Quote:
Originally Posted by pdurrant
I'm astonished people are still using them. I haven't used incandescent bulbs for the past 13 years. And now the cost advantage of compact fluorescents over incandescents is compelling.
Electricity is currently around 10p per kwH
A 100W incandescent costs £0.89, lasts for 1000 hours and costs 1p per hour
A 20W fluoresent costs £5.35 and lasts 8000 hours, and costs 0.2p per hour
So the 'pay-back' time for the fluorescent is less than 600 hours - shorter than the lifetime of the incandescent.
(cost of incandescent for 600 hours = £0.89 + 600*£0.01 = £6.89
cost of fluorescent for 600 hours = £5.35 + 600*£0.002 = £6.55) |
Don't forget the production of those fluorescent lamps. They are highly toxic.
And don't forget that turning those lamps on and off lots of times (like in a bathroom) will shorten their lifetime drastically.
Also don't forget that they are generally larger (in size) than a normal bulb, I have fixtures that can't hold a fluorescent lamp. (the one I have now just barely fits in the fixture and it's a large hanging lamp...)