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Mumbai (Metro Rail News): On 23 July, Leena Powertech Engineers Pvt. Ltd. emerged as the lowest bidder for the 25 Kv AC OHE electrification contract of Line-7A and Line 9 of the Mumbai Metro project.
Mumbai Metro’s Line 7A and Line 9
The construction is underway for both Line 7A and Line 9. Both lines will serve as the extensions of existing operational Line 7 which covers a total distance of 16.5 km from Gundavali to Dahisar East. The details of both Lines 7A and 9 are below:
Line 7A:
This line will extend Line 7 in the southward direction. This extension runs 3.17 km from Gundavali to CSIA. The electrification contractor will equip this line with rigid OHE (ROCS).
Line 9:
This line is the northern extension of Line 7. Line 9 spans 11.38 km from Mira Bhayandar to Dahisar East. The electrification contractor will install flexible OHE (FOCS) on this line.
Bidding Process
In June 2023 Mumbai Metropolitan Region Development Authority (MMRDA) called for bids to carry out the electrification work on Line 7A and Line 9 under Package CA-176.
MMRDA’s Expected Cost: 108.01 Crore
Deadline: 30 months
In December 2023, MMRDA opened technical bids and revealed 4 bidders for Package CA-176. During the technical evaluation, the bids placed by BNC Power Projects Ltd. and Texmaco Rail and Engineering Ltd. didn’t meet the terms of the tender; subsequently, their bids were disqualified.
Financial Bids
| Firm | Bid price |
| Leena | 122.09 crore |
| Siemens | 185.35 crore |
Scope of work
The appointed contractor under this electrification contract will be responsible for the design, manufacture, supply, installation, testing, and commissioning of various electrical systems for Metro Line 9 and Line 7A of the Mumbai Metro project.
Key responsibilities include:
- 33 kV and 25 kV Cabling Work
- Cabling work for efficient power transmission.
- 25 kV Overhead Equipment (OHE) System
- Installation of the 25 kV OHE system to power metro trains.
- Switching Station
- Establishing a switching station for managing electrical supply.
- 33 kV Auxiliary Power Distribution System
- Designing and installing the 33 kV auxiliary power system.
- 33/0.415 kV Auxiliary Substation (ASS)
- Setting up substations to step down voltage from 33 kV to 0.415 kV.
- Supervisory Control and Data Acquisition (SCADA) System
- Implementing a SCADA system to monitor and control electrical systems.
Update on Line 7A and Line 9
Line 7A: Currently, Tunneling work is under on this corridor.
Line 9: MMRDA is pursuing superstructure works to facilitate the construction of a Viaduct on corridor 9.
