[jacquesm]

> We need grid-scale energy storage.

We need some grid-scale energy storage. But having distributed storage is a welcome element as well, it makes the grid far more stable and reduces the impact of peak production times as well as the day/night cycle.

Anyway, on a planetary scale energy is more of an engineering challenge than a serious problem, the issues all stem from the hundreds of local fiefdoms that all vie for control of a slice of the pie.