How much extra electricity will I use in my home when I buy an EV?

Household electricity consumption varies quite widely, depending on the appliances and the number of people in the home, but a typical figure for an average house before they have an EV is about 4000kWh/annum. The AEMC regularly publishes a lot of details around this, and the associated cost to consumers. Drivers use widely variable amounts of energy too, depending on the type of car, the amount of driving, and the type of driving. The ‘second car in the family that does the school run and the shopping trips’ uses a lot less fuel than, for example, ‘the car which is used for the long work commute during the week and takes kids to sporting fixtures all over creation on the weekends’!  We can use the average driving distance of about 14,000km per year, and a typical EV efficiency of 17kWh/100km (this equates to ~7L/100km in a petrol car) to get a ballpark though, of about 2,400kWh per year per car. Not all of this will be delivered at home.  Instead, a typical EV driver will collect about 10% of the energy for their car at fast chargers while on longer trips, so the average ‘at home’ electricity consumption will go up by about 50% when someone buys an EV – with a very wide range around ‘average’! The typical home won’t need an electrical connection upgrade to support this, though, because the extra energy used in the home to charge the car can easily be delivered at times when other equipment (aircon, oven, etc) isn’t running at full power. Charging the EV off peak is also far cheaper if the driver picks a suitable retail tariff…. petrol to cover 14,000km of driving in an ICE car is ~$2k/annum, peak time electricity for 14,000km of driving in an EV is ~$800, off-peak electricity on several different retail plans offered across most of the country for 14,000km in an EV is about $200.