Electricity & Outage Calculators
Size a generator or battery backup for the next outage, estimate your electricity bill and see what your appliances cost to run.
- Electricity Bill Calculator Pick your state and network, enter the kWh you used and get an estimated monthly electricity bill.
- Home Energy Use Calculator Estimate monthly kWh and cost from common household appliances and your own devices.
- Generator Size Calculator Add the appliances you need during an outage and find the running and starting watts your generator must supply.
- Battery Backup Runtime Calculator How long a portable power station, UPS or home battery will run your devices during a power outage.
- Air Conditioner Cost Calculator Estimate central or window AC energy use and monthly cost from BTUs, SEER2 rating and hours.
- Space Heater Cost Calculator Calculate what an electric space heater costs to run per hour, day and month.
- Electric Water Heater Cost Calculator Estimate the electricity an electric tank or heat-pump water heater uses each month.
- EV Charging Cost Calculator Estimate the cost of charging an electric vehicle at home per charge, per mile and per month.
- Solar Savings Calculator Estimate rooftop solar production, bill savings, net-metering credits and payback time.
- Electricity Bill to kWh Calculator Work out roughly how many kilowatt-hours a bill amount represents after fixed charges and taxes.
- Electricity Rates by State Compare average residential electricity prices in every state.
State electricity bill calculators
Territories
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