A COASTAL DEVELOPMENT PERMIT and SITE DEVELOPMENT PERMIT for the development of an energy storage facilities and associated infrastructure and composed of lithium-ion batteries installed in racks, inverters, medium voltage (MV) transformers, switchgear, collector substation, and other associated equipment to interconnect into the San Diego Gas & Electric (SDG&E) Silvergate Substation located approximately 0.35 mile west of the project site at the intersection of Sampson Street and Harbor Drive. The batteries would be installed either in containers or purpose-built enclosures. The containers or enclosures would have battery storage racks, with relay and communications systems for automated monitoring and managing of the batteries to ensure design performance. A Battery Management System would be provided to control the charging/discharging of the batteries along with temperature monitoring and control of the individual battery cell temperature with an integrated cooling system. Batteries would operate with direct current (DC) electricity that must be converted to AC for compatibility with the existing electric grid. Power inverters to convert between alternating current (AC) and DC, along with transformers to step up the voltage, would be included. The batteries would be connected to the SDG&E electric transmission system via a generation interconnection line (gen-tie) that would be constructed between the Peregrine Project site and the existing SDG&E Silvergate Substation. The project would provide a critical reliability service to the regional electric grid by receiving energy (charging) from the SDG&E electric transmission system, storing electric energy on site, and then later delivering electric energy (discharging) back to the Silvergate Substation.