Sify's Chennai 02 campus at SIPCOT Siruseri is the most aggressively AI-specified facility in this registry. Its design runs to 130+ MW across three towers; 25.92 MW was built as of June 2025. It supports up to 200 kW per rack on liquid cooling and 8–25 kW on air, holds India's first NVIDIA DGX-Ready certification for liquid cooling, and contains the only on-site open cable landing station in India — 2 petabytes per second of international capacity inside the fence. Tower 1 alone cost ₹1,882 crore.
1At a glance
Record ID
PRJ-028 — Gridvik India Data Centre Registry
Project
Sify Chennai 02 — marketed as South India's largest AI-ready data-centre campus
Operator
Sify Infinit Spaces Limited, the data-centre subsidiary of Sify Technologies (NASDAQ: SIFY)
Location
SIPCOT IT Park, Siruseri, Chengalpattu district, Tamil Nadu
State
Tamil Nadu
Record type
campus_aggregate
Status
Live and expanding. Tower 1 inaugurated 17 April 2025; two further towers planned
Capacity
130+ MW eventual IT capacity, three towers. 25.92 MW built as of 30 June 2025
Rack density
Up to 200 kW per rack with liquid cooling · 8–25 kW per rack with air cooling · certification basis stated as 130 kW per rack
Certification
NVIDIA DGX-Ready Data Center programme, certified for liquid cooling — Sify was the first provider in India to hold this, at Rabale in 2024, extended to Chennai and Noida in May 2025. Rated 3. IGBC Platinum
Connectivity
The only data centre in India with an on-site open cable landing station, with about 2 petabytes per second of capacity
Gridvik tier
A — the most AI-specified campus in the country. Live, expanding, and specified for densities no other Indian facility publishes
2Capacity reconciliation
Three figures, and only one of them describes a building that exists.
Figure 1Sify Chennai 02. The 130+ MW is the three-tower campus design. 25.92 MW is what Tower 1 actually carries as of June 2025. The 78 MW figure in circulation does not correspond to either.
What each figure measures
Figure
Date
MW
Scope and source
130+ MW
The three-tower campus design, described as eventual capacity to be delivered over about five years
Design
25.92 MW
Built IT power as of 30 June 2025 — Tower 1
Operational
78 MW
A figure carried in the registry and in some operator material. It corresponds neither to Tower 1 nor to the campus total
Unexplained
26 MW
The figure Sify's group CFO gave at inauguration as present capacity, with the balance to be added over five years
Corroborates
Gridvik read — 25.92 MW is the number that exists
At inauguration in April 2025, Sify's group chief financial officer said the facility had 26 MW at present with the ability to scale over the next five years. The operator page states 25.92 MW built as of 30 June 2025. Those two agree. The 130+ MW is the design.
The 78 MW figure that also circulates cannot be reconciled to either a tower or the campus. It may describe an intermediate design stage, or a third-party count of something else. Gridvik publishes it as unexplained rather than adopting it.
Operational: 25.92 MW. Pipeline: about 104 MW. That is the split that belongs in any capacity total.
3The cable landing station — the real differentiator
Why this matters more than the megawatts
The Siruseri campus contains an on-site open cable landing station — Sify states it is the only data centre in India with one, inaugurated alongside the campus by the chief minister.
An open landing station means submarine cables terminate inside the data-centre campus rather than at a carrier-owned facility elsewhere. For a latency-sensitive AI or financial workload, the difference between a subsea cable arriving in your building and arriving 30 km away is the difference between competitive and not.
With about 2 petabytes per second of capacity, this places Siruseri among the region's highest-capacity subsea gateways.
What it is
An open cable landing station — open meaning multiple cable operators and consortiums can land there, rather than it being tied to one carrier
Why Chennai
Chennai has the second-highest concentration of submarine cables in India after Mumbai, and the shortest route to Singapore. The landing station converts that city-level advantage into a building-level one
What 'open' means commercially
Open landing stations lower the barrier for new cable consortiums and allow multiple carriers to compete at the same landing point. That tends to reduce transit costs for tenants and increases route diversity
The strategic effect
Sify is not selling rack space here so much as proximity to the internet's physical edge. A campus that terminates subsea capacity on-site can serve workloads that no inland facility can, regardless of capacity
The comparison
Nxtra's Chennai-II campus (PRJ-011) is described as integrated with Airtel's submarine cable network. Sify's claim is stronger — physical landing on site, not network integration
What is not disclosed
Which cables land there, the number of fibre pairs, the landing station operator, and the commercial terms for cable access
4Liquid cooling and the rack density claim
This is the one specification in the entire registry that genuinely separates an AI-ready facility from a relabelled colocation site.
The density claim
Up to 200 kW per rack with liquid cooling. Air-cooled racks are offered at 8–25 kW per rack
The certification basis
The NVIDIA DGX-Ready certification is stated against 130 kW per rack — Sify's chief executive described it as support for 7 to 8 GPU servers per rack at roughly 130 kW
Why the two numbers differ
130 kW is the certified capability; 200 kW is the design ceiling. A vendor quoting against this site should ask which is contractual
What 200 kW per rack means physically
For context, a conventional Indian enterprise colocation rack draws 5–10 kW. At 200 kW, a single rack draws as much power as 20 to 40 conventional racks, and cannot be cooled by air at all. It requires direct-to-chip cold plates or immersion, high-flow coolant distribution, manifolds, leak detection and a dedicated CDU plant
The equipment implication
A hall of 200 kW racks needs a fundamentally different bill of materials: CDUs, cold plates, high-pressure manifolds, coolant and filtration, leak detection, and heat rejection sized for liquid rather than air. Very few Indian vendors can supply this today, which is why the DGX-Ready certification matters — it is a short list
NVIDIA positioning
Sify became an NVIDIA colocation partner in September 2024 and was the first provider in India inside the DGX-Ready Data Center programme for liquid cooling. Rabale was certified first, then Chennai 02 and Noida 02 in May 2025
The honest caveat
The certification attests capability, not deployment. No GPU count, no named AI tenant and no liquid-cooled hall commissioning has been published for this campus. Gridvik records the capability and does not claim liquid-cooled workloads are running at scale
5Cost and the investment stack
Figure 1Sify's Chennai 02 investment, from the single tower to the cumulative 2027 commitment. Only Tower 1's ₹1,882 crore is spent money against a completed building.
