San Francisco has passed a groundbreaking law requiring solar panels on all new buildings under 10 stories.
This makes San Francisco the first major U.S. city to enforce such a rule.
Starting January, new commercial and residential buildings must have solar panels, pushing the city closer to its goal of 100% renewable energy by 2025.
Supervisor Scott Wiener, who introduced the Better Roofs Ordinance, emphasized the importance of using roof space efficiently to boost solar energy use.
The law, passed unanimously by the Board of Supervisors, builds on existing state laws that require roofs to be solar-ready.
San Francisco joins other cities like …
