The moss landing project has been expanded through several iterations. It started construction back in 2019 which is near ancient in terms of how fast the BESS industry has evolved.

Utilizing NMC cells which were popular at the time instead of the more stable LFP variety making up the vast majority of storage projects today.

https://en.wikipedia.org/wiki/Moss_Landing_Power_Plant#Batte...

LG Energy Solution supplied the lithium-ion battery racks/modules (TR1300 using LG JH4 NMC cells) for Vistra’s initial 300 MW/1,200 MWh Moss Landing system; Fluence was the system integrator/GC.