I've picked up Conquest of Bread by Peter Kropotkin at the request of a comrade at our mutual aid organization.

The Bread Book is pretty good, but Anarchism and Other Essays by Emma Goldman would probably be better when it comes to actual Praxis.

I also wouldn't discount Marxism either. Anarchism is appealing to new leftists, but there are many misconceptions about Marxism I see in Anarchist circles, like the idea of Communism not having a Government. Marx wasn't an Anarchist, he advocated for central planning and a government run by the people, but without the previous elements of Capitalist society he called the "state," ie Private Property Rights and Capitalist policing.

But I still don't think you understand that Solarpunk is a point of intersection to extend a post scarcity, environmental sustainability and social justice to people that are less aware of these concepts.

It's a vibe, and an aesthetic. People fans of the aesthetic can also push methods of theory and praxis, but as it stands it is generally describing an ideal, without the structures or actions necessary to get there. Marxism and Anarchism both have those answers, Solarpunk by itself does not, which is why I am saying it is vulnerable to bad actors.