First Solar’s Series 6 modules go live at 280MW California Flats project

Facebook
Twitter
LinkedIn
Reddit
Email
The project at the Hearst cattle ranch is first to use the firm's new Series 6 modules. Source: Hearst.

The 280MW California Flats project has reached commercial operation, with First Solar’s large format Series 6 modules sending power to the grid for the first time at this scale.

The site was developed by First Solar before asset management firm Capital Dynamics bought it in August 2017.

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 California Flats Solar Project is also the first to feature our innovative Series 6 PV module technology, which is setting the standard for affordable and cleaner renewable energy,” said Troy Lauterbach, senior VP of EPC and Energy Services for First Solar. “We are thrilled to partner with Capital Dynamics and Hearst to deliver on a shared commitment to building a sustainable energy future,” he added.

The site is part of the Hearst cattle ranch, which provides beef to Whole Foods.

Power from the site is sold to utility and commercial customers under two long-term power purchase agreements (PPA).

“The California Flats Solar Project helped us meet our goal of finding a sustainable solution to keep the 73,000-acre Jack Ranch intact as a historic working cattle ranch using traditional and time-proven ranching methods for our grass-fed Hearst Ranch Beef program,” said Steve Hearst, Vice President and GM of Hearst Western Properties.

“Countless hours have been invested by Hearst and our partners in bringing this sizable, complex project to fruition and ensuring it operates seamlessly with our cattle operation and ranch environment,” he added.

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.
16 June 2026
Napa, USA
PV Tech has been running PV ModuleTech Conferences since 2017. PV ModuleTech USA, on 16-17 June 2026, will be our fifth 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 2027 and beyond.

Read Next

September 15, 2025
Sunrun has priced a securitisation of leases and power purchase agreements, taking its non-recourse debt capital raised in Q3 above US$1.5 billion. 
September 15, 2025
Norwegian energy firm Statkraft has agreed to divest a portion of its renewable energy portfolio to Serentica Renewables.
September 12, 2025
Colombian energy supplier Celsia is seeking more than US$1.2 billion in investment to build wind and solar generation projects in Peru. 
September 12, 2025
ACME Venus Urja has secured INR3.8 billion (US$43 million) to develop and construct a solar-plus-storage project in Barmer, Rajasthan.
Premium
September 12, 2025
Vote Solar's Sean Garren tells PV Tech Premium that Georgia Power's latest IRP is 'skewed so heavily towards fossil fuels'.
September 11, 2025
Founder Group has won a RM10 million (US$2.3 million) engineering, procurement, construction and commissioning contract for a 30MW solar plant in Malaysia.

Subscribe to Newsletter

Upcoming Events

Solar Media Events
September 16, 2025
Athens, Greece
Solar Media Events
September 30, 2025
Seattle, USA
Solar Media Events
October 1, 2025
London, UK
Solar Media Events
October 2, 2025
London,UK
Solar Media Events
October 7, 2025
Manila, Philippines