LED lights are the most energy-efficient bulbs available. They produce the same amount of light as incandescent bulbs using 90 percent less energy. Because unlike older technologies, most of the energy LEDs use goes into creating light, rather than wasting energy on heat.
Making the switch is easy. You can replace almost any bulb currently in use with LEDs, and they come in many different colours and styles. They might cost a bit more than a regular bulb, but they last up to 20 times longer so they’ll save you money in the long run.
10 gigatons of emissions is equivalent to the annual emissions all coal power plants operational on earth as of 2019.
LEDs use 90 percent less energy than incandescent bulbs for the same amount of light.
As LEDs replace less-efficient lighting, 10.2–10.8 gigatons of carbon dioxide emissions could be avoided in residences and 5.9–6.7 gigatons in commercial buildings.
Residential LEDs are ten more efficient than incandescent bulbs, and last 15-20 times longer.
Impact metric calculations
To determine the carbon emission reduction estimates related to switching to LED lights, the following calculation was performed:
(hours of bulb operation /day) x (number of bulbs to be replaced) x (days/months) x (wattage of Current bulb - wattage of LED bulb) x ((country-specific grid electricity emission factor in kg CO2/kWh) / (1000 Wh/kWh) = kg CO2e / month
For detailed calculations, references and assumptions, please see our Methodology.