My favorite part of PV is that you can scale it to fit any power generating capacity, from a residential roof all the way up to a 50MW farm. It’s fairly linear, too, in terms of land usage and cost, which makes it easy to understand.
Production capacity is scaling too, though just barely at the edge of what we need. I really wish that governments would commit hard to decarbonization of the hydrogen market (including ammonia for fertilizer), through solar/wind + elctrolyzers. The only thing stopping further scaling of production capacity is the demand side of things. Having an extra 50-100 GW of solar production to decarbonize industry would really speed the climate transition. But until there's the guaranteed market for it, the market is going to develop very slowly until green hydrogen is cheaper than natural gas as an input.
Germany pushed solar along when it wasn't cheap, greatly accelerating the fall off solar prices. All governments should push industrial chemical process decarbonization together.