Is it time to ask UKPN to consider if HVDC works better in future networks ?

Or alternatively ensure that AC to DC rectification for car chargers is 99% efficient . rather like high quality audio equipment . you pay for the equipment inside the box.

The main problem for now I think is defining how much DC you could use in future infrastructure and perhaps more importantly where in terms of physical location you might use it . Single individual users e.g.a metals smelting and process may use induction melting and Dc motors in subsequent forgeing and rolling , it could generate its own supply.  For now the AC distribution system isn't really under any efficiency threat due to sheer problem and cost of changes , but generation (from central generation ) to a common transmission system would yield more electricity for whatever uses we want . you could generate locally to local interconnector but this would have to be very reliable (perhaps with backup units) , but then you would be specifying generation to demand and that would (unless some sort of standardisation can be done) create all sorts of different generation units , which without common/standardised critical parts makes some aspects of servicing/renewal difficult

The electrically heated home whilst not a problem for modern well insulated homes , will of course increase electricity use , as well as put more thought into service requirements when supply is lost , as the long standing thinking is at least if gas or electric failed you had some sort of energy supply, with gas being phased out where supply of electricity is lost , the ability to get it back up and running  is important , as is temporary supplies for vulnerable people , which with electricity can be done easily with portable generation direct to distribution board.

Of course not all homes/buildings can be heated electrically and with the car charger modelling peak winter demand isn't something we can afford to model wrong in terms of local grid effects a 15kw charger plus 6kw shower plus 6-15kw on heating a poorly insulated constructed building/home plus general electricity demand , over a towns local grid will put current distribution structures under strain. UK homes having standard 100A feed specification. Its true that night charging at home supplies evens this out but even so its a big change in what the distribution grid has been specified to do 

Or alternatively ensure that AC to DC rectification for car chargers is 99% efficient . rather like high quality audio equipment . you pay for the equipment inside the box.

The main problem for now I think is defining how much DC you could use in future infrastructure and perhaps more importantly where in terms of physical location you might use it . Single individual users e.g.a metals smelting and process may use induction melting and Dc motors in subsequent forgeing and rolling , it could generate its own supply.  For now the AC distribution system isn't really under any efficiency threat due to sheer problem and cost of changes , but generation (from central generation ) to a common transmission system would yield more electricity for whatever uses we want . you could generate locally to local interconnector but this would have to be very reliable (perhaps with backup units) , but then you would be specifying generation to demand and that would (unless some sort of standardisation can be done) create all sorts of different generation units , which without common/standardised critical parts makes some aspects of servicing/renewal difficult

The electrically heated home whilst not a problem for modern well insulated homes , will of course increase electricity use , as well as put more thought into service requirements when supply is lost , as the long standing thinking is at least if gas or electric failed you had some sort of energy supply, with gas being phased out where supply of electricity is lost , the ability to get it back up and running  is important , as is temporary supplies for vulnerable people , which with electricity can be done easily with portable generation direct to distribution board.

Of course not all homes/buildings can be heated electrically and with the car charger modelling peak winter demand isn't something we can afford to model wrong in terms of local grid effects a 15kw charger plus 6kw shower plus 6-15kw on heating a poorly insulated constructed building/home plus general electricity demand , over a towns local grid will put current distribution structures under strain. UK homes having standard 100A feed specification. Its true that night charging at home supplies evens this out but even so its a big change in what the distribution grid has been specified to do