13: Updates to NFPA 110 2025 / Points of Failure - Design, Execution of Design, Commissioning of Design 25: Emergency Power Supply Systems (EPSS) are critical to maintaining life safety and operational continuity in healthcare facilities and other mission-critical occupancies. While electrical riser diagrams often communicate the major components of an EPSS, many design and coordination issues occur beyond the riser and can significantly affect system reliability, compliance, testing, maintenance, and long-term operation. This session explores common oversights during the planning, design, and implementation of EPSS infrastructure. Topics include emergency power generation, system distribution, transfer and switching arrangements, load management, monitoring and control systems, and operational considerations that are frequently overlooked during design. Through real-world examples and lessons learned from completed projects, attendees will gain insight into how design decisions can impact facility operations, regulatory compliance, system resilience, and emergency preparedness. The session will provide practical guidance for engineers, architects, facility managers, contractors, and healthcare owners seeking to improve the reliability, maintainability, and performance of emergency power systems in complex facilities.