California’s 579MW Solar Star begins partial operation

January 10, 2014
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

December 22, 2025
Emmvee, through its subsidiary Emmvee Energy, has begun operations at its 2.5GW solar module manufacturing plant in Bengaluru, Karnataka.
December 22, 2025
The PV Review, 2025: this year has seen many papers and reports on solar PV modules reliability and performance issues, especially with TOPCon.
Premium
December 22, 2025
Tracker producer Nextracker has rebranded as Nextpower to reflect the wider portfolio of products and services it now offers.
December 22, 2025
As utility-scale solar projects grow, managing voltage drops remains a critical challenge for EPCs and system designers. Jason Coleman of Terrasmart explores how optimising eBOS architecture offers a solution while delivering cost savings.
December 22, 2025
Altus Power has acquired a 234MW solar portfolio from independent power producer Greenbacker. 
December 19, 2025
German renewable energy developer BayWa r.e., along with its Dutch subsidiary GroenLeven, has sold a 46MW floating solar PV (FPV) project in the northern province of Friesland, the Netherlands.

Upcoming Events

Solar Media Events
February 3, 2026
London, UK
Solar Media Events
March 24, 2026
Dallas, Texas
Solar Media Events
April 15, 2026
Milan, Italy
Solar Media Events
June 16, 2026
Napa, USA
Solar Media Events
November 24, 2026
Warsaw, Poland