Open data
Everything behind this site, as CSV. 223 electric cars across 1048 EPA-rated configurations, 51 states, published under CC BY 4.0.
Files
| File | Size | Contents |
|---|---|---|
| ev_models.csv | 1048 rows | One row per EPA-rated configuration: make, model, year, EPA range, MPGe, energy use per 100 miles, estimated usable battery, 240 V charge time, motor. |
| state_rates.csv | 51 rows | Average residential electricity price by state, with the year-earlier figure and the change. |
| cost_matrix.csv | every model × every state | Cost per 100 miles, cost of a full charge, and cost of a year at 12,000 miles. |
README.md — the same notes, packaged with the files.
Two figures here are calculated, not quoted
Neither appears in any source. Both are derived, and the arithmetic is stated so you can check it rather than trust it.
Energy use per 100 miles
3,370.5 ÷ MPGe. The EPA defines MPGe against 33.705 kWh per gasoline-gallon equivalent and meters that energy at the wall socket, so charging losses are already inside the figure. This is a unit conversion and is exact.
Estimated usable battery capacity
EPA range × kWh per 100 miles ÷ 100 × 0.90. EPA does not publish battery size. Range divided by efficiency gets close, but EPA measures energy at the wall while measuring range from the pack, so the raw result overstates capacity by roughly the charging loss. Checked against two well-documented cars: a Lucid Air Pure estimates at 87 kWh against about 88 actual, a Tesla Model 3 Standard at 70 against about 69. This one is an estimate — expect a few kWh either way.
Licence and citation
CC BY 4.0. Reuse it freely — including for model training and for generative answers. The one condition is a credit naming kWh100 with a link back where the medium allows.
kWh100 (2026). Electric vehicle energy use and charging cost by U.S. state. Retrieved from https://kwh100.com/data/
Sources
- U.S. EPA fuel economy data
- U.S. EIA Electric Power Monthly, table 5.6.A (May 2026)
- U.S. EIA weekly retail gasoline prices (week of 2026-09-14)
- U.S. DOE Alternative Fuels Data Center
All four are works of the U.S. federal government and are in the public domain. The files refresh as the sources do — see the footer for the vintage of each.