I'm aiming for at least 7.2kw charging rate, or higher. Supposedly all but the smallest electric cars can do that. I haven't made any purchasing decisions, yet. But I'm just thinking of options.

One of the things that will hurt electric cars is that they just can't do the "quick fill up" thing that liquid fuel vehicles can do. That's going to make it very difficult to adopt electric cars for anything but local usage. But these slow level one chargers (120 volt 15-20 amps) aren't really going to help much unless you get the miniature cars.

FYI, a friend of mine is building his own electric car on an old frame with new motors and batteries. He plans to just use it for show and grocery runs, and charge it totally from solar and wind. It will be interesting how he sets this up.