Project Focus: SunPower adds 40MW capacity to California Valley Solar Ranch for PG&E

April 30, 2010
Facebook
Twitter
LinkedIn
Reddit
Email

SunPower has signed an agreement with Pacific Gas and Electric (PG&E), completing contractual arrangements between the companies for the development of a 250MW solar photovoltaic power plant in San Luis Obispo County, CA.

The agreement adds 40MW of capacity to SunPower’s existing contract with PG&E for 210MW, which was executed in August 2008. When complete, the 250MW California Valley Solar Ranch is expected to be one of the largest PV power plants in the world.

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 Valley Solar Ranch agreement was designed to accommodate the additional 40MW capacity, without having to amend SunPower’s county permit application. The solar plant will be completed in phases, with the first phase expected to begin operation in 2011.

“We are thrilled to continue to advance one of the first central station solar power plants in the world with PG&E and in coordination with San Luis Obispo County,” said Howard Wenger, president of SunPower’s utilities and power plants business group. “The California Valley Solar Ranch will generate pollution-free solar power that is competitive with new, conventional peak power.  Our incremental 40MW agreement with PG&E provides more visibility into our power plant pipeline in 2011 and beyond.”

SunPower has revised aspects of its original power plant design in response to feedback from the local community. The new plan minimizes environmental impact by reducing the amount of traffic in the area during construction to protect local wildlife habitat and migration patterns.

Construction of the California Valley Solar Ranch is contingent on a number of factors, including the receipt of all applicable permits, completion of transmission upgrades and financing.

Read Next

February 18, 2026
Meralco PowerGen Corporation has completed initial grid synchronisation and energisation of the 3.5GW MTerra solar project, which includes a 4.5GWh battery energy storage system (BESS). 
February 18, 2026
Octopus Energy has announced an investment of 'nearly' US$1 billion into Californian clean energy, including a solar-plus-storage project.
Premium
February 18, 2026
Data collection and analysis in solar PV installations is increasingly sophisticated, particularly relating to grid interaction and weather forecasting.
February 18, 2026
Utility-scale solar and wind curtailment in Australia’s NEM reached a record high of over 7TWh in 2025, according to analyst Rystad Energy.
February 18, 2026
Testing and Certification company UL Solutions has launched a new cybersecurity certification programme for distributed energy resources (DER) and inverters.
February 18, 2026
'Advanced forecasting tools are already improving solar and demand predictions by over 30%,' writes Schneider Electric's Frédéric Godemel.

Upcoming Events

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
October 13, 2026
San Francisco Bay Area, USA
Solar Media Events
November 3, 2026
Málaga, Spain