Storage

Latest expansion of Moss Landing BESS project completed
Latest expansion of Moss Landing BESS project completed
Vistra's Moss Landing battery storage site (Source: Vistra Energy).

Vistra Energy said the latest expansion of its Moss Landing Energy Storage Facility is complete.

The 350 MW/1,400 MWh Phase III expansion brings Moss Landing’s total capacity to 750 MW/3,000 MWh, the world’s biggest battery storage facility to date.

The Phase III expansion reached commercial operation on June 2 and will operate under a 15-year resource adequacy agreement with Pacific Gas and Electric Company (PG&E) beginning August 1.

Phase III is made up of 122 individual containers that combined house more than 110,000 battery modules.

Vistra’s Moss Landing energy storage facility is in Monterey County and is co-located on the site of Moss Landing Energy Storage Facility is co-located on the site of an existing natural gas-fired plant. As a result, Vistra has been able to reuse the site’s existing industrial zoning and infrastructure.

The site also has the potential for further growth. A potential fourth phase of the battery facility could expand the site’s capacity to 1,500 MW.

Vistra now owns the second-most energy storage capacity in the country. The company owns and operates renewable assets in California and Texas and has a pipeline of projects under development in Illinois and Texas.

Earlier this year Vistra announced plans to acquire Energy Harbor’s 4,000 MW nuclear fleet. The transaction, which is expected to close later in 2023, would bring Vistra’s total nuclear capacity to 6,400 MW.  

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