California’s 579MW Solar Star begins partial operation

Facebook
Twitter
LinkedIn
Reddit
Email

California’s 579MW Solar Star project has begun partial operation and is now supplying electricity to California’s grid.

Owner MidAmerican Solar and SunPower, which is building the project, announced this week that the first portions of the two projects that together make up Solar Star are around 10% operational, with the first 57MW now on line.

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 project, previously dubbed Antelope Valley, was acquired by MidAmerican from SunPower last year for a reported US$2 billion. MidAmerican is part of investor Warren Buffet’s Berkshire Hathaway empire.

Work began on Solar Star last April and it is currently the world’s largest PV project under construction.

It will use SunPower's modular Oasis Power Blocks technology, developed for large-scale PV power plants.

Mike Fehr, MidAmerican Solar's general manager at the Solar Star projects, said: “This announcement is significant for the state of California. It demonstrates that we are fulfilling our promise to the local community and regulators and delivering expected results, based on our construction timeline, to help California meet its mandate to generate 33% of its power from renewable sources by 2020.”

Large-scale PV projects such as Solar Star are now the key driver of growth in global PV demand.

According to analysis this week by market research firm NPD Solarbuzz, large-scale PV development accounted for 26 of the 36GW of global PV demand in 2013, around 72%.

In 2014, this figure is expected to increase to 75%, Solarbuzz said. The USA was the world's third largest large-scale PV market in 2013 after China and Japan.

-To read more about how modular design and construction is being used to cut costs in large-scale PV power plants, read our feature on Solar Business Focus, 'PVs plug-in power plants'

Read Next

June 19, 2026
Origis has secured a US$900 million package, which consists of US$650 million in credit facilities and a US$250 million LoC facility.
June 19, 2026
Swiss electrification company ABB has launched a new power conversion portfolio for the solar PV and BESS industries.
June 19, 2026
The Solar Energy Industries Association has launched an interactive map showing that solar development occupies only 0.07% of US farmland.
June 19, 2026
Novva has acquired the 120MWp San Jose Solar Power Plant (SJSP) in the Philippines from the Mabuhay Power Holdings Corporation. 
June 19, 2026
Huasun Energy will launch its Himalaya PLUS HJT module in Europe at next week’s Intersolar industry event.
Premium
June 19, 2026
Shreeyashi Ojha reports on a European PV recycling venture looking to maximise the value of materials recovered from end-of-life modules.

Upcoming Events

Media Partners, Solar Media Events
June 30, 2026
Sacramento, California
Media Partners, Solar Media Events
August 25, 2026
São Paulo, Brazil
Media Partners, Solar Media Events
September 1, 2026
Mexico City, Mexico
Solar Media Events
September 9, 2026
Schaumburg, Illinois
Media Partners, Solar Media Events
September 9, 2026