
Start by learning the fundamentals of how solar actually works at a technical level. The pictures show parts and results of a completely solar powered automatic watering system I built.
It is battery powered and cost about $75 USD. It has been up now consistently for 36 days since it last reset. Once you understand the fundamentals, larger systems operate on the same principles.
A world powered by solar (and other intermittent renewable sources) will have to look different than our current world because of the challenges inherent to renewables. We want power 24/7 (and we can have it) but we will have to re-build the world to accommodate it. That’s pretty punk in my book.