[throwaway50606]

I'm not sure how that helps if the grid is already nearly overloaded and we need gas/coal to cover peak demand. The problem is not the charger and its small battery, the problem is generating clean power and transmitting it.

[jonhohle]

He’s solving the transmission problem. A portable battery does not need to be charged from the grid.

Edit to add: I have about 1.2kW of storage that can be charged by solar in a few hours that takes up about the space of a 5 gallon NATO jerry can. It can be charged thousands of time for the initial price paid. That’s with 2020 tech. Certainly density and efficiency will improve as market pressures increase.

[throwaway50606]

How do you charge that small battery? Going to the powerplant with it doesn't seem like a good answer.

[jonhohle]

I don’t know if you saw my edit, but in my case, it’s charged by either a portable solar panel or (optimally) home solar panels.

In the not so distant past there were plans for neighborhood scale nuclear reactors. That would go a long way towards distribution, redundancy, and scale issues.