Guide · Updated
AI data centres in Tamil Nadu
Chennai is one of India's biggest data centre markets: Cushman & Wakefield counted 214 MW running there in the first half of 2026, with 368 MW more coming. AI computing is now arriving, from a 20 MW Vultr GPU cluster to L&T's AI factory for Together AI. The state plans its own GPU cluster, and startups can get help with GPU bills today.
How much capacity Chennai has
Cushman & Wakefield counted 214 MW of operational data centre capacity in Chennai in the first half of 2026, and 368 MW of upcoming supply. (Cushman & Wakefield)
JLL counts a little differently, so always name the report when you quote a figure. JLL says Chennai supplied half of the 85 MW added across India in the first half of 2026. (JLL, India data centre mid-year report 2026)
Two years earlier, JLL put Chennai at 108 MW in June 2024 and expected 134 MW more by 2026, with another 130 MW planned for 2027-28. (JLL)
Where AI computing is being built
Vultr announced a 20 MW AI cluster in Chennai using AMD Instinct MI355X chips in October 2026. It did not say how many chips or which data centre will host them. (CXOToday (Vultr and AMD release))
L&T's Vyoma.AI won an order from US firm Together AI to build capacity for 10,000 NVIDIA B300 chips at its Chennai campus. L&T describes the campus as gigawatt-scale, with a first phase designed for 250 MW, and gave no date for it to go live. (Larsen & Toubro)
Sify's Chennai 02 campus in Siruseri opened in April 2025, is planned to reach 130 MW, and is certified by NVIDIA for liquid cooling at up to 200 kW per rack. (Evertiq, Sify release (via Nasdaq))
CapitaLand's Chennai 01 in Ambattur was inaugurated by Chief Minister Vijay on 15 Oct 2026 and is due to be completed by the end of 2026. It is planned at 53 MW of gross power (34 MW for IT) with about Rs 1,940 crore of investment, and CapitaLand describes it as AI-ready. (DT Next, DatacenterDynamics, DQ India, W.Media)
Data centre projects we track
Each row comes from our own records and names its source. Capacity is given as the source reports it, so figures are not always comparable.
| Operator and place | Capacity, as reported | Status | Source |
|---|---|---|---|
| AdaniConneXChennai | 17 MW IT load in phase 1, scaling to 33 MW | Operational | DT Next |
| CapitaLandAmbattur, Chennai | 46 MW planned (LiveChennai); CapitaLand's page lists 54 MW | Operational | DT Next |
| CtrlSAmbattur Industrial Estate, Chennai | 72 MW total IT load across two data centre buildings | Operational | Voice&Data |
| Digital Connexion (Brookfield, Reliance and Digital Realty)Ambattur, Chennai | MAA10 first phase of 20 MW IT load on a 100 MW-capable campus | Operational | W.Media |
| NTTAmbattur, Chennai | 34.8 MW at full build-out; first building of 17.4 MW live | Operational | DatacenterDynamics |
| STT GDC IndiaAmbattur, Chennai | 40 MW operational | Operational | The Machine Maker |
| STT GDC IndiaSiruseri, Chennai | Planned as a 45 MW facility; first phase of 7.2 MW operational | Operational | The Machine Maker |
| Techno Digital (Techno Electric & Engineering)SIPCOT IT Park, Siruseri, Chennai | 36 MW hyperscale data centre | Operational | Data Centre Magazine |
| Iron MountainAmbattur Industrial Estate, Chennai | CHN-1 rated at 23.2 MW; campus has 42 MW of IT power for phased development; phased delivery from Q3 2026 | Under construction | Iron Mountain |
| Larsen & Toubro (L&T)Kancheepuram district | Rs 15,000 crore data centre expansion project; capacity not stated | Announced | NBM&CW |
| Light House Green Sara CentreThoothukudi | Rs 10,000 crore hyperscale data centre; capacity not stated | Announced | PropNewsTime |
The Sovereign AI Park
Tamil Nadu and Sarvam AI signed an MoU on 13 Jan 2026 for a Sovereign AI Park in Chennai, with an initial Rs 10,000 crore and over 1,000 jobs expected. It is planned to hold high-performance computing, secure data systems, model research labs and an Institute for AI in Governance. (Business Today)
MediaNama reports that a plot near IIT Madras Research Park has been identified and that no timeline has been made public; it attributes the Rs 10,000 crore and 1,000 jobs figures to press reports. No megawatt or GPU figure has been given. (MediaNama)
Why Chennai
JLL points to Chennai's submarine cable landings, reliable power, Tamil Nadu's renewable energy commitment and low construction costs. (JLL)
W.Media reported five cable landing stations in Chennai with three more planned, and JLL notes a new Bharti Airtel cable that adds 220 Tbps when it goes live in 2026. (W.Media, JLL, Chennai data centre market H1 2025)
What the state offers
The Tamil Nadu Data Centre Policy 2021 covered data centres set up from 1 Apr 2021 to 31 Mar 2026. It gave a full electricity tax subsidy for five years, stamp duty relief on land from state agencies, and dual power supply for data centres of 50 MW or more. (ELCOT, W.Media)
That policy's period ended on 31 Mar 2026, and we have not found a successor policy yet. We will update this page when one is announced.
