GE Battery Energy Storage System. In total, SERC is proposing to provide 98 MW (nominal) of EGT capacity.

California new Stanton Energy Reliability Center

The facility, the Stanton Energy Reliability Center (SERC), will consist of two General Electric (GE) LM6000-based EGTs. EGT refers to the LM6000 PC Hybrid EGT jointly developed by General Electric International, Inc. (GE) and Wellhead Power Solutions. The EGT combines a combustion gas turbine with an integrated battery storage component operated by a proprietary software system.

The two GE LM6000 PC units will be natural gas-fired, simple-cycle combustion turbine, a clutch to provide operational flexibility as a synchronous condenser, and an integrated 10-megawatt (MW) GE Battery Energy Storage System. In total, SERC is proposing to provide 98 MW (nominal) of EGT capacity.

The facility will be located at 10711 Dale Avenue, Stanton, Orange County, California.

https://ww2.energy.ca.gov/sitingcases/stanton/

Observation:

".... as a synchronous condenser, and an integrated 10-megawatt (MW) GE Battery Energy Storage System."

That is not an electrical storage batteries but rather VAR's support, low voltage ride through, power factor correction and frequency correction.

It is a misleading nomenclature....

Here is the evidence for the readers benefit:  Verbatim excerpts: "

...nor batteries can provide on their own."

a broad array of unique reliability benefits that neither turbines nor batteries can provide on their own

efficient energy generation with state-of-the-art energy storage technology to meet the need for new local capacity and reliability services

Evidence From the Media:

The Stanton Energy Reliability Center (SERC) is a state-of-the-art hybrid energy storage system that will consist of two General Electric (GE) LM6000 based EGT®s. EGT® refers to the Hybrid technology jointly developed by General Electric International, Inc. (GE) and Wellhead Power Solutions.

The EGT® combines a turbine with an integrated battery storage system operated by a proprietary software system. In total, SERC will provide 98 MW (nominal) of hybrid energy storage capacity.  

This technology provides a broad array of unique reliability benefits that neither turbines nor batteries can provide on their own.

The project will be one of the first green-field commercial applications of the EGT® technology. Using this technology, SERC is able to combine dispatchable, operationally flexible, and efficient energy generation with state-of-the-art energy storage technology to meet the need for new local capacity and reliability services specifically in the West Los Angeles (LA) Basin local reliability area of Southern California Edison’s (SCE’s) service territory.

http://wpowerllc.com/wordpress1/serc-about/