$18.57full charge
The EX90 PLUS_TWIN (107 kWh) costs about $18.57 to charge fully at West Virginia's average home rate of 15.78¢/kWh, including ~10% charging loss (117.7 kWh from the wall). That is $6.23 per 100 miles.
EIA residential average, West Virginia, 2026-07 (latest in this book). No West Virginia gasoline series, so this uses PADD 1C regular, week of Oct 5, 2026.
At 1,000 miles a month and 30 mpg, home charging costs $62.33 and the gas car costs $131.97. The EV saves $69.64 a month at $3.959/gal. Both miles and mpg are editable on the calculator.
The listed DC fast-charge time to 80% is 30 minutes at up to 250 kW. A full home charge is a different session. This page prices the energy from the wall, not how long a Level 2 charger takes.
This page uses the residential rate. Public fast-charging prices are a separate scenario and are not included.