That is so typical of politics On the one hand they push you into buying an EV, but when you do and try to charge it with a cable running from your house to the car over "public" land then you get fined for it.
Yup, if and when it happens to me I shall be using exactly that argument to make a very public, very embarassing, fuss over it.
The particular irony for me is that 1 1/2 years ago my local council introduced payments for permits to park in residents only zones based on vehicle emissions. Prior to that it was free to get a residents permit, now it's only free if you have a very low emissions vehicle (basically PHEV or BEV). Also this year there was road charging (£12.50 per day) introduced in effectively the whole of London for using vehicles with that don't meet Euro 4 petrol or Euro 8 diesel emissions standards, effectively banning older cars with technically lower emissions that are too old to have been homologated to those standards. Which so happens to include my old car.
So faced with those two my hand was pretty much forced into getting a new car, which needed to be a PHEV/BEV to satisfy the parking requirement, when I could have happily run my existing car for several years more and spread its embodied energy/carbon emissions over a while longer.
Through this thread I saw mentioned a lot that overnight charging is the thing, but with solar electricity there is not a lot of it around during the night! So this means wind has to fill in here, but that does not always blow, meaning there still is a large need for conventional electricity. No will many say, electricity storage will do here. With current state of battery technology I doubt that will be feasible. What will, I don't know. Just pointing out problems I see here.
it's probably better to think of 'idle charging' rather than 'overnight'.
There are plenty of opportunities to charge vehicles when idle as long as there are places to plug them in when idle and it's quite possible to modify charging to take place when there is abundant wind/solar power available and defer it when there is enough general demand that non-renewables would be brought on-stream to satisfy demand.
Infrastructure to do this could be cheap and implemented tomorrow if there was a will. Even without infrastructure it's possible for a vehicle or charge point to monitor mains frequency to assess the current whole grid demand today, it would require very minor changes to current AC chargers to implement - basically a mains zero-crossing detector, a stable microprocessor clock, and a bit of extra code in existing chargers.
The first requirement however is to have enough EVs plugged in when idle whenever possible so that they can charge opportunistically when there is low electricity demand.
Currently I try to manage this manually, only charging my car at times I know are typically low demand and have high availability of solar or wind as sources (sometimes even actively checking demand/availabilty on gridwatch.co.uk). I'm sure that it makes bugger all difference, but at least I know that I'm doing my best to not make things
worse.
Also something to think about. Do we have any idea of the long term influence of what we are doing? Erecting big wind farms everywhere on the planet. What does this do to the climate. Are we changing micro climates that can have an impact on the big picture? Think of it, a wind mill takes energy from wind blowing, reducing its strength a bit. On a large enough scale, does this change how clouds are being dispersed and with that change rain distribution?
Same question with wind farms in the north sea. All the pillars that stand on the seabed how do they affect current flow and with that temperature distribution through the water?
Solar installations on grasslands, how does that affect the thermal behavior? We know that asphalt has a big impact where it comes to heat. It absorbs a lot during the day and releases it at night.
See the bigger picture here? Do we know about the long term effect of what we are doing to try and change the effects of what we already did?
Yup, we don't know, for a fact, the long term implications of going down those routes. What we do know is how damaging our current/previous energy infrastructure is/was. All we can do is pursue a policy of harm minimisation based on our best current understanding of the science and update our policies as we learn more. As we've already intimated, sound science/engineering and politics are poor bedfellows and as we have to go through the political process to achieve the engineering outcome we stuck with that and all its faults. A cynic might say doomed, if past observation of politics is any predictor of future behaviour.