You have to get the Energy Efficient plate. The program ended for regular cars but Ev still qualifies.
So really the only way to get any Ev state incentives in Arizona is to have a specific license plate design and that single incentive is HOV access
. I mean its cool but its worthless once you leave the state on say a road trip because its only "valid" in AZ and it has no real tangible value.
Man I really want that discounted registration lol. Thats actually worth a couple grand in the long run.