Understanding the true cost to charge a Tesla is essential for any current or prospective owner. While the sticker price of the vehicle often dominates headlines, the ongoing expense of electricity is a far more frequent financial consideration. Unlike filling a gas tank, the price of charging an EV fluctuates based on location, time of use, and the specific model of the car. This guide breaks down every variable that impacts the final cost, providing clarity for budgeting and long-term ownership.
Calculating Cost Per Mile and Cost Per Charge
The most direct way to answer the cost question is to look at the cost per mile. On average, it costs roughly $0.04 to $0.05 per mile to drive a Tesla. This translates to about $4 to $5 for every 100 miles driven. To put this in perspective, a comparable gasoline vehicle getting 30 MPG with gas at $3.50 per gallon would cost about $11.67 per 100 miles. The efficiency of the Tesla’s electric powertrain is the primary reason for this significant difference, making the cost to charge per mile a fraction of traditional fueling methods.
When looking at the cost per charge, the numbers depend heavily on battery capacity. Charging a Standard Range Model 3, which holds about 50 kWh of usable energy, will cost approximately $10 to $11 at the US average electricity rate of $0.15 per kWh. A Long Range Model 3 with a 73 kWh battery would cost roughly $14 to $15 for a full charge. These calculations assume you are charging from empty to full, which is not always necessary for daily driving, allowing costs to be spread out over multiple sessions.
Home Charging vs. Supercharging
The biggest factor in the cost to charge a Tesla is the source of the electricity. Home charging typically utilizes a standard 240V outlet or a dedicated circuit with a Tesla Wall Connector. This method is the most economical, as homeowners pay their standard residential electricity rate. While convenient, Level 1 charging on a standard 120V outlet is significantly slower and can be less efficient, increasing the effective cost per kWh over time due to longer charging durations.
Tesla’s proprietary Supercharging network offers speed and convenience but comes at a premium. Supercharging costs are structured per kWh or per minute, depending on the model and location. While prices are higher than home charging, they are often still lower than the cost of a comparable tank of gas. Furthermore, newer Model S and Model X vehicles come with a certain number of free Super Miles annually, which can offset this cost entirely for drivers who utilize the network sparingly.
Variables Impacting Your Bill
It is crucial to recognize that the cost to charge a Tesla is not a fixed number. Electricity rates vary dramatically by state and even by utility provider. Residents of Washington or Oregon benefit from some of the lowest rates in the country, while those in Hawaii or California face significantly higher costs. Time-of-use (TOU) plans offered by utilities can also be leveraged to charge during off-peak hours, reducing the effective rate paid per kWh and directly lowering the total cost to charge.
Driving behavior and climate control also play substantial roles in the final cost. Aggressive driving, which depletes the regenerative braking system's efficiency, can reduce range. Similarly, using the HVAC system to heat or cool the cabin in extreme weather consumes a noticeable amount of battery energy. Optimizing these settings helps maximize range, ensuring that the cost per mile remains as low as possible over the life of the vehicle.
