July 02, 2019 11:05 Updated Follow Yes you can. The U.S. Department of Energy estimates that if every home in the U.S. changed just one incandescent bulb for a CFL, it would save enough electricity to light 7 million homes. Related articles How much electricity can I save using Compact Fluorescent Lights (CFLs)? What if a CFL bulb breaks? Are they dangerous? I heard they have mercury inside. Where do I find information regarding General State and Federal Surplus? I worked in Indiana six months. Then I worked six months in another state. How should I file my Indiana taxes? Where can I recycle?