>>652073Is the site colocated with any other providers (AM/FM/TV, cellular, commercial radio)?
Might look into local ham radio clubs in the area too, see what tools/vehicles/manpower they have to offer.
Also, this is why solar sucks. Good for some applications, but running a radio site is not one of them. An appropriately-sized standby genset with a 200-300gal UST can run a site for a long time, and generally works more reliably than solar.