There are different ways how you can monitor your energy usage at home. You can (or rather your energy supplier) install a smart meter, electricity monitor or use a plug-in electricity power consumption meter. The first two (smart meter and electricity monitor) monitor your whole house electricity usage and a plug-in meter tells you exactly how many kWh a particular device or appliance is drawing. Whatever tool you’ve got, it will help you keep track of how much energy you’re using at home.