I started this earlier but "events" took over.
cromwell wrote:Also will we need a lot more power stations?
No Crommers they'll need a
LOT more power stations..
They are still decommissioning coal and coal is still 9.5% of the grid at peak consumption. So they need to replace that 9.5% AND add in at least 50% to 100% more power on the grid. Solar does not work at night and gives minimal input in winter. In Winter you need heaters going all the time which will drain the car batteries in triple time, meaning more frequent top ups.
I can see this being fudged by a big shift into LPG, although as we now import gas and LPG, we're not helping in the balance of trade situation there. If we add in that there are no cars, let alone trucks or busses, which can drive more than 300 miles on one charge and it will take a minimum of 45 minutes to sufficiently charge a depleted car, to complete a 500 mile journey, people will need to factor in long breaks in their journeys and we'll need hundreds of thousands, if not millions of, new charging points. A network which simply does not exist today. How this will also play with the 8h long distance truck/bus driving threshold, I have no idea.
2040 may seem like a long time away but Hinckley Point C is estimated to take 18 years to build and it has not even started yet. Also to hit 2040 with fuel free cars, will require a ramp up of car production from at least 2032 or 2035 at the very latest. Tesla has taken 5 years to get things to volume consumer level and they are still premium cars, not budget.
It is good to have aspirations and I do laud this, but the reality is something else. However when these aspirations are set out, I would prefer to see a clearly documented trail of how we shift the hydrocarbon energy budget, for transport, onto EV or other power sources than petrol or diesel.
For instance, If we look at the UK government's
energy breakdown for 2016, we see on page 7 (page 8 of the pdf), that transport is some 55m tonnes of oil equivalent energy. OK some of this is already electric based (trains), but the bulk is hydrocarbon fuel based.
Skip forward to page 9 (10 on the pdf) and we see that electricity is just over 20m tonnes oil equivalent and petroleum products are around 65m.
Let us take a simple figure and say transport is 45m tonnes oil equivalent of energy and electricity is 25m. We know that the grid is often at, or near, peak consumption, especially on winter days.
By my calculations from that sheet, we'd need to, at least, triple UK generating capacity, assuming that we need a buffer. In the pipeline? Removal of our coal power stations which are the fastest responding and highest power density stations and replacing some of that power with non persistent renewables.
Quite simply, they would have to build about 10 Hinckley Point C stations around the country to even approach the problem.
Charging Jo, yep a big issue. Most people would have to charge at public charging stations, during the day and at peak electric usage, rather than at night. Negating the benefits of overnight low usage periods. Batteries can be removed, by a garage, but are also pretty damned heavy too.
They may well drive Diesel and Petrol off the roads. But they'll replace it, mainly, with LPG and that can be retrofitted. Electric simply is not mature enough and still won't be in 2040.