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My point isn't that we should actually shrink EV batteries and use the excess for stationary storage, my point is that car batteries as a demand-leveling mechan
by NickM 4y ago
My point isn't that we should actually shrink EV batteries and use the excess for stationary storage, my point is that car batteries as a demand-leveling mechanism is not likely to be an optimal solution.
That said, it's not something that's really happening right now anyway, so the "power your home with your car at night" idea seems unlikely to take off unless there is a (possibly misguided) legislative push for it.
- qqqwerty 4y agoBatteries are a bit too expensive to make sense as stationary storage outside of some specialty cases right now. But EVs have been economical for a while. So while we wait for battery prices to drop, two way EV charging absolutely make sense as a transition technology. Most of those EV batteries are sitting unused for large chunks of the day, and the entire capacity of the battery is often only needed by the driver a few times per year. Adding two way charging is not a prohibitive cost, and that installation can be reused if/when an onsite battery is added in the future. The rest of the program can be managed with software.
- tsimionescu 4y ago> Most of those EV batteries are sitting unused for large chunks of the day Yes, that is the point of having a battery, or any fuel storage of any kind. Especially one that degrades with use and that doesn't even change its weight based on being full (which could potentially offset some of the costs).