Yeah, I would expect us to have apps where we can choose what % of charge we're prepared to go to on different days, times etc, plus more variable tariffs for buying/selling elec to the grid (possibly push notifications of price spikes to let you adjust on the fly?), options to set a "needs to be fully charged by this time in the morning" etc... not as fun as moving to Southern France though.
Say there are 30m EVs, that's 144MWh (jumped to mega there). Or, 14MW for 10 hours. I.e. 2 big wind turbines. *its early, I've not yet had coffee and something seems instinctively wrong about this... I'll double check later.
Quote from: Fultonius on September 14, 2021, 07:35:29 amSay there are 30m EVs, that's 144MWh (jumped to mega there). Or, 14MW for 10 hours. I.e. 2 big wind turbines. *its early, I've not yet had coffee and something seems instinctively wrong about this... I'll double check later.Off by 1000x I think!https://www.wolframalpha.com/input/?i=20+miles+*+0.24+kWh%2Fmile+*+30000000
* Instinctive answer would be a 10-15% of full charge automatic cut-off. Cut-offs can work both ways right.
Renewables isn't just solar and wind, which have intermittent supply, but also emerging technologies like tidal current power. Excess energy generated during sunny or windy periods also has huge potential for storage that is not yet being realised, as compressed air, green hydrogen, pumped hydro, mineshaft gravitational, and others I forget. District heating schemes storing excess energy as heat in shallow geothermal and abandoned mines will also reduce the electricity demanded for heating.
The whole mineshaft thing comes up regularly on UKcaving and is always debunked dispelled. Always looks like a potential on paper, but the realities of finding viable shafts/sites rules the vast majority out.
Quote from: SamT on September 14, 2021, 01:46:35 pmThe whole mineshaft thing comes up regularly on UKcaving and is always debunked dispelled. Always looks like a potential on paper, but the realities of finding viable shafts/sites rules the vast majority out.The gravity storage in mineshafts idea was covered in one of the episodes on the 39 ways to save the planet programme, here: https://www.bbc.co.uk/programmes/m000z1k0It sounded like the UK would be minor local-scale stuff. They were talking about schemes under construction in Poland on a much larger scale. Gravitricity (the company on the 39 ways programme) website mentions them scoping out S.African mines: https://gravitricity.com/
Interesting, debunked/dispelled by whom? There are proven schemes in the Netherlands, Glasgow, and the National Coal Mining Museum.
Quote from: Carl on September 14, 2021, 09:04:34 amQuote from: Fultonius on September 14, 2021, 07:35:29 amSay there are 30m EVs, that's 144MWh (jumped to mega there). Or, 14MW for 10 hours. I.e. 2 big wind turbines. *its early, I've not yet had coffee and something seems instinctively wrong about this... I'll double check later.Off by 1000x I think!https://www.wolframalpha.com/input/?i=20+miles+*+0.24+kWh%2Fmile+*+30000000Come on a sense check would show a couple of turbines are not going to be able to charge 30 million EVs overnight! But that's what this is useful for right, to get a feel for what's lacking and what's going to need to happen about it.
Also.. The concept of an average drive only being 20 miles is just that - a concept, not a useful baseline to plan generation capacity for dealing with real life EV-recharging behaviour