Moss Landing Energy Storage Facility
Vistra is expanding the Moss Landing Energy Storage Facility by building an additional 350 MW of storage.
Once Phase III is complete, it will bring the facility’s total capacity to 750 MW/3,000 MWh, making it the largest of its kind in the world. Our enormous battery system is also on the site of the existing Moss Landing Power Plant in Monterey County, a site that’s been providing electricity to Californians since 1950. With additional phases, this project could eventually reach 1,500 MW—enough to power approximately 1.125 million homes across California with emission-free electricity.
Location (county):
Completion date:
Power capacity (in MW and MWh):
Monterey County
Summer 2023 (Phase III)
750 MW/3,000 MWh
8,694
$1.06 billion
Location (county):
Monterey County
Completion date:
Summer 2023 (Phase III)
Power capacity (in MW and MWh):
750 MW/3,000 MWh
8,694
$1.06 billion
Project milestones
Here is what is currently underway in Moss Landing.
2020
Phase I: Moss Landing Energy Storage Facility connected to the power grid and began operating on Dec. 11, 2020, with 300 MW/1,200 MWh.
2021
Phase II: In 2021, Vistra expanded the Moss Landing Energy Storage Facility by 100 MW. The expansion increased the facility’s total capacity to 400 MW/1,600 MWh, making it the largest battery energy storage system (BESS) of its kind in the world. The facility is currently storing power and releasing it to California’s grid when it is needed most.
2022
Phase III: In January 2022, Vistra announced plans to further expand Moss Landing Energy Storage Facility. The company has entered into a 15-year resource adequacy agreement with PG&E for a new 350 MW/1,400 MWh battery system. This would complement the existing 400 MW/1,600 MWh of energy storage capacity already at the site.