As the energy landscape evolves, distributed energy storage system (DESS) have emerged as a pivotal solution for enhancing grid stability. DESS enhances grid resilience, 2. employs digital monitoring for optimized energy use, 3. ETIP SNET Working Group 2 members, Pedro Rodriguez Cortes, Franco Di Persio, Julie Horn, Pio Alessandro, Vito Ponzo, Lorena Elorza, Alexandre Lucas, and Mohamed Bahloul Lombardi, have developed a publication in the context of CIGRE 2026, focusing on the role of District Energy Storage Systems. Distributed generation, also distributed energy, on-site generation (OSG), or district/decentralized energy, is electrical generation and storage performed by a variety of small, grid -connected or distribution system-connected devices referred to as distributed energy resources (DER).