X Window was designed as a client/server architecture ... For example, all applications in Linux desktops are X clients running in the same machine as the X server. See XIE and thin client.

A tiling window manager can be a thing of efficient beauty, but with them can come a steep learning curve. Regolith Linux aims to lesson that curve and ease the transition.

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.