Use this calculator to estimate your savings, pay-off and lifespan for ENERGY STAR-qualified compact fluorescent lamps.
Savings are for wattages shown. Your actual savings will vary based on the wattages you purchase.
When comparing incandescent or halogen bulbs to ENERGY STAR qualified bulbs or fixtures,
compare the light output, or lumens, and not Watts. Watts equal the energy used, not the amount of light.