL uses 1/3 the power of a traditional incandescent light of comparable light value. A CFL bulb that gives off the same light as a 60-watt incandescent uses only 13 watts. Related articles Can I really make a difference by changing my lights? What is the wage gap? Don't CFL bulbs cost a lot more than incandescent bulbs? What if a CFL bulb breaks? Are they dangerous? I heard they have mercury inside.