Question: how to figure out how many watts your house uses?
Answer: Calculate the kWh use for each appliance. The formula for kWh is watts multiplied by hours used and then divided by 1000. For instance, a 100-watt light bulb used for 10 hours would use one kWh. Add all of the kWh totals from your appliances to get an idea of your electrical load that you use every day.