> I also have no idea where you got the notion that UK electricity costs are 50% transmission fees. It is 3%.[1] I expressed myself incorrectly - I meant that

> I also have no idea where you got the notion that UK electricity costs are 50% transmission fees. It is 3%.[1] I expressed myself incorrectly - I meant that the various non-generation costs, like transmission, various middlemen and fees, etc. roughly double the cost of energy between powerplant selling it and it reaching my house. > Maybe you know more than these researchers whose literal job is to know about lithium and seawater I am just slightly jaded from seeing many research breakthroughs, especially in batteries, never make it to market, and only really consider something once there has been at least one commercial facility operating. My understanding is that I can't buy lithium from seawater at the moment. > If you consider V2G idiotic, then you're effectively asserting that any form of grid battery is idiotic On the contrary, I think if you are buying a used car battery on the cheap, cycling it optimally and you don't need an overpriced Tesla-authorised mechanic to fix it, the results should be much better. Safety is less of a concern too. Or you can buy Lithium iron phosphate. I think people are very precious about their cars and have many worries about damaging the battery, some of them irrational. There are also logistical challenges, repair is harder, etc. I think the economics you outlined are the very best-case scenario, with war in Ukraine causing energy crisis and assuming nearly free electricity avaliable to charge.