Cost to Charge a Tesla Model 3 in Montana
$13.83 for a full charge at 15.14¢/kWh — $4.00 per 100 miles, about $480 a year.
Tesla Model 3 in Montana
- Per 100 miles
- $4.00
- Per mile
- $0.04
- Per year
- $480
- vs petrol / yr
- $1,154
- Electricity per year
- Petrol per year
The full picture
| Item | Energy | Cost |
|---|---|---|
| This charge | 91.3 kWh | $13.83 |
| Full charge (0–100%) | 91.3 kWh | $13.83 |
| Per 100 miles | 26.4 kWh | $4.00 |
| Per year (12,000 mi) | 3168.0 kWh | $480 |
| Same year on petrol (30 mpg) | — | $1,634 |
| Difference | — | $1,154 |
What charging actually costs here
Filling a Tesla Model 3 from empty in Montana costs $13.83. The car draws 91.3 kWh from the wall for a full 346-mile charge, and Montana residential electricity averages 15.14¢ per kWh. That works out at $4.00 per 100 miles, or $0.04 a mile.
Montana is cheaper than average: 15.14¢ against a national mean of 19.42¢, which ranks it 16 of 51 for electricity price. The same car costs $11.98 to fill in Nevada and $48.16 in Hawaii — a 4.0× spread across the country for identical driving.
Against a petrol car doing 30 mpg at $4.09 a gallon, electricity here is 3.4× cheaper per mile: $4.00 versus $13.62 per 100 miles. Over 12,000 miles a year that is $1,154 saved.
Similar EVs in Montana
| Vehicle | Per 100 mi | Full charge | Per year |
|---|---|---|---|
| Tesla Model S | 27.1 kWh | $16.82 | $492 |
| Tesla Model Y | 27.5 kWh | $13.61 | $500 |
| Hyundai Ioniq 6 | 28 kWh | $13.40 | $509 |
| Subaru Solterra | 28 kWh | $12.21 | $509 |
| Toyota bZ | 28 kWh | $12.21 | $509 |
| BMW iX | 28.6 kWh | $18.79 | $520 |
The same car in nearby-priced states
| State | ¢/kWh | Full charge | Per year |
|---|---|---|---|
| Washington | 14.91 | $13.62 | $472 |
| New Mexico | 15.06 | $13.76 | $477 |
| Florida | 15.10 | $13.79 | $478 |
| Arizona | 15.18 | $13.87 | $481 |
| Wyoming | 15.24 | $13.92 | $483 |
| South Dakota | 15.36 | $14.03 | $487 |
Frequently asked questions
How much does it cost to charge a Tesla Model 3 in Montana?
How much does a Tesla Model 3 cost per mile in Montana?
Is charging a Tesla Model 3 cheaper than petrol in Montana?
How long does a full charge last?
Does this include charging losses?
Vehicle data: EPA fueleconomy.gov, model years 2025-2027. Electricity: EIA Electric Power Monthly Table 5.6.A, residential, June 2026. Petrol: EIA weekly retail gasoline price, 24 August 2026.
Estimates for informational purposes only. Real charging cost depends on your tariff, time of use, charger efficiency, temperature, driving style and state of charge. EPA figures are a standardised test result, not a promise about your car.