The comparison between bulb, CFL and LED Lights is based on energy consumption, life and how much fuel is needed.
A 100 Watt bulb burns 24*7 for a year:
consumes 100x24x365/1000 = 876 kwh of electricity.
While in 876 kwh of electricity, CFL can give lights for 3.3 years and LED Lights can give lights for 5 years.
The comparison between bulb, CFL and LED Lights is based on energy consumption, life and how much fuel is needed.
A 100 Watt bulb burns 24*7 for a year:
consumes 100x24x365/1000 = 876 kwh of electricity.
While in 876 kwh of electricity, CFL can give lights for 3.3 years and LED Lights can give lights for 5 years.