Solar Energizer:

1 Acre of farm means how many devices you are connecting in them and how much load you required with number of hours. Please check your nearest are if anyone installed those systems.
I think you already got solution for your farm if not I am giving some solution. In India almost energizer chips comes from China and fixed them in metal bodies by Indians.
Try to get a best battery from a reputable company that will lasts longer.
Get best solar panels, wire, and their fittings from Indians since this also boost your fencing with good quality.