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

August 27, 2026
A roundup of large-scale battery energy storage system (BESS) projects being financed, acquired or contracted in Poland, Lithuania, Latvia, Finland and Romania. 
August 27, 2026
Solar-plus-storage project, claimed as the first of its kind in Africa to deliver 24/7 renewable electricity, has come online at a copper mine in the Democratic Republic of the Congo (DRC).
August 26, 2026
US independent power producers (IPPs) Swift Current Energy and Avantus have secured financing for their pipelines and projects, respectively.
August 26, 2026
DC-coupled solar-plus-storage projects can reduce the time needed for grid connection approval compared with AC-coupled designs.
August 24, 2026
Scott Murtishaw, executive director at the California Energy Storage Alliance, discusses local opposition, safety misconceptions, and why the state’s containerised projects have proven safe.