We're the other way round, 2 EV's but no battery. A battery to cover the peak prices would be great.I think it’s less than it used to be with Powerwall2, just haven’t got an EV to charge foc with the excess.
My wife is at home now so I can alternate cars and try to fill from the sun only. That would work better if the Zappi was working properly. I'm only monitoring it from the app but it seemed to stop charging the car much earlier than it should have done.