Colt Data Centre Services (Colt DCS), a global provider of AI-ready, hyperscale and large enterprise data centers, and RMZ, one of India’s largest privately owned real assets platform, have announced the commencement of construction of Mumbai 3, the third data center of Colt DCS in the city. This will be an AI-ready facility located at the operator’s Navi Mumbai Campus that will deliver 64 MW upon completion.
In a press release, Colt DCS said that Mumbai 3 is being developed as part of Colt DCS and RMZ’s joint venture announced in 2024, to invest US$ 1.7 billion in the Indian data center market. Ground preparation began in December 2025, and construction is now underway following the signing of the facility’s first hyperscale customer.
“The nature of data center demand is evolving rapidly, with customers requiring larger deployments, higher rack densities and infrastructure capable of supporting increasingly intensive AI workloads. Mumbai 3 is designed to address these needs, further strengthening our Navi Mumbai Campus as a scalable and future-ready digital infrastructure platform,” said Pratap Mane, Country Head, India, Colt DCS.
“The next wave of digital growth will be driven by infrastructure that brings together scale, resilience, and speed to market. At Mumbai 3, we are developing a future-ready campus designed to enable hyperscalers and neo-cloud providers to scale seamlessly as their capacity and computing needs evolve,” said Deepak Chhabria, President, RMZ Infrastructure.
Mumbai 3 will join existing data centers Mumbai 1 and Mumbai 2 at the Navi Mumbai Campus, which currently supports large enterprise and cloud workloads. The campus has the potential to deliver up to 148 MW of capacity at full development and, upon completion, Mumbai 3 will increase the site’s operational capacity to 86 MW.
Mumbai 3 has been designed to support AI workloads and high-density compute deployments, delivering 64 MW of secured contracted power, supported by a hybrid cooling architecture that combines traditional air cooling with direct liquid-to-chip cooling. The facility will also benefit from a 220kV GIS substation located on campus, providing high levels of resilience and scalability, alongside carrier-neutral connectivity with access to high-capacity fiber routes.
Sustainability and long-term community impact have been central considerations in the development of Mumbai 3. The facility will operate using 100% renewable energy and has been designed with a closed-loop cooling system, enabling near-zero wastewater from the cooling process.