My darling (and quite worried) wife has been going around for the last month or so turning off all the lights in any of the 9 rooms we have that doesn't have a person in it. Drives me nuts, stumbling through a dark house fumbling around for a light switch!
I remember the old adage (that in principal is correct) that appliances that USE electricity, don't really use that much of it.
Tv's, radio, computers, routers, lights etc
Things that BURN electricity use loads. Kettles, hair dryers, washing machines, dishwashers, tumble driers, immersion heaters, basically anything that has a heating element.
So in order to reduce our usage, yesterday I itemised every single appliance, established its power input when it's on and roughly calculated how long each item might be used for.
We have LED lights throughout, but it was a surprise to her that using her hair drier for an extra 2 minutes more than wiped out the saving for leaving both our hall lights on for nearly 2 hours.
I'm always being reminded that I've left the sound system on in the workshop (3 hours). It actually cost 2.5 cents, but yes I suppose they all add up...