For startups, the Tamil Nadu Startup Data Server Services Scheme gives up to Rs 5 lakh a year in data centre services; the state says 75 startups have received Rs 1.80 crore under it. (Deccan Chronicle)
In August 2026 the state announced its own Rs 10 crore GPU cluster for entrepreneurs, and the 2026-27 Policy Note proposes Tamil Nadu AI Vision, a government company that would sell computing for a fee. (YourStory (PTI), DT Next)
The government's own State Data Centre runs in two phases; the second holds 135 racks. (IT and Digital Services Department, Policy Note 2025-26)
- IndiaAI Compute Portal (GPU access)Central · Compute · Open
- State GPU computing clusterTamil Nadu · Compute · Announced, not yet open
- Tamil Nadu Startup Data Server Services SchemeTamil Nadu · Compute · RunningUp to Rs 5 lakh per startup per year, for up to 3 years
Latest infrastructure news
Infrastructure stories from The TN AI Brief, newest first.
- Cloud company Vultr will put a 20 MW cluster of AMD MI355X GPUs in Chennai, which it calls India's largest AMD Instinct deployment.21 Oct 2026 · Infrastructure · Chennai · Digital Terminal
- Chief Minister Vijay and Singapore's Deputy PM Gan Kim Yong opened CapitaLand's first data centre in Chennai, in Ambattur.15 Oct 2026 · Infrastructure · Chennai · DT Next
- Suzlon plans three AI-enabled wind blade factories, including a Rs 200 crore plant in Tamil Nadu, due to run in 2027.Oct 2026 · Infrastructure · Free Press Journal
- A Rs 100 crore semiconductor training and prototyping centre near IIT Madras Research Park is close to being formalised, with TIDCO joining.4 Sep 2026 · Infrastructure · Chennai · DT Next
- The Vetri Tamil Nadu Investment Conclave signs 97 MoUs worth Rs 67,542 crore, with data centres taking over 28%.13 Aug 2026 · Infrastructure · The Week
Questions people ask
How much data centre capacity does Chennai have?
Cushman & Wakefield counted 214 MW of operational capacity in Chennai in the first half of 2026, with 368 MW of upcoming supply. Other consultants count differently, so always check which report a figure comes from.
Is there GPU cloud in Chennai?
Yes, and more is coming. Vultr announced a 20 MW AMD GPU cluster in Chennai in October 2026, L&T's Vyoma.AI is building capacity for 10,000 NVIDIA B300 chips for Together AI there, and Sify's Siruseri campus is NVIDIA-certified for liquid-cooled AI racks.
What is the Sovereign AI Park in Chennai?
A park agreed in an MoU between Tamil Nadu and Sarvam AI on 13 Jan 2026, with an initial Rs 10,000 crore and over 1,000 jobs expected. It is planned to hold computing, data systems, research labs and an Institute for AI in Governance. No timeline has been published.
Can a startup in Tamil Nadu get help paying for computing?
Yes. The Tamil Nadu Startup Data Server Services Scheme gives up to Rs 5 lakh a year in data centre services to startups registered with StartupTN and iTNT Hub. A state GPU cluster was announced in August 2026 but is not open yet.
Sources
Every fact on this page was checked against these pages, most recently on 26 Oct 2026. Lists marked as live come from our own records, each of which names its source.
- Cushman & Wakefield
- JLL, India data centre mid-year report 2026
- JLL
- CXOToday (Vultr and AMD release)
- Larsen & Toubro
- Evertiq
- Sify release (via Nasdaq)
- DT Next
- DatacenterDynamics
- DQ India
- W.Media
- Business Today
- MediaNama
- JLL, Chennai data centre market H1 2025
- ELCOT
- W.Media
- Deccan Chronicle
- YourStory (PTI)
- DT Next
- IT and Digital Services Department, Policy Note 2025-26
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Cite this page
theTN.ai, "AI data centres in Tamil Nadu", updated 26 Oct 2026. https://thetn.ai/ai-data-centres-tamil-nadu/
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