-Pre-Fusion is a standalone submod of Modular Armor. All solar panels, even modded ones, produce 3x as much power. This only brings solar panels up to 480kw, out of the 750kw of vanilla fusion reactor taking up 16 spaces, so it isn't a massive boost. just enough to make them actually produce power in combat, and supply personal roboports.

More important now given fusion reactors are significantly higher tech than they used to be....