San Francisco will require rooftop solar systems on all new homes and commercial buildings up to 10 stories in height under legislation approved unanimously last week by the city’s Board of Supervisors.
The legislation takes effect January 1, 2017.
“In an era when we are reminded daily of our rapidly changing climate, it is so important that we continue our strong push to alternative, non-fossil fuel energies,” said Supervisor Scott Wiener, who introduced the measure. “Solar energy is a key part of our move to a clean energy future.”
San Francisco has set aggressive climate goals for 2025, including 100% of all energy supplied by renewable sources. “This ordinance represents one more straightforward and pragmatic step toward that goal,” said Green Building Coordinator Barry Hooper. “It’s been demonstrated as being highly cost-effective.”
Under the legislation, new buildings must include rooftop photovoltaic systems, solar hot water equipment, or a combination of the two. “State law requires most new construction to have 15% of the rooftop solar ready, meaning it would be feasible to install photovoltaic systems at some point,” the Examiner explains. “Wiener’s legislation takes the requirement a step further, by actually requiring the installation.”