Metro Railway, Kolkata, commissioned a Battery Energy Storage System (BESS) at central Metro station along the underground stretch on the Blue Line on Wednesday, to enhance energy efficiency and ensure passenger safety during power outages. According to officials, the system can haul rakes at 55 km/hr speed from mid-tunnel to the next station, and supply power to tunnel ventilation and environment control systems at underground stations. Metro officials are in talks with police to resolve the issue. 4 MWh BESS, consisting of 88 racks equipped with built-in fire suppression, is integrated with. KOLKATA, February 25, 2026 – Delta Electronics India, a leading provider of power management and smart green solutions, announced today the successful implementation of a 6.