How much Co2 can you save  a year by replacing all your light bulbs with LED bulbs?

Data

  • Average kWh per home per year for lighting is 1700 kWh1
  • EU Co2e emissions due to electricity generation is 0.296 kg Co2 per kWh2
  • Average power consumption of 800-lumen (60-watt equivalent) LED bulb is 8.35 W3

LED efficiency factor

The LED efficiency factor is used to convert regular light bulb w consumption to LED watt consumption.
x = LED efficiency factor
60 W * x = 8.35 W | /60
x = 0.139

Average kWh per home per year for lighting with LED lighting

Average kWh per home per year for lighting * LED efficiency factor
1700 kWh * 0.139 = 236.3 kWh

kWH’s saved by switching to LED for a year

Average kWh per home per year for lighting – Average kWh per home per year for lighting with LED lighting
1700 kWh – 236.3 kWh = 1463.7 kWH

Co2 saved by switching to LED for a year

kWH’s saved by switching to LED for a year * EU Co2e emissions due to electricity generation
1463,7 * 0,296 = 433,2 kg Co2e

You can save approximately 433,2 kg Co2e a year in your household by switching to LED bulbs. You can save 433,2 kg Co2e a year by switching to LED bulbs.

Sources

  1. U.S. department of energy [2012]
  2. Rensmart (data supplied by the European Environment Agency) [2016]
  3. Kompulsa