One person switching to compact fluorescent lighting will save money and give the environment a boost. If every American home replaced just one traditional bulb with an Energy Star qualified conmpact fluorescent light (CFL) bulb, we would save more than $600 million on annual energy bills and enough energy to light more than 3 million homes for a year. CFL Bulbs 1. Use 75% less energy than incandescent bulbs. 2. Last up to 10 times longer than in- candescent bulbs and produce less heat. 3. Can save you $30 to $60 over the life of each bulb you install. 4. Help reduce the demand for electricity, delaying the need for new power plants. CFL bulbs contain a trace amount of mercury. Before you use them, learn how to properly dispose of broken bulbs at the Energy Star Web site, energystar.gov/cfls. The site also offers information about recycling CFL bulbs. Ameren Illinois Utilities.