Kolkata Metro is undergoing a significant upgrade. The existing steel third rail used for power supply, which leads to high electricity consumption, will be replaced with aluminum. This will significantly reduce electricity consumption by 84% and carbon emissions by 50,000 tons annually. The project is expected to be completed in two...
more...

years and will bring Kolkata Metro on par with international standards like Singapore, London, Moscow, Berlin, Munich, and Istanbul, all of which have already adopted aluminum third rails. The upgrade work has begun at Noapara station on the Blue Line, the oldest line in the Kolkata Metro. This initiative is aimed at improving service efficiency and reducing operational costs.