Work starts on California’s largest floating solar project

Facebook
Twitter
LinkedIn
Reddit
Email
The 1.78MW is the largest in California...for now. Source: Ciel et Terre.

Construction has begun on what will be California’s largest floating solar system.

The 1.78MW system is being installed by Ciel et Terre on a recycled water storage facility in the town of Windsor. It will provide 90% of the treatment and pumping station’s electricity needs.

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

The modules will be mounted on Ciel et Terre’s Hydrelio floating racking system. It will be tethered to the shore.

Ciel et Terre has agreed a 25-year power purchase agreement (PPA) with the town’s authorities.

“By entering into a PPA, the town can substantially reduce its energy overhead without any investment,” said Eva Pauly-Bowles, representative director, Ciel & Terre USA. “Floating solar is becoming an attractive energy alternative for municipalities seeking to reduce operating costs and preserve valuable land for other developments,” she added.

The installed system covers 22% of the water surface with the possibility of an extension in the future.

Craig Gini, VP and renewables general manager for the installer Collins Electrical Company, said: “Floating solar is an excellent alternative to conventional solar arrays and it’s simpler and faster to install. We expect more of our California customers will be installing floating solar systems in the coming months.”

Read Next

August 27, 2026
US President Donald Trump has banned the import of inverters, transformers and other power equipment that pose a potential risk to US grid security.
Premium
August 27, 2026
Domestically produced solar glass is a key gap in the US PV manufacturing ecosystem. Tom Kenning reports on efforts to kick-start local production of this vital material
August 27, 2026
Burns & McDonnell and Gritt partner to deploy AI-powered robotics for safer, more predictable utility-scale solar construction.
August 27, 2026
US eBOS manufacturer Shoals has been granted a successful verdict and US$96 million in damages by a court in North Carolina in its intellectual property dispute with fellow US manufacturer Voltage.
Premium
August 26, 2026
UL Solutions warns that US plug-in PV faces key safety challenges, with UL 3700 aiming to address fire, shock and circuit-overload risks.
August 26, 2026
California’s Assembly has unanimously voted in favour (73-0 and six no votes registered or NVR) of a balcony solar bill, Senate Bill 868.

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