San Francisco to require rooftop solar on all new buildings

Published by

PV Magazine

The new legislation requires solar PV systems, solar water heating systems or a combination of the two. San Francisco has set a goal to use 100% renewable energy by 2025 in addition to other ambitious environmental targets.

New commercial and residential buildings of up to 10 stories in San Francisco will have to install rooftop solar systems. Powertree Services/California Energy Commissi
New commercial and residential buildings of up to 10 stories in San Francisco will have to install rooftop solar systems.
Powertree Services/California Energy Commissi

San Francisco on Tuesday became California’s first major city to mandate solar installations on new buildings.

The move, which goes into effect in January, follows similar mandates passed by smaller municipalities Lancaster and Sebastopol in 2013, according to the San Francisco Examiner.

New commercial and residential buildings of up to 10 stories in height will have to install rooftop solar systems for heat or electricity under legislation that was unanimously approved by the city’s Board of Supervisors.

“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 legislation.

San Francisco has set a goal to use 100% renewable energy by 2025 in addition to other ambitious environmental targets.

The San Francisco Examiner quoted Barry Hooper, the Department of Environment Green Building Coordinator, who said last week that 100% renewable energy depended “on both development of renewable energy resources and continued improvement in energy efficiency.” He added that the ordinance represented another “straightforward and pragmatic step” toward that goal.

The legislation requires solar PV systems, solar water heating systems or a combination of the two.

California state law already requires most new buildings to have 15% of the rooftop “solar ready” in order to facilitate the installation of PV systems, the newspaper said.

The legislation adds to San Francisco’s environmental efforts, which also includes a new renewable energy program, known as CleanPowerSF, set to launch later this year.

Source: PV Magazine. Reproduced with permission.

Share
Published by

Recent Posts

Businesses “do the math” and want to go electric – right up until they try to connect to the grid

Australian businesses looking to ditch gas and diesel can do the sums, find electrification will…

18 September 2026

Wind and solar reach record share of Australia’s main grid, nearly half of it from rooftop PV

An abundance of rooftop solar generation has helped set a new record high for the…

18 September 2026

Energy Insiders: The “impossible” wind project that broke the investment drought

Windlab's John Martin on the project that broke the investment drought for big wind, and…

18 September 2026

“Massive loophole:” Consultation paper stokes doubt on data centre emissions, wind and solar mandates

Federal Labor's determination to power new data centres with renewables, and to minimise emissions and…

18 September 2026

Huge Liddell battery hits full commercial operations, completing state’s “firming” line-up ahead of El Niño summer

The huge, two-hour battery built at the site of a partly demolished coal plant reaches…

18 September 2026

Australian green hydrogen hopeful launches AI-backed electrolyser production line

An Australian startup aiming to make green hydrogen work for heavy industry has launched an…

18 September 2026