How much does the phase 2 of Chennai — Phase 2 cost?
Chennai Metro Phase 2 is the extension of the Chennai Metro in Tamil Nadu, India, of three corridors, Line 3 (Madhavaram to SIPCOT), Line 4 (Light House to Poonamallee) and Line 5 (Madhavaram to Sholinganallur), totalling 116 to 119 km with some 125 to 128 stations, of which the 14.6 km Poonamallee–Vadapalani stretch was inaugurated on 11 October 2026, bringing the operating Phase 2 network to 68 km. The Metro Rail Guy, updated in January 2026, says the 2019 estimate of 69,180 crore rupees was revised down to 61,843 crore by reducing station sizes.
Published project estimate
INR 618.43 billion
Approximately $7.1 billion
Cost basis: 2026
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Cost evidence
Basis of the published figure
Published project estimate2026
Project metrics
Key dimensions
- Total lengthThe Metro Rail Guy
- 116.1 km
Project record
Opened or launched
The Hindu via Superprep11 October 2026