In an exchange filing, the company said it will invest $63 million in the MIST cable system connecting Mumbai and Singapore during FY27 and $89 million in Project CS, a new subsea cable linking Chennai and Singapore, from FY27 to FY31. Both projects will be funded through internal accruals.
The company said the investments include acquiring significant fibre capacity and will strengthen connectivity between Mumbai, Chennai and Singapore, supporting AI, cloud and enterprise workloads across Asia and global markets.
Capacity expansion across the subsea network
Tata Communications currently has an installed subsea network capacity of around 270 Tbps, of which nearly 172 Tbps is lit.
The MIST cable system will add about 20 Tbps of capacity, with an expected Ready for Service (RFS) date in Q4 FY27 and an initial lit capacity of 2 Tbps. Project CS will add another 78 Tbps, with an expected RFS in Q3 FY31 and an initial lit capacity of around 4 Tbps.
The company said both systems will be upgraded further over time.
The new cable systems will connect with Tata Communications’ terrestrial fibre network in India, providing connectivity to more than 100 data centres across the country and integrating with its global Tata Global Network (TGN).
Genius Wong, Executive Vice President – Core and Next-Gen Connectivity Services and Chief Technology Officer at Tata Communications, said, “As global demand for digital and AI-driven services continues to accelerate, these investments reinforce our commitment to building future-ready digital infrastructure at scale.”
He added, “By combining subsea capacity enhancement with both short-term and long-term strategic investments, we are strengthening the reliability, scalability and performance of connectivity solutions for our customers across one of the world’s busiest digital corridors.”
The company said the expanded infrastructure will enhance its AI-ready connectivity offerings, including data centre and multi-cloud connectivity solutions, enabling enterprises to activate network capacity on demand.
Last year, Tata Communications integrated the TGN IA2 submarine cable into its network to improve latency, increase redundancy and expand network diversity across Asia.
Shares of the company were trading 0.68% up on Tuesday at ₹1,979.90. The stock has gained about 17% over the last one year.
