How much does it cost per hour to run an 11W energy saving bulb? How does this compare to a normal 100W light bulb.
2006-10-11 08:59:33 · 10 answers · asked by the demon 1 in Science & Mathematics ➔ Physics
Typically five times energy wise and up to eight times lifetime. A 12 watt low energy lamp will give the light equivalent to a 60 watt tungsten lamp, and will last about 10 times as long. The additional cost of the lamp coupled with the reduction in energy costs result in a saving of about 70% over its life of appx. 8000 hours. A normal lamp has a life of about 1000 hours.
1) low energy 12 watt lamp £4.00 max. 8000 hours energy @ 8p/kwh = £7.68 Total £11.68
2) 8 x 60watt gls lamps @ 35p = £2.80 + 8000 hours energy @ 8p/kwh £38.40 Total £41.20
(You can't compare an 11 watt l/e to a 100 watt lamp. you would have to compare a 100 watt with a 20 watt)
2006-10-11 09:29:03 · answer #1 · answered by jayktee96 7 · 5⤊ 0⤋
An 11Watt energy saving light bulb will use 11/100 of the power of a 100W light bulb. The mean time before failure of a standard 100W light bulb is about 1000 hours, whereas the life expectancy of a energy saving bulb can be 10,000 hours.
The cost of a standard light bulb is about 50p, therefore, it has a lifetime cost of 2.005 pence per hour. The energy saving bulb has a lifetime cost of 0.027 pence per hour. but the initial outlay is more.
All because the energy efficient light bulb doesn't get hot.
2006-10-15 12:07:20 · answer #2 · answered by Andy S 2 · 0⤊ 0⤋
An 11W bulb in 9 times cheaper than a 100W bulb.
How much it costs depends on your price for electricity.
2006-10-11 16:03:06 · answer #3 · answered by bird_brain_88 3 · 0⤊ 0⤋
I heard that if every home changed one of their reguler bulbs with a energy saving bulb, that would be the equivalent of taking 1 million cars off of Americas roads.
2006-10-11 16:27:41 · answer #4 · answered by accrv 2 · 0⤊ 0⤋
it uses less energy, and i believe they are more expensive, but i think it's worth it. you could save a lot of money in the end!
2006-10-11 16:07:00 · answer #5 · answered by Ash~ley 2 · 0⤊ 0⤋
Mine have lasted years and years
2006-10-11 16:08:07 · answer #6 · answered by MANC & PROUD 6 · 0⤊ 0⤋
it cots a lot less and your bills will go down differnt in each covernment
2006-10-11 16:08:47 · answer #7 · answered by yerfacesawscrewedupyabamye 2 · 0⤊ 0⤋
Hi there,
Follow this link and see how much you save.
http://www.lyco.co.uk/calculator.php
2006-10-11 16:09:33 · answer #8 · answered by binnybanny 2 · 0⤊ 0⤋
probably ok, but they cost alot for a good one
2006-10-11 16:01:42 · answer #9 · answered by Anonymous · 0⤊ 0⤋
it uses 89w less
2006-10-11 16:01:59 · answer #10 · answered by Anonymous · 0⤊ 0⤋