will there ever be a solar panel for the pan cam3?
Welcome to the Wyze User Community Forum @cntryplayr! 
I’m going to go out on a limb and say no.
Solar panels only trickle charge batteries. They do not power cams. The batteries power cams. The PanV3 has no batteries. Without batteries, you wouldn’t have a Night Vision cam.
Solar panel power output fluctuates drastically with the availability of sunlight. Solar panels cannot provide the sustained power requirements of a PanV3 cam or the demand power required when the siren activates or the motors move the cam.
Yes, you could build something up with solar and battery, but as SlabSlayer, not just a plug n play panel.