It's a tough question and would depend on usage as well as equipment. Obviously air conditioning sucks up power but the big culprits are the water heater (on electric) and the propane electric fridge (on electric). If you have a residential fridge you will have an advantage as they use about a quarter of the power of a propane electric when run on electric. Washer dryer. Even TV depending on size and age can contribute considerably to the bill. However, if you are on metered you will definetly pay more attention to your usage. :).