How much does it cost to charge a Kia EV9 at home?
A full home charge of the Kia EV9 99.8 kWh RWD (2023-present) costs about £28.19 at the July 2026 Ofgem price cap (26.11p/kWh) — that is 8.1p per mile. The typical 20–80% top-up costs £16.91.
Prices based on the Ofgem price cap of 26.11 p/kWh, effective 1 July 2026.Source: Ofgem
Full charge
£28.19
at the Ofgem price cap
Running cost
8.1p /mile
at 3.67 mi/kWh incl. losses
20–80% on a 7 kW wallbox
8 hr 9 min
costing £16.91
Charging cost by tariff
| Tariff | Full charge | 20–80% | Per mile |
|---|---|---|---|
| Ofgem price cap26.11 p/kWh | £28.19 | £16.91 | 8.1p |
| Octopus Go off-peak (London example)8.63 p/kWh | £9.31 | £5.59 | 2.7p |
Costs include the ~12% energy lost during AC charging, so they reflect what your meter records. Off-peak rates assume all charging happens inside the cheap window — how much of your charging has to land in it decides whether an EV tariff pays. Rates vary by region. These are comparisons of published rates, not tariff recommendations.
How the EV9 compares on running cost
Pence per mile at the Ofgem price cap. Shorter is cheaper.
Charging time by charger type
Most owners choose between a 7 kW wallbox and the socket they already have. A three-pin plug costs nothing to install but charges at about 2.3 kW, which is the difference between an overnight top-up and a two-day one on this car’s 95kWh pack. Charging away from home is a different calculation again — public rapid rates run several times higher.
| Charger | Speed for this car | 20–80% | Empty to full |
|---|---|---|---|
| Three-pin plug (2.3 kW) | 2.3 kW | 24 hr 47 min | 41 hr 18 min |
| 3.6 kW wallbox | 3.6 kW | 15 hr 50 min | 26 hr 23 min |
| 7 kW wallbox | 7 kW | 8 hr 9 min | 13 hr 34 min |
| 22 kW three-phase | 11 kWlimited by the car | 5 hr 11 min | 8 hr 38 min |
Times are simple energy-needed ÷ power estimates. Real sessions can run a little longer, because charging slows as the battery approaches full.
What affects these numbers for the Kia EV9
This car charges at up to 11 kW on AC
The Kia EV9's onboard charger accepts at most 11 kW from an AC connection. A 22 kW three-phase cannot charge it any faster than that, so there is no benefit in paying for a more powerful home charger than the car can use.
A three-pin plug is a backup, not a plan
From a standard three-pin socket (2.3 kW), an empty-to-full charge of the 95 kWh battery takes about 41 hr 18 min. Fine for overnight top-ups, but impractical as your only way to charge.
Efficiency is below the EV average
At 3.67 miles per kWh, the Kia EV9 uses more electricity per mile than most EVs, so each mile costs a little more even on the same tariff.
Real-world figures vary
The 349-mile range is the official WLTP lab figure. Cold weather and motorway speeds reduce real-world efficiency, which raises cost per mile and lowers range. Treat these numbers as good estimates, not promises.
The 210 kW DC figure is not for home charging
DC rapid charging at up to 210 kW only happens at public rapid chargers. All home charging is AC, so it is the 11 kW AC limit that matters for the times on this page.
Kia EV9 99.8 kWh RWD— specifications used
- Usable battery
- 95 kWh
- WLTP range
- 349 miles
- Efficiency
- 3.67 mi/kWh
- Max AC charging
- 11 kW
- Max DC charging
- 210 kW
- Connector
- Type 2 / CCS
Data source: Verified automatically from 4 agreeing sources 2026-08-09: Kia UK; Zapmap; Electrifying.com; EV Charging Cable Store guide. Kia publishes no usable kWh - 95 is Electrifying's stated usable figure (industry estimates ~96); efficiency derived from range / usable; year from Wikipedia (European release June 2023). Evidence: data/spec-evidence/kia-ev9-rwd.json