If every American home replaced just one light bulb with an ENERGY STAR® CFL bulb, we would save almost six billion kWh per year—enough energy to light nearly three million homes. We’d also save more than $600 million in annual energy costs and reduce greenhouse gases by the equivalent of nearly 750,000 cars. The average CFL lasts 10,000 hours, and when you replace it, you can recycle it!
