Letter to Editor, Communications of the ACM., 2020, 63(6) page 6. DOI

Sustainable Charge

In his February column, Vinton G. Cerf called for more durability from manufacturers and cited Tesla as an example. I would like to suggest that Tesla and other makers of electric cars include with every purchase a garage battery of the same capacity as that in the automobile. The home battery would have suitable programmable switching to enable charging at steady sustainable rate, for example, from renewable resources or overnight, without the wholesale need to strengthen the domestic power grid. This would allow instant vehicle recharging when the driver returns home.

W.B. Langdon, London, U.K.

See also Response from the Editor-in-Chief, Andrew A. Chien