San Francisco’s Scott Wiener: ‘Mandatory’ solar panel legislation ‘isn’t enough’

Facebook
Twitter
LinkedIn
Reddit
Email
Wiener's new legislation seeks to accelerate the pace of integrating solar into the city's electricity mix. Source: Flickr/Geograph

San Francisco Senator Scott Wiener has readied new legislation on solar panels, saying that a city ordinance passed in April that required all new construction in the city to include solar panels isn’t enough.

The bill is expected to be passed today.

This article requires Premium SubscriptionBasic (FREE) Subscription

Unlock unlimited access for 12 whole months of distinctive global analysis

Photovoltaics International is now included.

  • Regular insight and analysis of the industry’s biggest developments
  • In-depth interviews with the industry’s leading figures
  • Unlimited digital access to the PV Tech Power journal catalogue
  • Unlimited digital access to the Photovoltaics International journal catalogue
  • Access to more than 1,000 technical papers
  • Discounts on Solar Media’s portfolio of events, in-person and virtual

Or continue reading this article for free

Current law mandates that all new buildings with a permit received after 1 January 2017 are to be “solar ready”; with either solar panels or solar water heaters atop commercial and residential buildings shorter than 10 floors. This measure was passed under a unanimous vote from the San Francisco Board of Directors.

This new legislation, like the ordinance it is modelled on, requires solar panels to be installed on 15% of roofs.

“We figured if you are going to make it solar ready, just put the panels on and start out with solar energy integrated into the building,” Wiener said to the San Francisco Chronicle. “People are frustrated with the slow pace of moving toward renewable energy, and people have a sense of urgency that we don’t have time to waste. We need to move away from a carbon-based economy.”

There is some uncertainty with the passing surrounding the additional cost of solar, which will likely cause the cost for building homes to accelerate housing prices. Wiener however is confident that the cost of solar won’t be a deterrent for the bill passing.

“It’s not a significant cost,” he said. “It either pays for itself over time or you don’t even have to own the panels. You can have a third party come in and own and maintain the panels. That’s why we got little pushback from the development community in San Francisco.”

Under the bill, solar can either be purchased by construction workers or purchased and owned by a third party.

San Francisco was the first major US city to introduce a mandatory solar requirement. Other LA cities including Santa Monica, Lancaster and Sebastopol also require solar on new buildings. California continues to be the leading state for solar in the nation, becoming the first state ever to add more than 1GW of utility-scale PV in a single quarter, in Q3 2016.

17 June 2025
Napa, USA
PV Tech has been running PV ModuleTech Conferences since 2017. PV ModuleTech USA, on 17-18 June 2025, will be our fourth PV ModulelTech conference dedicated to the U.S. utility scale solar sector. The event will gather the key stakeholders from solar developers, solar asset owners and investors, PV manufacturing, policy-making and and all interested downstream channels and third-party entities. The goal is simple: to map out the PV module supply channels to the U.S. out to 2026 and beyond.
7 October 2025
San Francisco Bay Area, USA
PV Tech has been running an annual PV CellTech Conference since 2016. PV CellTech USA, on 7-8 October 2025 is our third PV CellTech conference dedicated to the U.S. manufacturing sector. The events in 2023 and 2024 were a sell out success and 2025 will once again gather the key stakeholders from PV manufacturing, equipment/materials, policy-making and strategy, capital equipment investment and all interested downstream channels and third-party entities. The goal is simple: to map out PV manufacturing in the U.S. out to 2030 and beyond.
21 October 2025
New York, USA
Returning for its 12th edition, Solar and Storage Finance USA Summit remains the annual event where decision-makers at the forefront of solar and storage projects across the United States and capital converge. Featuring the most active solar and storage transactors, join us for a packed two-days of deal-making, learning and networking.

Read Next

May 20, 2025
Solar PV additions have slowed down in the first quarter of 2025 in India, with 6.7GW, according to a report from Mercom India Research.
May 20, 2025
SOLV Energy has announced plans to build more than 6GW of new utility-scale solar and storage capacity in the US.
May 20, 2025
The three projects, Mammoth South, Mammoth Central I, and Mammoth Central II, have a generation capacity of 300 MW each.
May 20, 2025
Third-party ownership (TPO) of non-residential projects in the US has led commercial and industrial (C&I) and community solar financing in 2024.
May 20, 2025
Changes to tax credits under the Inflation Reduction Act (IRA) could “jeopardise” nearly 300 US solar and energy storage manufacturing facilities, according to trade body the Solar Energy Industries Association (SEIA).
May 20, 2025
'We’re here because you do it really well, and we want to learn from you,' Abigail Ross Hopper, CEO of SEIA, told PV Tech Premium.

Subscribe to Newsletter

Upcoming Events

Solar Media Events
May 21, 2025
London, UK
Solar Media Events
June 17, 2025
Napa, USA
Solar Media Events
July 1, 2025
London, UK
Solar Media Events
July 1, 2025
London, UK
Solar Media Events
July 8, 2025
Asia