Turning off the lights has become synonymous with saving energy, but buying the right bulbs can also make a difference. Wattage helps us determine brightness of incandescent bulbs. LEDs and other energy-efficient bulbs use a measurement called lumens to determine how much light a bulb produces.
Bulbs with the same lumen output will produce the same amount of light, even if they have different wattage ratings. Switching to a lower-wattage LED that produces the lumens you need can save you money every time you flip the switch.