eMotorWerks has teamed with WattTime to launch what's claimed to be the "world's electric vehicle charging solution that minimizes greenhouse gas emissions."
This is accomplished via a smart EV charging station that can monitor the local power grid to determine when it would draw power from "particularly clean power plants - from renewables to highly efficient power plants." The charger can be set (via smart-timing algorithms) so that it only charges when this clean energy is available.
The charger is called JuiceBox Green 40.
Additional details can be found in the press release below.
Press Release Page 1
Press Release Page 2