I think it's possible that the economics of electricity will change dramatically in the next few years. Already, in several states, we see days where solar gene

I think it's possible that the economics of electricity will change dramatically in the next few years. Already, in several states, we see days where solar generation momentarily dramatically exceeds demand - and with solar so cheap now, that's only going to get more extreme. Charging batteries seems like a good thing to do with a power surplus, and it makes more economic sense to charge a consumer's battery than to fill up some grid-storage solution.