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

June 18, 2026
Developer Lightsource bp has reached financial close on the 171MWdc Glorit solar PV power plant, north of Auckland, New Zealand.
June 17, 2026
Solar PV solutions provider Nextpower has launched its redesigned NX Gemini two-in-portrait (2P) solar tracker.
June 17, 2026
Distributed solar developers including MCEC, Aligned Climate Capital and Catalyst Power have secured funding across US projects.
June 17, 2026
Independent power producer (IPP) Alluvial Power has reached commercial operation at its 150MWac project in Ford County, Kansas.
June 17, 2026
Navitas announced investment, Bondada secured EPC contract, SolarSquare raised US$53 million, Gujarat Inject and Waaree won module orders.
June 17, 2026
Foresight Group-backed developer NZ Clean Energy (NZCE) and Fonterra have signed a long-term virtual power purchase agreement (PPA) under which the dairy cooperative will purchase electricity generated by NZCE's Darfield solar-plus-storage project in Canterbury.

Upcoming Events

Media Partners, Solar Media Events
June 30, 2026
Sacramento, California
Media Partners, Solar Media Events
August 25, 2026
São Paulo, Brazil
Media Partners, Solar Media Events
September 1, 2026
Mexico City, Mexico
Solar Media Events
September 9, 2026
Schaumburg, Illinois
Media Partners, Solar Media Events
September 9, 2026