In Two-Way Charging, Electric Cars Begin to Earn Money From the Grid

The New York Times:  WASHINGTON — Finally, payback for the plug-in.

A line of Mini Coopers, each attached to the regional power grid by a thick cable plugged in where a gasoline filler pipe used to be, no longer just draws energy. The power now flows two ways between the cars and the electric grid, as the cars inject and suck power in tiny jolts, and get paid for it.

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