The solar plant area is south of Las Vegas, the ranch north and east of LV. They are not trying to turn the ranch into a solar plant.
But the area in contention isn’t Bundy’s land. It’s public land and between the two fingers of Lake Mead which is pretty much all the water NV has or will ever have and prime recreational area. That’s why they want the cattle gone.
Also, over half are unbranded feral cattle. Bundy is a sloppy rancher if over half of the stock is unbranded.
I personally believe Bundy is using anti-government sentiment to his advantage but do not think he is legally in the right.
I agree with that. He has ~7 (adult) kids so it would seem that they could run a round up/branding exercise every year.