Lighting Education

Brightness (Lumens)
Bulb Finish
Bulb Size
Bulb Type
CRI Color Rendering Index
Color Temperature (KELVIN)
Energy Costs
ENERGY STAR^®
Lighting Facts Label
Lumen Maintenance & L70 Rating
Watts

The amount of energy (or electrical power) that a light bulb uses. The lower the watts, the lower the electric bill.

Which Bulbs are More Efficient?

CFLs and LEDs have a lower wattage than incandescent bulbs, but emit the same amount of brightness (or light output), because they are more efficient.