Zeph is a user on sunbeam.city. You can follow them or interact with them if you have an account anywhere in the fediverse.
If you don't, you can sign up here.
I've only finished the first chapter so can't really give a sure recommendation, but it seems like the #sffbookclub pick this month (The Lamb Will Slaughter The Lion) might interest #solarpunk fans.
A point brought up in discussion has been how hard it is to imagine trusting near strangers with survival. Wound up being the core of my dream last night, which was pretty neat and hopeful, made me feel better about my day.
@chaognostica I really enjoyed it as I read it. It's a little bleak, but loved the concept and the writer has a very clear writing style