While people usually focus on carbon neutrality, I often think decentralization is renewables' most underappreciated aspect. Everything it touches can happen at the home and community level. The Haber-Bosch process is the epitome of the 20th century large scale heavy industry model. Now here is a solution replacing it at the level of individual farms.

I suspect much of robotics will be decentralized too, and with that, they may decentralize automated manufacturing. In a few decades, it may seem quaint that people shipped so many things halfway around the world.