There is one issue that no one has picked up on for those living in country areas with one person with a 300 mile Tesls type range car and say a 100 mile rage car and also a heat pump.
Oil boilers used in the country dwellings will be replaced with electric heat pumps that produce say 3KW of heat for each KW electrical input to the pump.
A nice 5 bedroom house with reasonable insulation needs 15KW of heat and even with a heat pump that is 5KW or 20 amps.
A 300 mile range car even with a 7KW home charger after say a 250 mile drive will take well over 12 hours to charge. at 30 amps.and could be needed first thing in the morning.
If the 100 mile range car battery is flat as well we are talking abut 5 hours or so to do that assuming the house have a second 7KW charger. Therefore another 30 amps.
If we allow a further 5 KW for an electric cooker say another 20 amps.
Therefore we need 100 amps at times and 80 for a reasonable period.
Most home supplies are 80 or 100 amp supplies.
Even with clever mains contol systems this could be an issue.
