> What % of EV drivers would have enough spare battery capacity to discharge a non-trivial amount right after their commute.
It would probably still be pretty high. Total ranges are in the hundreds of miles, but the average commute is 16 miles, so most of the capacity would still be there when you get home.
The real question is going to be whether it's cost effective. If you do that and then have to replace the battery twice in ten years instead of once, is that actually more profitable than having one battery for your car that lasts ten years and another which is purpose built for grid storage and also lasts ten years? Basically a question of time value of money vs. whether being built for purpose is sufficiently more efficient.
Not clear to me why someone would want to invest in high risk startups for a low-mid return.. there are much safer options that would give similar returns.
It would probably still be pretty high. Total ranges are in the hundreds of miles, but the average commute is 16 miles, so most of the capacity would still be there when you get home.
The real question is going to be whether it's cost effective. If you do that and then have to replace the battery twice in ten years instead of once, is that actually more profitable than having one battery for your car that lasts ten years and another which is purpose built for grid storage and also lasts ten years? Basically a question of time value of money vs. whether being built for purpose is sufficiently more efficient.