Disclaimer - I’ve been driving an EV for 2.5 years and I love it. I have a home charger, which is by far the easiest option, as I plug in and charge on a cheap overnight rate whenever I need to. With a range of over 300 miles in summer, 250 in winter, realistically the only time I need to use public charging is when I’m away from home. So I’m in the bracket for whom charging is not an issue.
What about the rest?
Around 65% of UK homes have off street parking, and the 35% that don’t will include a higher proportion of non-car owning households. So say 70% of car owning households have off street parking.
The average car does around 8,000 miles a year, and with middling EV efficiency that’s going to need 2,500kWh of electricity. On a 7kW charger that’s 360 hours of charging, just over 7 hours a week.
So if a workplace has 100 employees bringing a car to work, 70 of them can charge at home, the other 30 can meet their charging needs by plugging in one day a week at work. If the workplace can provide 6 chargers, it would, at a stretch, cover the charging needs of the whole workforce. Call it 10 to avoid contention and help out visitors.
You don’t offer free charging at work - you make it cost of the electricity or just a bit more, that will dissuade those employees who do have home chargers from using the workplace ones, and leave them for the people that need them.
Of course, not everyone can charge at work, but a similar ratio applies to other car parks where people leave cars for long periods of time. If 1 space in 10 has a charger, that will be more than enough. Probably 1 in 20 would do.
There also need to be more high-power charging facilities - and government needs to get its finger out on that and provide both policy and investment for grid upgrades, planning etc, to remove the bottle necks which currently exist. That’s where the main thrust of the ‘forward planning’ needs to be. At the moment, those are mainly on major roads to cater for drivers on long journeys. They could also be added to some or all petrol stations, and they then become an alternative solution for local residents without off street parking.
Technology is improving all the time - new battery technologies which are both more energy dense and faster to charge are coming. Prices are coming down - you don’t have to pay £30K for an EV. Quite apart from the fact that you don’t have to buy a new car - you can now get an entry level family size EV with a range of over 200 miles for around £20K.
By 2030, I think there’s a good chance you will be able to buy a family EV with a similar range to today’s petrol models, with a faster charging speed (add 300 miles in 20 minutes), for much the same price as a similar spec petrol car today.