Last updated: 2026-10-30
A single-phase home supply allows up to 7.4 kW, about 40 km of range per hour; a three-phase supply allows 11 kW (about 60 km per hour) or 22 kW (about 120 km per hour). Many cars accept at most 11 kW on AC, so 22 kW only helps if your car can take it. For most houses with three-phase, 11 kW is the sensible choice; with single phase, 7.4 kW still refills an average day's driving overnight several times over.
Power and range per hour, by supply
| Supply | Current | Charging power | Range per hour |
|---|---|---|---|
| Household socket | – | 2.3 kW | 10–15 km |
| Single phase | 16 A | 3.7 kW | about 20 km |
| Single phase | 32 A | 7.4 kW | about 40 km |
| Three phase | 16 A | 11 kW | about 60 km |
| Three phase | 32 A | 22 kW | about 120 km* |
Approximate, for an average car using 17 kWh per 100 km. *Only if your car accepts 22 kW on AC; many accept 11 kW at most. The current actually available depends on your grid connection, the power approved in your contract and what else runs in the house at the same time.
How long a full charge takes
For about 50 kWh, roughly 300 km of range:
| Charging power | Time for about 50 kWh |
|---|---|
| 2.3 kW (household socket) | over 20 hours |
| 7.4 kW | about 7 hours |
| 11 kW | about 4.5 hours |
| 22 kW | about 2.5 hours, if the car accepts 22 kW |
Few people charge from empty every night. Most top up what they drove that day, which takes an hour or two even at 7.4 kW.
Your car has a limit too
Every electric car has an on-board charger that limits how much AC power it accepts. Many cars take at most 7.4 kW or 11 kW. The car always charges at the lower of the two values, the charger's or the car's: a car limited to 11 kW charges at 11 kW on a 22 kW charger. Check the AC charging power in your car's specifications before paying for a supply upgrade.
The charger adapts to your house
The chargers we install, the Easee Max for homes, go up to 22 kW and are configured never to exceed the current available on site. With a consumption sensor in the consumer unit, the charger adjusts its power in real time to the rest of the household load, so the main fuse does not trip when the oven, the heat pump and the car run together. That is why most homes do not need a bigger connection.
Which power to choose
- Single-phase supply: up to 7.4 kW. Enough for daily driving if you charge overnight.
- Three-phase supply, car accepts up to 11 kW: 11 kW. The most common case and the sensible choice for most houses.
- Three-phase supply, car accepts 22 kW: 22 kW, if your connection can spare the power. Useful if you drive long distances every day or have little time at home.
- Not sure yet: the charger stays the same if you change car or move from single to three phase later; only the supply and the configuration change.
How to find out what supply you have
Send us a photo of your electricity meter and your consumer unit. From those we can tell whether you have single or three phase and what power you can charge at, and we include it in a firm price within one working day. See what the job involves in our guide to installation cost or on the home charging page.