Home Energy Cost Calculators
Electricity prices differ by more than a factor of four across the United States, so the same appliance can cost dramatically more to run in one state than another. These calculators use the current published residential rate for your state and are explicit about how much of the answer is measurement and how much is assumption.
Start here
AC running cost
Estimate what your air conditioning costs to run per month and per year, using cooling degree days for your state and the current residential electricity rate.
$700typical · per year, at your rate and climate
What it costs now, and what replacing it would save
Running cost on its own does not tell you whether to replace something. Work out what the current appliance costs, then put a new one against it including what the new one costs to buy.
- Appliance running costFind out what any appliance costs to run per hour, day, month, or year, using the current residential electricity rate for your state.
- Upgrade savingsFind out whether replacing an old appliance pays for itself. Compares running costs, shows the payback period, and gives the net benefit over the appliance’s life.
Everything else in Energy Costs
- Refrigerator costWork out what your refrigerator costs to run per year by age, size, and configuration, and compare it against a current ENERGY STAR model.
- Pool pump costEstimate what your pool pump costs to run, and compare single-speed against variable-speed at your electricity rate and season length.
- EV chargingWork out what charging an electric vehicle costs per mile, month, and year at your state’s electricity rate, with a gasoline comparison.
How these estimates are built
Electricity prices differ by more than a factor of four across the United States, so every figure here uses the current published residential rate for your state rather than a national average. Cooling and heating load additionally use NOAA degree days for your climate.
Where no public agency publishes what a calculation needs, we say so plainly and label the figure as an assumption rather than dressing it up as sourced. Every result shows its own provenance, and our full method is documented.
- Primary dataset
- EIA residential electricity prices
- June 2026
- Coverage
- 51 jurisdictions
- Every estimate
- shows a low, typical and high range, its line-by-line breakdown, and the published source behind each figure.