Certainly will need more than the usual dedicated LV line ;-)

More technical meat in this paper

https://www.charin.global/media/pages/technology/knowledge-base/c708ba3361-1670238823/whitepaper_megawatt_charging_system_1.0.pdf

note references to 1500V DC  and charging currents up to 3kA (not at the same time) in the text.

The section on potential fault currents makes eye watering reading.

The short circuit current should be limited by the vehicle to a peak current of 70kA and 12MA²s
between the DC+ and DC- terminals. The EV supply equipment shall limit the peak current to 30kA and
1MA²s at the vehicle connector. In case of two independent faults (one in the vehicle and one in the EV
supply equipment) a short circuit current may flow through the protective conductor. Based on the added
impedance of the charging cable, the peak current will be limited to 55kA, and 11MA²s.

And we worry about fault currents from 1MVA substations!!

a few dozen chargers like that  would make anything like the Eddie Stobart depot into  a major node on the national grid.

Mike

||||Looks like we need a power station at every motorway charging point for trucks. Could be a mini nuclear site.

And when there are no trucks to charge, maybe they could be making some hydrogen or other storage mechanism? I assume they can switch between loads pretty quickly, just not on and off quick.

Yes, Roger, the power plant would obviously be synchronised with the grid so could generate or receive from it.  If we could miniaturise the nuclear to the size of a submarine we may even be able to run it on automatic with just a maintenance engineer or two onsite, in case of a problem. 

....SMRs were nothing but "an opportunity to lose money in smaller batches"....

Article here https://www.theregister.com/2024/06/03/small_modular_reactor_criticism/

Lets hope we can do better......

....SMRs were nothing but "an opportunity to lose money in smaller batches"....

Article here https://www.theregister.com/2024/06/03/small_modular_reactor_criticism/

Lets hope we can do better......

Hi Roger,

Thanks for the info on small modular nuclear.  It is a warning that we should be extremely careful about investing in unproven technology which includes nuclear fusion in my view..

So we need to rehabilitate our existing nuclear stations as we cannot keep on using oil and gas although at present this is much the cheapest source of energy.  .

Renewables; Wind and Solar are excellent when available but we need to meet the peak demand in winter on a windless day. 

Batteries for storage could help but are not practical really and may have a very limited life span.   Converting all hydro to pumped storage would be more effective but even this is a limited fix.

So we must develop carbon capture so we can burn anything;  rubbish, plastics, wood and coal but not oil which our grandchildren will need for transport .