15.57¢/kWh
Home charging in Montana. Each row uses that model's longest-range current trim, 1,000 miles a month, and a 10% charging loss.
| Model | 100 mi | Full | Month |
|---|---|---|---|
| Tesla Model Y | $3.89 | $13.87 | $38.86 |
| Tesla Model 3 | $4.44 | $14.04 | $44.44 |
| Chevrolet Equinox EV | $4.56 | $14.56 | $45.64 |
| Ford Mustang Mach-E | $4.71 | $15.07 | $47.10 |
| Hyundai IONIQ 5 | $4.52 | $14.39 | $45.24 |
| Honda Prologue | $4.73 | $14.56 | $47.27 |
| Rivian R1S | $5.85 | $23.98 | $58.48 |
| Chevrolet Blazer EV | $4.67 | $14.56 | $46.66 |
| Volkswagen ID.4 | $4.83 | $14.04 | $48.26 |
| Cadillac LYRIQ | $5.36 | $17.47 | $53.59 |
| Tesla Cybertruck | $6.48 | $21.07 | $64.82 |
| BMW i4 | $4.17 | $13.87 | $41.66 |
| Audi Q4 Sportback e-tron | $5.60 | $14.04 | $55.95 |
| Audi Q4 e-tron | $4.88 | $14.04 | $48.76 |
| Rivian R1T | $5.71 | $23.98 | $57.09 |
Residential rate: EIA Electric Power Monthly, August 2026. EIA residential average, Montana, 2026-08 (latest in this book). This page uses 15.57¢/kWh.
Across 15 indexed models, a full charge runs from $13.87 for the Tesla Model Y to $21.07 for the Tesla Cybertruck. Per 100 miles that is $3.89 to $6.48. At 1,000 miles a month it is $38.86 to $64.82.
No. These figures are home charging at the residential rate, with a 10% loss from the wall. Public fast-charging prices are a separate scenario.