Electricity and power generation company Vistra has completed the 350 MW/1,400 MWh expansion of its Moss Landing energy storage facility. It said on Tuesday the phase III expansion brings total capacity to 750 MW/3,000 MWh, the largest of its kind in the world.
The expansion began operations on 2 June and is supplying electricity to the grid in California under a 15-year adequacy agreement with Pacific Gas and Electric Company beginning 1 August.
Jim Burke, Vistra president and CEO, said: “Continued investment in energy storage, like our Moss Landing site, allows us to harness and store a substantial and growing amount of power from intermittent renewables and then deliver that electricity when customers need it most.”
The phase III expansion comprises 122 individual containers with more than 110,000 battery modules. It was completed on schedule and within budget in 16 months.
Moss Landing Energy Storage Facility is co-located on Vistra’s existing natural gas-fuelled Moss Landing Power Plant in Monterey County. Vistra owns and operates two solar facilities, one solar-plus-storage facility, and a 260 MW storage facility, all in Texas.
Its pipeline of projects includes four solar installations and 10 other storage and solar-plus-storage facilities, all in various stages of development in Illinois and Texas.
Both of the first two phases suffered overheating incidents last year.