I have the Ecowitt HP-10 camera, which although isn’t totally amazing, it does have the job, it has a static lens, it is WIFI and doesn’t have infrared. Now I am looking about playing with a solar install, and am struggling to find something similar on a real budget. So if anyone has any thoughts on a camera that would fit the role please let me know 
Marcus
I received an ad a few days ago. I will try to find it again. Only downside was it didn’t stream, only snaps, and maybe only when motion is detected. But it was wifi and battery with solar panel included. I didn’t dig into it further. From Amazon:
Reolink Argus 4 Pro - 4K Solar Security Camera, ColorX Night Vision, 180° Blindspot-free View, Wireless Outdoor Camera with Dual-band Wi-Fi 6, Smart AI Detection, No Monthly Fee, with 6W Solar Panel