kiwifidget:
We spent a small fortune about 2 years ago replacing all our light bulbs (mostly halogens and some normal ones) with LED bulbs.
There was no drop in the power bill at all.
On the upside we haven't had to replace an LED bulb yet.
You're not doing what I do with the low power ones and going "Oh F... it, they are low power, why bother turning them off" all the time are you?
Ive changed everything I can here out now except the garage lights which are still old t8 fluros because I'm still looking for LED replacements that dont flicker as much or more than the fluro they are replacing.