Free planning tool
Estimate an appliance’s energy use
Find out how many kilowatt-hours an appliance uses each day, month and year. This helps identify the best places to reduce consumption or prioritize backup power.
For devices with a thermostat, compressor, or variable-speed motor, use the average running watts rather than the maximum printed rating when you can.
A quick way to compare appliances
Run the calculator for each appliance group—lighting, refrigeration, entertainment, office equipment and kitchen devices—using typical daily hours. The biggest energy users are not always the devices that seem most powerful.
Use this with the other tools
Pair this estimate with the Electricity Cost Calculator to turn energy use into a bill impact, or add the essential load to the Battery Backup Runtime Calculator when planning outage coverage.