I just today bougth my very first LED ligthbulb. Itīs a freaking low 7W and is replacing a 40W normal ligth bulb.
Compared to "normal" energysaving ligthbulbs this one can last 30.000 hours, which basicly means that if I use it for 6 hours a day - I will just have to replace it......in 13 years!! They also have the benefit that they turn on instant - compared to "normal" energysaving ligthbulb who need some 5-7 seconds to get up to speed so to speak..
I am really excited about this bulb, and will definately buy some more as replacements are needed..
Just for the heck of it...I listed ALL my bulbs in a spreadsheet with wattage. I then added a column for LED bulbs in the same places....The energy saved could amount as much as 450$ a year! And that is one ligthbulbs alone!! And if the energy price keeps going up, then the amount of saved $ get even higher....!