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

October 16, 2026
Recurrent Energy has announced the start of commercial operations at the 200MWp Villameca Project in Castilla y León, Spain.
Premium
October 16, 2026
Markus Beck of RCT Solutions discusses how the US PV manufacturing can be sustained beyond the current boom.
Premium
October 16, 2026
Industry experts from all fields of the solar PV industry gathered this week at PV CellTech USA to discuss the US solar manufacturing sector.
October 16, 2026
Norfund and Impact Fund Denmark have signed agreements to take a 49% interest in the 500MWp Ixus Bugallon Solar Power Project.
October 16, 2026
Eleven German associations oppose proposed solar prosumer grid fees, warning they could deter investment and slow expansion.
October 16, 2026
GES has secured four new EPC contracts for three new solar clusters and a standalone solar PV plant in Spain.

Upcoming Events

Solar Media Events, Upcoming Webinars
October 21, 2026
2pm AEDT
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