Tesla Supercharger Cost Calculator
Where you plug in matters more than what you drive. Set your mix of overnight EV-tariff charging, standard-rate home charging, Supercharging and free charging to see your monthly bill, cost per mile — and whether Tesla's Supercharging membership would pay for itself.
Where you plug in matters more than what you drive. Set your mix of off-peak home charging, peak-hour charging, Supercharging and free charging to see your monthly bill, cost per mile — and whether a Supercharging membership would pay for itself.
Where the money goes
Four charging strategies
per month, your ratesBreakdown by source
Not on an EV tariff yet? Most UK suppliers now offer EV tariffs with around six cheap overnight hours at roughly 7–9p/kWh — a fraction of the ~26p capped rate. Schedule charging in the car (or let your supplier's smart charging handle it) so it falls inside the cheap window, and push your off-peak share towards 100%. A home battery can also store cheap overnight or solar energy for the evening peak — see the Powerwall Payback tool.
On a time-of-use (TOU) or EV rate plan? Many utilities offer overnight rates far below the daytime price — sometimes under $0.10/kWh. Schedule charging in the car to start after the off-peak window opens and push your off-peak share toward 100%. A home battery can also shift solar or cheap overnight energy into peak hours — see the Powerwall Payback tool.
How this is calculated
- Energy = miles per month × consumption (Wh/mi) ÷ 1,000. That energy is split by your mix; if the sliders don't add to 100% we scale them proportionally.
- Home charging is billed at the meter, so home kWh are increased by the loss percentage (≈8–12% on Level 2from a 7 kW wallbox) before multiplying by your off-peak or on-peakpeak/standard rate.
- Supercharging is billed per kWh delivered. Your effective rate = list price × (1 − off-peak share × off-peak discount), then × (1 − membership discount) if you have one, plus the monthly fee. Some sites bill per minute instead — prices vary by site and time of day.
- Best case assumes every mile is charged at home off-peak on an EV tariff; worst case assumes every mile is Supercharged at your effective non-member rate.