A key innovation of electricity is that it is a fungible form of power transmission. In particular, this allows the decoupling of concerns between the generatio

A key innovation of electricity is that it is a fungible form of power transmission. In particular, this allows the decoupling of concerns between the generation of energy and the application of energy. I hope green energy enthusiasm doesn't take us back to the days of waterwheels being directly connected to grist-mills.