BYD Atto 3 charging cost in the United Kingdom (2026)
Charging a BYD Atto 3 from 10% to 80% costs £4.80 overnight on Intelligent Octopus Go and £43.73 on InstaVolt rapid chargers.
Worked out from BYD's published charge times and the Ofgem price cap in force from 2026-07-01. Prices exclude the daily standing charge, which you pay whether or not you charge.
Work out your own cost
Off-peak energyBilled at standard rate
The same charge, four different places
All figures below are for the same 10% to 80% top-up, which puts about 48 kWh through the meter. Where you plug in changes the bill by a factor of 9.
| Where you charge | Cost | Per kWh |
|---|---|---|
| Intelligent Octopus Go, overnight | £4.80 | £0.10 |
| Home, Ofgem capped standard rate | £12.41 | £0.26 |
| Public AC (ubitricity) | £26.14 | £0.55 |
| Rapid DC (InstaVolt) estimated | £43.73 | £0.92 |
The rapid charging row uses the same wall energy as the AC cases, so treat it as indicative. DC losses differ and BYD has not published a figure for them. Public prices are provider-specific, not national averages.
Why the overnight rate does not cover a full charge
This is the part most charging calculators get wrong, and it is worth understanding before you switch tariff. Intelligent Octopus Go gives you 6 hours of cheap electricity between 23:30 and 05:30. At 7 kW that window can deliver about 42 kWh.
A full charge needs 67.9 kWh and 9 h 42 min. Even a 10% to 80% top-up needs 47.53 kWh, which is more than the window holds. Assume the whole session runs at £0.08/kWh and you will underestimate the bill by roughly a quarter.
Rapid charging
BYD publishes one verified interval: 30% to 80% in 29 minutes verified. That works out at an average of about 62.6 kW, well under the 88 kW headline figure. Peak power is held briefly at low state of charge and tapers from there, so any tool that divides battery size by 88 kW will tell you the car charges faster than it does.
Questions owners actually ask
How much does it cost to fully charge a BYD Atto 3?
A 0–100% charge draws 67.9 kWh from the wall on a 7 kW home charger and takes 9 h 42 min. At the Ofgem capped rate of £0.26/kWh that is about £17.73.
Can I charge a BYD Atto 3 entirely on the cheap overnight rate?
No. Intelligent Octopus Go gives 6 hours of cheap electricity, which at 7 kW is about 42 kWh. A full charge needs 67.9 kWh, so roughly a third of it falls outside the window and is billed at the standard rate.
Why does a 7 kW charger take 9 h 42 min rather than 8 hours 40 minutes?
Dividing 60.48 kWh by 7 kW gives 8 h 39 min, but that ignores conversion and thermal losses. BYD's own figure is 9 h 42 min, which implies about 11% of the electricity you pay for never reaches the battery.
Will a BYD Atto 3 charge at 11 kW at home in the United Kingdom?
Only with a three-phase supply, which most UK homes do not have. On a standard single-phase supply the car charges at up to 7 kW even though the onboard charger is rated at 11 kW.
How fast does a BYD Atto 3 charge on a rapid charger?
BYD publishes 30–80% in 29 minutes, an average of about 62.6 kW. The 88 kW headline is peak power held only briefly at low state of charge.
Where these numbers come from
Charge times are BYD's published figures for this model. Energy is derived from those times rather than from battery capacity divided by charger power, which means the calculation does not depend on whether the published 60.48 kWh is gross or net — a distinction BYD does not state.
Electricity prices are dated and sourced. Nothing here is modelled from an assumed efficiency unless it is labelled estimated.