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The work to be acquired under this solicitation is for the Design-Build Construction Contract to install 10 MW of battery energy storage systems (BESSs) that will enhance energy security at various locations at Marine Corps Air Ground Combat Center (MCAGCC) in Twentynine Palms, California. The BESSs shall be capable of powering numerous mission critical and support facilities at the distribution level during a utility grid outage. There are approximately 54 BESSs (each of which will include high energy density batteries, bidirectional inverters, and the associated controls) that will be standalone modular packaged units connected to one or more solar photovoltaic (PV) arrays. The BESSs will be connected to the solar PV systems for clean energy charging as well as to the Project P-1238 Construction of Grid Stability & Resiliency 10 MW Battery Energy Storage, Various Buildings at Marine Corps Air Ground Combat Center, Twentynine Palms, California Apr 15, 2022 12:03:02 AM GMT 1 installation's electric distribution system for utility power or on-site cogeneration system charging. The BESSs will be tied into the installation's microgrid (being built via project P-1232) so the battery energy can be discharged to level solar PV variability and stabilize the grid (electrical distribution system reliability), provide power to support black-start and islanding events (energy resilience), and reduce energy costs during peak demand/energy pricing periods (energy management/efficiency). Also, the BESS controls will be accredited to ensure the energy systems remain cyber secure. The goal for this project is to integrate BESSs into an electrical distribution microgrid on MCAGCC. The project installs and fully permits new BESSs capable of parallel operation, each located in proximity to existing PV systems.