Batteries have huge potential, simply due to the fact that they're so broadly defined - must store energy, output it as electricity on demand, and be cheap. There's a high chance that we find some way to make grid-scale batteries extremely cheaply, in the future.
In the mean time, getting to 90% will basically stop climate change in its tracks, giving us time to research dirt-cheap batteries.
It doesn't even have to always be electricity on demand, sometimes we also need heat. I wonder if heat storage will be a thing we'll have in the households (or maybe it's enough to have it in district heating facilities?).
Batteries have huge potential, simply due to the fact that they're so broadly defined - must store energy, output it as electricity on demand, and be cheap. There's a high chance that we find some way to make grid-scale batteries extremely cheaply, in the future.
In the mean time, getting to 90% will basically stop climate change in its tracks, giving us time to research dirt-cheap batteries.