What is the most energy efficient light bulb?

The electricity used over the lifetime of a single incandescent bulb costs 5 to 10 times the original purchase price of the bulb itself. Light Emitting Diode (LED) and Compact Fluorescent Lights (CFL) bulbs have revolutionized energy-efficient lighting. CFLs are simply miniature versions of full-sized fluorescents. read more

You have many choices in energy-efficient lighting. The most popular light bulbs available are halogen incandescents, compact fluorescent lamps (CFLs), and light-emitting diodes (LEDs). Although they can initially cost more than traditional incandescent bulbs, during their lifetime they save you money, because they use less energy. read more

The GHRI tested 28 soft white halogen, compact fluorescent (CFL), and light-emitting diode (LED) bulbs that claimed light output similar to that of best-selling, traditional 60-watt incandescents. read more

In practical application, when buying a light bulb, look for bulbs that produce more light but consume less energy. Understanding lumens as a measure of brightness makes it easier to select the most efficient bulb for your application. read more