https://www.youtube.com/watch?v=hHI61GHNGJM

Andewism has a ton of great videos about it I suggest watching more than just this one to get an idea. That video I linked is a good introduction but its 3 years old so some of the more recent videos have a more evolved view on it.

At the moment Solarpunk is a somewhat small and not very well defined movement, but it's slowly growing and coming into its own. It started as a call to writers to write more hopeful fiction about the future as a response to the disproportionate prevalence of dystopian fiction, chiefly cyberpunk.

Here is a more comprehensive write-up about it. Solarpunk imagines a future where humanity finds a way to live in balance with nature, technology, and each other, with a heavy focus on being realistic, grounded, and attainable. Politically it's very socially progressive, environmentalist, anticapitalist, and anti-authoritarian.