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

December 16, 2025
Ecoprogetti has installed a new 400MW module production facility in Oman, to be operated by American Advanced Clean Energy (AACE).
December 16, 2025
The global solar inverter industry will contract over the next two years as major markets in China, Europe and the US confront new volatility, according to energy market analyst Wood Mackenzie.  
December 16, 2025
GameChange Solar will supply 1.2GW of trackers for ACWA Power’s 2GW Khulis solar PV project, currently under construction in Saudi Arabia.
December 16, 2025
The EU’s Economic Security Doctrine has identified solar inverters as a high-risk dependency, a move which the European Solar Manufacturing Council (ESMC) has lauded.
December 16, 2025
Voltage Energy has received what it calls the solar industry’s first full-system 2kV EBOS certification from UL Solutions.
Premium
December 15, 2025
Imperial Star's DomesticIQ calculator aims to bring some clarity to the complexities of navigating US solar domestic content requirements.

Upcoming Events

Upcoming Webinars
December 17, 2025
2pm GMT / 3pm CET
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