I was interested with brother-in-laws old house, he had solar panels, wood burner, and LPG boiler, latter hardly used, it had two large water containers to store the heat, seemed perfect, however when you looked into it, installation costs were very high, and the floor needed to be reinforced to take the weight of the tanks, and it took up a lot of room.
At the moment my house has a 60 amp supply, but if I wanted electric heating and an electric car, then likely I would need at least 200 amp supply, all consumer units are rated 125 amp or less, so we are looking at some where in the region of using four times the electric power to that used today, I would expect my average is around 10 to 20 amp, so the average is going to be nearly 10 times what is used today.
OK some already using all electric, and not everyone will be using an electric car to maximum mileage, but the only real way is to cheat, I see an avert self charging car, no need to plug in, and yes solar panels on roof of car and induction loops could charge batteries without plugging in, but in real terms we all know there will be a petrol generator built into to car, yes there may be a buffer so instead of braking going down hill it charges the battery but we have had that for years.
1984 to 1986 this was made, with limited success, and there have been attempts to improve electric transport ever since, across the road to where I lived we had a milk man, and he bought a renault kangoo long wheel base van to deliver milk on a round of 64 miles, it had a claim of 100 miles range, but he run out of power quite a few times, so clearly no where near 100 mile range.
I worked on Sizewell 'B' started around 1989 on my return from Falklands, and I was no where near the first man on site, and it is claimed it went on line Feb 1995 but that was the diesel back up generators being tested, so looking at around 10 years to build a nuclear power station, and another 5 years planning before that, so looking at 15 years from when go ahead is given to producing power.
So I would say they are pipe dreams, maybe by 2040 they have a chance, but by then I will be likely dead, so I can't see it really happening.