Running a server completely off solar power seems like it would be a relatively easy thing to do: throw up a couple of panels, tack on a charge controller and a beefy battery, and away you go.
Instructables user [bennelson] is combining all your electrical powered needs by cramming solar power into a can ... plywood and secured a 20A solar charge controller, a four-in-one socket ...
The USB-C charger/port controller platform offers high efficiency ... Its input- and output-voltage levels also match mainstream solar-power voltage levels. The RAA489400 port controller supports ...