The average U.S. household uses approximately 29,130 watts of electricity per day, but this may vary based on your equipment and habits. For example: Large, older refrigerators use more watts than smaller, newer refrigerators. Running your air conditioner throughout the day uses more watts than using it for short periods of time. More people usually means more appliance usage.So, while 29,130 watts is a good average, it’s important to consider your specific situation to get a more accurate idea of your home’s wattage needs.