Household energy cost calculators
Work out what electricity, heating, EV charging and solar really cost in your state, using official price data and formulas you can check.
The average U.S. residential electricity price was 18.16¢/kWh in August 2026 (EIA), from 12.72¢/kWh in Nevada to 47.18¢/kWh in Hawaii.
Electricity costs
- Electricity rates by stateLatest residential price per kWh in all 50 states and DC, with trends and rankings.
- Electric bill calculatorEstimate your monthly bill from your usage and your state’s average price.
- Appliance electricity cost calculatorWhat any device costs to run per hour, month and year.
- U.S. electricity price statisticsMonthly rankings, biggest changes and downloadable data.
Electric vehicles
Solar
- Solar payback calculatorYears to pay back a rooftop system, with 2026 federal credit rules.
- Solar panel size calculatorSystem size and panel count to cover your electricity use.
- Solar lease vs buyCompare buying rooftop solar with leasing it over the contract term.
- Home battery backup sizingBattery capacity needed to keep essential loads running during an outage.
Heating & cooling
- Heat pump vs gas furnace costAnnual heating cost of a heat pump versus a gas furnace in your state.
- Space heater & AC running costWhat a space heater or air conditioner costs per hour, month and season.
- Heat pump size (BTU) calculatorA first estimate of the heating and cooling capacity your home needs.
- Water heater cost comparisonHeat pump vs gas vs electric resistance water heater running costs.
Energy upgrade finance
How this site works
Every number on this site comes from a public dataset or from a formula we publish. Prices are refreshed monthly from the U.S. Energy Information Administration, and each table and chart shows its source and period. All calculator inputs can be changed to match your own bill.