"California becomes first U.S. state to require solar panels on new homes [from 2020]"
"The decision ... came despite estimates it would raise the up-front cost of a new home by nearly $10,000 in one of the most expensive parts of the country.
"The Commission estimated the standards will add about $40 to monthly mortgage payments but will compensate for that by saving residents $80 a month on energy bills."
Sunbeam City is a Libertarian Socialist solarpunk instance. It is ran democratically by a cooperative of like-minded individuals.