UK Tesla calculator
Tesla Charging Cost Calculator (UK)
See what a year of driving your Tesla actually costs to charge in the UK — split between home and Supercharger — with every electricity rate editable to your own tariff. No hard-coded p/kWh that quietly goes stale.
Your figures
All figures are editable estimates, checked 2026-07-13. We never present a rate as fixed fact — see our sources.
Result
Estimate only — confirm live figures with Tesla and your suppliers.
How this is worked out
Annual energy = mileage ÷ real-world efficiency (mi/kWh). We split that by your home/Supercharger share and apply each rate. Defaults (home 24.5p, Supercharger 41p) are examples checked 2026-07-13 — a smart EV night tariff can be far lower (~7.5p). Sources: Ofgem price cap, Tesla Supercharging.
How the £601.08 figure above is calculated
Using this page's default inputs — a Model Y (RWD) (3.7 mi/kWh), 8,000 miles/year, 80% charged at home — here is every step.
- Find annual energy use.
kWh = annual miles ÷ mi/kWh= 8000 ÷ 3.7 = 2162 kWh. - Split it by where you charge. 80% at home = 2162 kWh × 80% ≈ 1730 kWh; the remaining 20% on Superchargers ≈ 432 kWh.
- Price the home share.
£ = kWh × home p/kWh ÷ 100= 1729.73 × 24.5 ÷ 100 = £423.78. - Price the Supercharger share.
£ = kWh × Supercharger p/kWh ÷ 100= 432.43 × 41 ÷ 100 = £177.30. - Add them together. £423.78 + £177.30 = £601.08 for the year, or 7.51p / mile once you divide by 8,000 miles.
These are the calculator's own SSR defaults — change home rate, Supercharger rate, mileage or the home/Supercharger split in the panel above and the same five steps recompute live. Sources: Ofgem price cap, Tesla Supercharging. Full list: Methodology & sources.
The home/Supercharger split matters more than any rate
People tune the pence-per-kWh boxes and leave the split slider alone, which is backwards. That slider is the single biggest lever on the answer, because the gap between a cheap overnight home rate and a peak Supercharger rate can be five-fold or more. Shifting the split from 80% home to 50% home moves the annual total far more than any plausible change to either rate.
Which makes the honest planning question not "what does charging cost?" but "what share of my miles can realistically go on the cheap rate?" — and that depends on things the calculator can't see: whether you have off-street parking, whether your commute fits your usable range, and how much of your mileage is long-distance.
Where an EV night tariff changes the picture entirely
The default home rate above is a general domestic figure, and it is the wrong number for anyone who can get a dedicated EV tariff. Those price a set of overnight hours far below the standard rate, and because most home charging happens while you sleep, a large share of your energy can land in that window.
Two consequences worth acting on. First, if you are comparing an EV against a petrol car on running costs, using a standard domestic rate materially understates the EV's advantage — put your real off-peak rate in the box. Second, the value of a public charging perk falls as your home rate falls: free Supercharging displaces energy you would otherwise have bought at the Supercharger price, so the cheaper your home charging, the smaller the share of your driving that perk actually touches.
Where the referral bonus sits in an annual budget
Worth being straight about, on a page that does the arithmetic. Around 650 free Supercharging miles is roughly a few weeks to a couple of months of typical driving, depending on tariff and mileage — a genuine but one-off saving against a recurring annual cost.
So the ranking for anyone trying to reduce what charging costs them, in order of size:
- Get as much of your charging onto a cheap home tariff as your living situation allows. This dominates everything else and compounds every year.
- If you Supercharge often, look at whether a membership tier pays for itself — off-peak member rates can be a fraction of peak public rates, and the break-even is a simple sum you can do in the box above.
- Take the referral bonus — free, one-off, and worth more to heavy Supercharger users than to home chargers, for exactly the reason described above.
Every rate on this page is editable because published averages go stale and because your tariff is not the national average. The defaults are examples with a check date, not recommendations — replace them with the figures on your own bill and your own Tesla app before drawing conclusions.
Questions
How much does it cost to charge a Tesla at home in the UK?
It depends entirely on your tariff. At a typical ~24.5p/kWh a Model Y using ~3.7 mi/kWh costs roughly 6–7p per mile; on a dedicated EV night rate near 7.5p/kWh that drops to around 2p per mile. Edit the rate above to your own supplier.
Is Supercharging more expensive than charging at home?
Usually, yes. Supercharger pricing in the UK is well above most home tariffs, so the more you charge at home the lower your annual cost. Membership reduces the Supercharger rate.