STN: Metro Railway Kolkata has invited bids for a major power system upgrade project worth ₹345.76 crore. The project focuses on modernizing traction substations and improving the overall power supply network across its system.
This step is part of a planned infrastructure upgrade. The aim is to replace old equipment and improve operational reliability. The work will be carried out under Phase 1 of the project.
The tender notice, numbered ELM_131R_PSWORK_Dt19-2-26, was issued on 20 February 2026. The authority has adopted an open bidding process. It will follow a two-packet system. The selected contractor must complete the work within 36 months from the date of commencement.
Scope of Work Under Metro Railway Kolkata Project
The main focus of the project is the replacement and upgradation of equipment at 750V DC traction substations. This includes work related to the third rail system and associated power cables. These components play a key role in supplying electricity to metro trains.
The project also includes conversion of existing 11 kV auxiliary substations into 33 kV auxiliary substations. This conversion will increase capacity and improve the stability of the power supply system.
Officials expect that the upgrade will reduce technical faults. It will also help manage higher power demand in the future. The shift to a 33 kV system is planned to support long-term operations.
Tender Details Announced by Metro Railway Kolkata
Metro Railway Kolkata has fixed specific conditions for bidders. The Earnest Money Deposit (EMD) has been set at ₹1 crore. The cost of the tender document is nil.
The bid submission window will open on 6 March 2026. It will close on 20 March 2026 at 11:00 hours. Interested bidders must submit their proposals within this timeline.
A pre-bid meeting is scheduled for 27 February 2026 at 12:00 hours. This meeting will allow bidders to seek clarifications. The bid validity period has been set at 90 days from the closing date.
The Chief Electrical Engineer/HQ has invited the tender on behalf of the organisation.
Why This Upgrade Matters for Metro Railway Kolkata
Metro Railway Kolkata operates India’s first metro rail network. Over the years, several parts of its electrical infrastructure have aged. Regular maintenance continues. However, system upgrades are necessary to ensure stable operations.
The traction substations supply power directly to trains. Any disruption in this system can affect train movement. By replacing old equipment, the authority aims to reduce breakdown risks.
The conversion from 11 kV to 33 kV auxiliary substations will improve load handling capacity. A higher voltage system can distribute power more efficiently. It can also reduce transmission losses.
This project is expected to improve service reliability. It may also support network expansion in the future. Strong electrical infrastructure is essential for daily metro operations.
Metro Railway Kolkata has taken this step to strengthen its core systems. The project reflects a long-term plan to maintain safe and consistent metro services.
Implementation Timeline
The contractor must complete the work within 36 months. The timeline will begin from the official date of commencement. The phased execution will ensure that regular metro services continue during the upgrade process.
Authorities are likely to monitor the progress closely. Safety standards and operational continuity will remain priorities during execution.
Conclusion
The ₹345.76 crore tender marks an important infrastructure move for Metro Railway Kolkata. The project focuses on traction substation upgrades and auxiliary substation conversion. It aims to improve reliability, capacity, and operational stability.
By modernising its power supply systems, Metro Railway Kolkata is preparing its network for future demand. The upgrade will help maintain smooth train services while strengthening the system for long-term use.
Frequently Asked Questions (FAQ)
A: A traction substation converts and supplies electrical power required to run metro trains. It feeds electricity to the third rail system.
A: The third rail supplies power directly to metro trains. It runs alongside the tracks and provides continuous electricity.
A: A 33 kV system carries higher voltage than an 11 kV system. It supports larger loads and reduces transmission losses.
A: In a two-packet system, bidders submit technical and financial proposals separately. Authorities evaluate technical bids first. Financial bids open later for qualified bidders.
A: EMD is a security deposit submitted by bidders. It shows their commitment to the project. The amount is refundable as per tender rules.
A: Upgrades improve reliability and reduce breakdowns. They also help systems handle future passenger growth and power demand.
