Electricity calculators and tools
12calculators and interactive tools on this site
Each takes your own numbers and runs in your browser. Defaults come from the data on the page and are labelled where they are our scenarios.
All calculators
- Home electricity bill, solar, EV, CO2 and heat pump calculators for one stateOpen any state hub, for example the Texas hub, and go to the calculators block.
- Solar payback by stateSize, price per watt, credit, share valued at retail.
- EV charging cost by stateMiles, kWh per 100 miles, power and gasoline prices.
- Appliance running costHours per day or annual kWh, any state.
- Any device from its wattsWatts, hours, days.
- What your bill buysYour all-in cost per kWh against the state average.
- Electricity burdenYour bill over your income.
- Heat pump against gasCOP slider across states.
- Bill in two statesCompare any two states; ready-made pairs.
- Price, income and outage explorerChoose two measures and see all states.
- Compare states (tool)Side by side.
- Heating costHeating pages.
Data behind the tools
Questions
Do the calculators send my data anywhere?
No. They run in your browser.
Where do the default numbers come from?
EIA, PVWatts, EPA and ENERGY STAR data; scenarios are labelled.
Can I share a result?
State hub calculators have a copy-link button that stores the inputs in the URL.
Which calculator is best for a new EV?
EV charging cost by state.
Which is best for solar?
Solar payback by state, or the state hub solar block.
What about water heaters and heat pumps?
Appliance pages cover heat pump water heaters and heat pump running cost.
Is there a calculator for a bill I already have?
Yes: what your bill buys.
Do you have an API?
State data is published as JSON and CSV; see data sources.