Comment by neallindsay

There's lots of talk about grid-scale batteries to shift cheap electricity from solar panels into the night time. But batteries at the periphery can also help a lot because they can just stop charging (like the example in this article) or even feed energy back into the grid. Electric cars mostly don't have the circuitry to do this yet, but they're becoming a huge resource that will be tappable this way. Most of them are massively over-provisioned for the way that they're used 350 days out of the year.