Please explain what Solarpunk is:

Solarpunk is a sub-genre of science fiction and speculative fiction that focuses on a positive view of the future, characterized by the widespread use of renewable energy sources, sustainable architecture and design, and a focus on environmentalism and social justice. It is often depicted as a world in which technology is used to solve environmental and social problems, rather than causing them. Solarpunk is often seen as a hopeful and optimistic vision of the future, in contrast to the more dystopian or post-apocalyptic depictions of the future that are common in other sub-genres of science fiction.

Better than expected :)