Kolkata Under Water Metro

KOLKATA (Metro Rail News): Metro Railway Kolkata has invited bids for a major infrastructure modernisation project valued at ₹345.76 crore for the replacement and upgradation of equipment at 750V DC traction substations, including third rail and power cables, along with upgradation of 11 KV auxiliary substations to 33 KV auxiliary substations in Phase 1. 

The tender, issued on February 20, 2026, follows an open bidding system under a two-packet system and requires completion within 36 months from the commencement date. 

Replacement and Upgradation of Equipment of 750 V DC Traction Substation, including Third Rail, Power Cable with Upgradation of 11 KV Auxiliary Substation to 33 KV Auxiliary Substation(Phase 1).

The comprehensive modernisation project represents a critical infrastructure upgrade for Kolkata Metro, India’s oldest metro system. The replacement of ageing electrical infrastructure with modern 33 kV systems will enhance power supply reliability, operational efficiency, and safety across the network.

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