@liztai - I've just recently found out about this genre, too! And I'm happy to have found a more hopeful alternative than the cyberpunk and post-apoc I've consumed in the past (not that some of it isn't awesome - @GreatDismal - I've been a fan of your work for decades, but some days your handle is a little too on the nose).
Here's a list of recommended and likely good candidates that I've found (but not read, yet).
#solarpunk #books #bookstodon
Ursula K LeGuin
Always Coming Home (1985)
The Dispossessed (1974)
Ernest Callenbach
Ecotopia (1975)
Alaya Dawn Johnson
The Summer Prince
Poul Anderson
Orion Shall Rise
Kim Stanley Robinson
Pacific Edge (1990)
New York 2140
Starhawk
The Fifth Sacred Thing (1993)
Nina Munteanu
A Diary in the Age of Water
Becky Chambers
Monk and Robot series
A Psalm for the Wild-Built (2021)
A Prayer for the Crown-Shy (2022)
Sylvia Linsteadt
Tatterdemalion
Anthology
Solarpunk: Ecological and Fantastic Stories in a Sustainable World (2012)
Wings of Renewal: A Solarpunk Dragons Anthology (2015)
Sunvault: Stories of Solarpunk and Eco-Speculation (2017)
Glass and Gardens (2018)
Octavia E Butler
Earthseed series
Parable of the Sower