Optimistic SF?

Solarpunk is an artistic and cultural movement that encompasses, but isn’t limited to, areas such as art, technology, architecture, fashion, film, cuisine, and of course literature. From a literary perspective, it’s a subgenre of science fiction that was born out of, and perhaps is the next logical step after, cyberpunk. Solarpunk stories take place in futures where humanity, technology, and nature live in harmony rather than in conflict. Often, solarpunk stories deal with hypothetical technological innovations that help humanity avert or creatively adapt to climate change. And while solarpunk tales don’t necessarily take place in utopias, they are definitely not dystopias. Rather, they are overflowing with hopeful characters and communities optimistically striving to create a new and better world.

see more at Tor.com: The Solarpunk Future: Five Essential Works