IRVING, Texas — Feb. 15, 2022 — Vistra released the following statement:
Late on February 13, the early detection safety system activated in the 100-megawatt Phase II building at our Moss Landing Energy Storage Facility. As is our protocol at all of our facilities, we contacted off-site emergency response out of an abundance of caution. The building’s systems contained the event without the need for the outside assistance. There are no injuries to personnel. An investigation is underway to determine what caused the safety system to activate. While this is in its very early stages, what we know is the water-based suppression system released water that contacted some batteries. There is early evidence that water hoses leaked and that some batteries shorted, creating smoke in the building, similar to what we observed with the September incident at our 300-MW Phase I facility next door. The suppression system contained the event, and the 100-MW Phase II system is currently offline.
The Phase I (300 MW) facility was not affected by Sunday’s incident. We have been in the process of incrementally bringing the Phase I facility back online but have decided to pause restart activities while we assess the Phase II incident and will incorporate any learnings.