2 NFPA 855 includes specificaons for setbacks and buffering between the energy storage system and property lines, buildings, and other potenal exposures. Pumped storage plants convert potential energy to electrical energy, or, electrical energy to potential energy. Kalayaan Pumped Storage is a 796MW hydro. The following document summarizes safety and siting recommendations for large battery energy storage systems (BESS), defined as 600 kWh and higher, as provided by the New York State Energy Research and Development Authority (NYSERDA), the Energy Storage Association (ESA), and DNV GL, a consulting. • For solid protective walls, the spacing should be 4 meters for heat dissipation surfaces and 0. 5 meters for non-dissipating short sides. 3 NFPA. Systems (BESS), in their respective jurisdiction. For outdoor installations classified as “near exposures,” the standard requires a minimum separation distance of 10 ft (3 m) from the following: In commercial.