This article breaks down the critical fire protection acceptance standards for outdoor energy storage cabinets, offering actionable insights for installers, project managers, and safety inspectors. This will change with the 2027 IFC, which will follow th. . Battery Energy Storage Systems, or BESS, help stabilize electrical grids by providing steady power flow despite fluctuations from inconsistent generation of renewable energy sources and other disruptions. NFPA 855 is a standard that addresses the safety of energy storage systems with a particular focus on fire protection and prevention. The “five-layer fire fighting system” concept reflects how manufacturers integrate safety at multiple levels rather than relying on a single barrier. 1、Heat/Smoke/Gas Detection. .