>If there does end up being some sort of HUGE central energy storage happening, I doubt it would be in batteries. Talk about being difficult/expensive to scale.

>If there does end up being some sort of HUGE central energy storage happening, I doubt it would be in batteries. Talk about being difficult/expensive to scale... Why would it be difficult/expensive to scale? As long as battery costs go down, there's absolutely no issue scaling. You just put as many of them as you want together.