Terra-Gen and Mortenson to build ‘world’s largest’ solar-plus-storage project

Facebook
Twitter
LinkedIn
Reddit
Email
Image: Sunpower.

Renewable energy developer Terra-Gen has partnered with construction firm Mortenson to build what they claim is the world’s largest standalone solar-plus-storage project to date.

Called the Edwards & Sanborn energy project, it consists of 1,118MW of solar and 2,165MWh of energy storage in Kern County, which has become California’s unofficial large-scale solar capital due to the number of projects being built there.

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

Terra-Gen’s project will supply energy for “all hours of demand”, according to Brian Gorda, the company’s vice president of engineering.

The developer said it will break ground on the project in early 2021, and expects it to come online by the end of 2022. It will utilise more than 2.5 million solar and more than 110,000 lithium-ion battery modules, according to Terra-Gen.

“Terra-Gen is excited to push the industry to new heights and build a plant that provides energy for all hours of demand,” Gorda said.

The project has already received interest from corporate customers. Supplier LevelTen Energy has facilitated a deal between Terra-Gen and Starbucks that will see the coffee chain purchase 24MW of solar power and 5.5MW of battery storage from the new Kern County facility. Starbucks said in a separate announcement the deal will supply renewable energy for 550 branches in California.

Starbucks has previously called on LevelTen to bolster its use of renewables. The matchmaking service helped to develop a 146MW renewable portfolio through a string of power purchase agreements (PPS) in June 2019, which is set to power over 3,000 stores through solar and wind plants in Texas, North Carolina and the US Southwest Power Pool next year.

Trent Mostaert, Mortenson’s vice president and general manager of solar, said the Edwards & Sanborn project will “redefine the impact these systems will have on our clean energy future”.

Read Next

May 18, 2026
RUMSL has launched two solar-plus-storage projects in India designed to provide power supply during peak demand periods.
May 18, 2026
Danish IPP European Energy has started constructing a 225.5MW agrivoltaic solar PV project in Sicily, which it claims will be the “largest” such project in Italy.
May 18, 2026
ACEN Australia has revealed an 87% year-on-year increase in generation output for the first quarter of 2026, reaching 528GWh.
May 15, 2026
ISC Konstanz is upgrading its cleanroom facilities to operate a fully integrated solar cell and module pilot line by Q3 2026. 
May 15, 2026
India installed a record 15.3GW of solar capacity in the first quarter of 2026, according to new data from market research firm Mercom. 
May 15, 2026
Indian rooftop solar company Fujiyama Power has commissioned a 2GW solar module manufacturing facility in Ratlam, Madhya Pradesh. 

Upcoming Events

Solar Media Events
May 20, 2026
Porto, Portugal
Upcoming Webinars
May 27, 2026
9am BST / 10am CEST
Upcoming Webinars
May 27, 2026
9am BST / 10am CEST
Media Partners, Solar Media Events
June 2, 2026
Johannesburg, South Africa
Media Partners, Solar Media Events
June 3, 2026
National Exhibition and Convention Center (Shanghai)