claiming green credentials from your charging source makes no sense because then you are comparing different systems and parts. the correct comparison would be a Prius owner with solar panels vs. an EV owner with solar panels. then you will see that the Prius owner has reduced their environmental impact and at a lower cost.

that's the point. for the cost of some EV, you could buy 2 or 3 x Prius, which would get you much more energy and environmental benefits than an EV.