Same instance yeah. This instance would make sense for a book specific community regardless, but I think there’s something to be said for just using the general solarpunk community.

Agreed lemmy search can be hard lol

https://slrpnk.net/c/solarpunk

Fits the bill. It’s not book specific, but I suspect books would be appreciated there, and given the niche I don’t imagine it needs to be so specifically fractured.