Check which appliances you use, adjust hours, and see your estimated total monthly electricity cost.
Each appliance has a typical wattage and daily usage estimate. Check the appliances you use, adjust hours if needed, and the calculator totals your monthly electricity cost using: Cost = (Watts / 1000) x Hours/day x 30 x Rate.
The average American household uses about 886 kWh of electricity per month, costing approximately $142 at the national average rate. However, this varies enormously by region, home size, climate, and lifestyle. Homes in hot climates with air conditioning can use 50-100% more electricity than the national average, while smaller homes in mild climates may use significantly less. Knowing which appliances consume the most energy empowers you to target the biggest cost drivers.
Heating and cooling systems are by far the largest electricity consumers in most homes, accounting for roughly 46% of total energy use. A central air conditioning system running 8 hours a day can cost $100 or more per month alone. Water heating is the second largest category at about 14%, followed by appliances like refrigerators, washing machines, and dryers at 13%, and lighting at 9%. Electronics and miscellaneous devices make up the remaining 18%.
Many homeowners are surprised to discover that "phantom loads" -- electronics that draw power even when turned off or in standby mode -- can account for 5-10% of their electricity bill. Cable boxes, game consoles, smart speakers, phone chargers, and printers all draw small amounts of power continuously. While each device may only use 5-25 watts in standby, dozens of them running 24/7 adds up. Using smart power strips or unplugging devices when not in use can save $100-200 per year.
Central air conditioning is typically the largest single electricity consumer, using 3,000-5,000 watts. Electric water heaters, clothes dryers, and space heaters are also major consumers at 2,000-5,500 watts each.
Focus on the biggest consumers: optimize heating/cooling (programmable thermostat), switch to LED lighting, use Energy Star appliances, unplug phantom loads, and wash clothes in cold water.
Check the label on the appliance (usually on the back or bottom), look in the owner's manual, or check the manufacturer's website. You can also use a plug-in electricity usage monitor (like a Kill-A-Watt) for exact measurements.