[inflatableDodo]

I'm talking about having a domestic supercharger. You can get up to 70kW at the company head fuse as a standard residential customer in the UK. You can also go higher, but you have to apply for a quote, so at the moment getting a true domestic supercharger is a bit pricy.

However, they are going to have to upgrade it all anyway if we get loads of electric cars.

As for the coolant loop, I wasn't suggesting to have a valve that can open, just a closed loop to the socket and a heat exchanger that then heats the water flowing through the handle of the plug.

You then store the water in an insulated tank and use it as a preheated supply feeding your main water heating system.