The Chennai Metro Rail’s ambitious plan to expand its network with a driverless train system is taking a significant step forward. The Poonamallee depot, a crucial component of the planned phase-2 extension line to Parandur airport, has reached a major milestone with the inauguration of its substation. This substation, capable of supplying 110KV power, will play a critical role in supporting the daily operations of the depot.
Chennai Metro Rail Limited (CMRL) officials have stated that the depot is on track for completion within the next 6-7 months, with the first stretch of the corridor-4 line, connecting Porur and Poonamallee Bypass, slated to begin operations by the end of 2025. This line, a key part of the 116.1km phase-2 extension, will be serviced by the Poonamallee depot.
Construction of the depot is progressing at a rapid pace, with 82% of the work already completed. This includes the construction of the stabling shed, where trains will be parked, and the test track, where trains will undergo trials before being put into service. Currently, the focus is on completing the systems and track work.
The Poonamallee depot will be responsible for servicing all trains operating on the 26.1km corridor-4, which stretches from Lighthouse to Poonamallee Bypass and will eventually extend to Parandur airport. It is designed to accommodate up to 56 six-car trains.
In addition to the Poonamallee depot, CMRL is also constructing another depot at Madhavaram Milk Colony, which will service trains on corridors 3 and 5. This depot will be responsible for major overhauls. A third depot is being planned at Nookampalayam near Sholinganallur.
The completion of the Poonamallee depot is a significant step towards realizing the vision of a modern and efficient metro rail system in Chennai. This driverless train system will not only enhance connectivity but also contribute to a more sustainable and environmentally friendly mode of transportation in the city.
