I don't have the data to look up, but I believe heating and cooling is the largest factor in energy consumption. This includes water heating as well as room cl

I don't have the data to look up, but I believe heating and cooling is the largest factor in energy consumption. This includes water heating as well as room climate control, so be sure to set those. The next largest would be appliances - dryer, washer, refrigerator, stove, oven in no particular order. Lights are a smaller part overall, but as dmfdmf said, power companies have different rates at different times of the day depending on the demand. They may or may not pass those rates down to end consumers - the hack is to use more during off peak/load hours and use less when it is expensive. disclaimer: I work at a company that does this analysis for utilities to lower consumer consumption overall - we happen to have an Australian client as well.