(This is a work-in-progress.) I decided to make a hex solar array as a 28mm miniature gaming terrain piece. Right now, this just has two possible tops, a tri panel and a quad panel. I'm still working on the base for the solar panel. However, there is a rectangular slot at the back of the panels, so you can stick them to any base of your choosing.

Note from Oct. 1, 2021: The base is now complete and is now included here. The rectangular head of the base will fit into the slot at the back of the panels.