Many home appliances are energy guzzlers.
Some appliances use energy even when you're not using them - drawing power when left on at the wall on 'stand by'. Others use a great deal more than they should because they don't use energy efficiently.
You can save by choosing energy-efficient appliances and choosing the right sized model for your household.
You can also save, without inconveniencing yourself, by using appliances wisely - for example, by not putting hot food in your fridge or by heating food in your microwave rather than your oven.