Avantus sells California solar-plus-storage project with 500MW/2,000MWh BESS to AES

By Will Norman
LinkedIn
Twitter
Reddit
Facebook
Email

US utility AES Corporation has added the 2GW Bellefield solar-plus-storage project to its portfolio after acquiring it from the project developer, Avantus.

Located in Kern County, California, the Bellefield project is split into two phases, each with up to 500MW of solar and 500MW of 4-hour duration battery storage (2,000MWh). The two phases are expected to come online in 2025 and 2026 respectively.

Phase one has a 15-year power purchase agreement (PPA) in place with one of AES’ corporate customers, the company said. Some of the backing for the purchase was provided by Alberta Investment Management Corporation, an investor in AES with a 25% stake in its growth projects. It invests on behalf of various funds from the province of Alberta, with over US$150 billion of assets under management.

To read the full version of this story visit PV Tech.

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

Read Next

July 10, 2026
A 19.8MWh battery energy storage system (BESS) is to be added to an existing solar-plus-storage facility in the Republic of Palau, with Australian development finance backing the expansion of one of the Western Pacific’s flagship hybrid renewable energy projects.
July 9, 2026
Independent power producer (IPP) Opdenergy has closed a US$227 million financing for its operating renewable energy portfolio in Chile. 
July 8, 2026
Developer New Leaf Energy withdrew its application for a battery energy storage system (BESS) in Santa Cruz County, California, US, choosing to seek approval through the California Energy Commission (CEC).
Sponsored
July 8, 2026
Energy-storage.news spoke with Gerry Liu, GM of Hiconincs, at Intersolar Europe in Munich. We discussed the company’s residential energy offerings and its plans for the European market.
July 7, 2026
More than 3.8GWh of combined BESS capacity has either cleared or is undergoing federal environmental assessment under Australia’s EPBC Act.