Tapo Energy-monitoring Smart Plug
Connect your portable AC home charger to your home electricity supply via one of these smart plugs to monitor how much energy is consumed by your vehicle when it is charging.
Provides instant, daily and monthly figures for your energy consumption.
These plugs (Tapo Model P110) are connected to your home WiFi and can be turned on and off remotely, or set to enable power on a time schedule.
Available from Bunnings and the usual local retailers.
Other brands of smart plugs are available with similar functionality. If purchasing another brand, check that the Smart Plug you purchase has an energy monitoring facility. (There is also a Tapo P100 model which doesn’t appear to have this functionality.)