Best answer by talldave
If you have a very large TV, don't leave it on for long periods when you're not in the room. In standby it uses zilch.
Replace as many bulbs as you can with LED, but get ones with a 2700 colour temp if you don't want to feel like you're living in a dental surgery.
Buy more crockery & cutlery and run the dishwasher every other day.
Get a Geo Minim+ monitor and see what you're using, although only versions that "watch" the LED on your meter are accurate at low power consumption. It's the quiescent consumption ticking over 24 hours a day that adds up over the year!