To Catch the Sun (https://www.kickstarter.com/projects/lonnyg/to-catch-the-sun) is a book of inspiring stories of communities coming together to harness their own solar energy, with the nitty-gritty details so you can do it too!
Learn how to design and build a photovoltaic system for engagements like:
A small home in a financially rich country
A few homes in a financially poor country
School rooms and community spaces
Laptop and cellphone chargers
A tiny home or #vanlife
Glamping and backpacking equipment
Emergency supply, e.g., powering an oxygen machine during power outages
Isolated loads like electric gates, pumps, greenhouse fans, backup generators, and telecommunications equipment
You had me at “Zombie-apocalypse equipment” (and I wonder why none of the zombie shows I’ve seen take renewables seriously – it’s all motor vehicles and dirty clothes).
Then again, I believe that Solar IS Civil Defense (https://www.dailykos.com/stories/2007/3/30/317777/-)