Did you know?
CFLs (Compact Fluorescent Lightbulbs) save as much as 80% on energy over incandescents. However, this is not because they are more efficient at giving off light; rather, it is because they don't waste as much electricity as heat. Most of the losses in incandescent lighting come from this heat, not from inefficiencies in the light generation. For this reason, incandescents use a similar amount of energy to CFLs in the first few minutes they are turned on; it is only after the bulbs heat up that incandescents begin to waste.