This is interesting because in European 230V sockets a 2kW power is safe and well under rated maximum of ~3kW. So if you park your car at around 7pm and leave at 7am you get 24kWh charge from a simple standard socket. It could deliver another 12kWh, if you have a charger that can be configured to go higher and you know you won't overheat any cables or connections along the way.

Some houses have the red plug, a three phase plug which can do 11kW continuous, around 7kW sustained and very safe.