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

September 21, 2026
Dilip Buildcon agrees to divest its stake in 10 SPVs developing a 1.36GWac solar portfolio in Madhya Pradesh.
September 21, 2026
Poland’s Energy Regulatory Office (URE) has scheduled a solar PV and onshore wind auction to be held on 9-10 November 2026.
September 21, 2026
Premier Energies has commissioned a 7GW n-type TOPCon G12R solar cell manufacturing plant in Naidupeta, Andhra Pradesh.
September 21, 2026
A Chinese satellite carrying prototype heterojunction solar modules produced by the leading PV manufacturer JA has been launched into Earth’s orbit.
Premium
September 18, 2026
GameChange’s CEO Phillip Vyhanek explores the key factors shaping the fixed-tilt versus tracker debate across global markets.
September 18, 2026
GameChange commissioned trackers at a 283MWp South Africa project, while Gonvarri secured a 389MWp Chile contract.

Upcoming Events

Solar Media Events
October 13, 2026
San Francisco Bay Area, USA
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