An LED light bulb can last you up to 50,000 hours compared to 8,000 for Compact Fluorescent and 1,000 for a Incandescent. That averages out to 12 hours of light per day for 11 years. LED light bulbs are so energy efficient that, depending on how often you have them on, they'll actually pay for themselves in just over a year.

 

Cost Saving using Led

This comparison is the energy saving replacing a 50 watt incandescent light bulb with an equivalent LED light with a cost of 15 cents a kilowatt hour.

Your cost per year for 50 watt = $32.85

Cost for equivalent 4 watt LED = $2.63

Saving per Year using LED = $30.22

If you have 30 lights in your house =$906.60 saving per year

This does not take into consideration that the LED will operate 11 years at an operating time of 12 hours per day.