A guy here has 22KW on his home. He sized his system so he could show a loss of income. That is, in order to sue the power company he had to show he was creating power that the power company was using the power and charging others for it but not paying him for it. His lawsuit was the basis for AB920.
And to get back on the PV>EV part of the thread, on principle, he will only charge his EV at home on his Solar.