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

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

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.

13 October 2026
San Francisco Bay Area, USA
PV Tech has been running an annual PV CellTech Conference since 2016. PV CellTech USA, on 13-14 October 2026 is our fourth PV CellTech conference dedicated to solar manufacturing in the USA. From polysilicon, wafers, ingots, cells and modules, to critical component suppliers including glass and frames, the event connects every stage of the value chain under one roof. PV CellTech USA also brings together investors, innovators, manufacturers and industry stakeholders to collaborate and strengthen domestic solar manufacturing across the United States.

Read Next

Premium
August 7, 2026
PV Tech Premium spoke with several industry analysts about the FCC inverter ban and how it will impact the US solar industry.
Premium
August 7, 2026
Wood Mackenzie’s Joseph Shangraw discusses the challenges facing the US plug-in solar market and the pathway to wider adoption.
August 7, 2026
The US introduced a 15% tariff on imports of products using polysilicon and set minimum prices for polysilicon and its derivatives.
August 7, 2026
Solar module manufacturer Heliene has laid off 93 employees at its Mountain Iron solar module assembly plant in the US state of Minnesota.
August 7, 2026
Array Technologies reported revenue of US$342.1 million, gross margin of 29.1% and adjusted gross margin of 30.8% for Q2 2026.
August 6, 2026
Clearway Energy generated and sold 3,585GWh of solar power in the second quarter of 2026, up from 2,800GWh in Q2 2025.

Upcoming Events

Solar Media Events
October 13, 2026
San Francisco Bay Area, USA
Solar Media Events
November 3, 2026
Málaga, Spain
Solar Media Events
November 24, 2026
Warsaw, Poland
Solar Media Events
February 2, 2027
London, UK
Solar Media Events
April 20, 2027
Istanbul, Türkiye