Tower 1
Built at a cost of ₹1,882 crore, as stated by Tamil Nadu's industries minister at inauguration. At 25.92 MW of built capacity that is about ₹72.6 crore per MW — roughly US$8.2 million per MW, which is in line with AI-specified rather than conventional colocation costs
Sify's own campus investment
About ₹2,500 crore, per the company's chairman and managing director
Total campus investment
About ₹10,000 crore, with the balance coming from partners including hyperscalers rather than from Sify alone
Cumulative commitment
Sify said cumulative investment would cross ₹13,000 crore by 2027, including potential customer investment. The state government described the project as part of a US$1.2 billion Tamil Nadu investment plan
Jobs claim
10,000 jobs claimed at the campus level; 1,000 direct jobs stated at inauguration
Why the stack matters
The gap between ₹2,500 crore of Sify money and ₹10,000 crore of total campus investment is the most interesting number here. It means roughly three quarters of this campus is expected to be funded by tenants — build-to-suit arrangements where a hyperscaler pays for the fit-out. That is a materially lower-risk model for Sify and a strong signal that at least one large tenant is engaged, even though none is named
6Timeline
Sify becomes India's first provider in the NVIDIA DGX-Ready Data Center programme, certified for liquid cooling at Rabale, supporting 130 kW per rack.
Chief minister M K Stalin inaugurates the Chennai 02 campus at Siruseri. Tower 1 of three, built at ₹1,882 crore. The on-site open cable landing station is inaugurated alongside it.
Chennai 02 and Noida 02 are certified under the DGX-Ready programme for liquid cooling, joining Rabale. Sify is the first provider in India with the certification across multiple facilities.
Built IT power at Chennai 02 reported at 25.92 MW. Campus design stated at 130+ MW across three towers.
Sify signals a US$5 billion Indian AI data-centre expansion. Operator material describes Chennai 02 at 130+ MW eventual and cites 309.6 MWp of contracted renewable energy
Towers 2 and 3, taking the campus toward 130+ MW. No published phase dates
7Procurement
Read this before the table
Tower 1 is built. Towers 2 and 3 — roughly 104 MW — remain, on a permitted site with a landing station, a Rated 3 certification and an NVIDIA liquid-cooling qualification already in place. This is the most specification-rich opportunity in southern India. Everything below is a Gridvik estimate.
Procurement window and scope
Gridvik assessment · 22 Oct 2026
Order window
2026 to 2030. Two towers of roughly 52 MW each remain against the 130+ MW design, delivered in phases. Because the design and certification are already established, the specification risk is low and the repeat-order probability is high — a vendor who supplies Tower 2 is well placed for Tower 3.
Procurement heat
High. A listed company (NASDAQ: SIFY) scaling aggressively, with a US$5 billion Indian expansion signalled and roughly three quarters of campus investment expected from tenants.
Who buys
Sify Infinit Spaces centrally — but with a complication: where a hyperscaler funds the fit-out, the tenant influences the specification. Expect a two-party buying process on build-to-suit floors, which rewards vendors who are known to the hyperscalers as well as to Sify
DG / gensets (indicative)
At 130 MW of IT with N+1 configuration, roughly 165–190 gensets of 2,000–2,250 kVA class across the campus. Each remaining tower of about 52 MW implies roughly 65–75 units. Tamil Nadu requires CPCB IV+ compliance
UPS (indicative)
Rated 3 concurrent maintainability, with A+B power distribution to racks and PDUs with branch-circuit monitoring on the Rabale model. Likely N+1 or 2N centralised plant
Cooling (indicative)
The defining category, and the reason this page exists. Liquid cooling to 200 kW per rack means CDUs, cold plates, manifolds, coolant systems, leak detection and liquid-capable heat rejection — alongside conventional CRAH plant for the 8–25 kW air-cooled halls. Both categories are in scope on every tower
Categories in scope
HV/MV switchgear and substations · DG and gensets · UPS · PDUs and busway · chillers, CRAH and dry coolers · CDUs, cold plates, manifolds and coolant systems · leak detection · high-density racks and containment · structured cabling and optics · fire detection and suppression · BMS/DCIM · fuel storage · water treatment · 309.6 MWp of renewable contracts
Decision role
Public decision roles — in GridFeed
Stage-change history
Dated change log — in GridFeed
All estimates are labelled as estimates. No tender dates claimed, no private contact data published.
Campus design and built capacity, rack density claims, certification dates and basis, cable landing station and its capacity, Tower 1 cost, the investment stack, renewable contracts, inauguration date and dignitary
What is derived
The cost-per-MW calculation, the tenant-funding inference, and the procurement section
Capacity figure used
130+ MW design; 25.92 MW built. The 78 MW figure is published as unexplained and not adopted
Date correction
The registry records a June 2026 announcement. The inauguration is documented as 17 April 2025 across The Hindu, Times of India, The Hindu BusinessLine, the New Indian Express and UNI. Gridvik uses the April 2025 date and notes the discrepancy
Liquid cooling caveat
The NVIDIA certification attests capability against 130 kW per rack. No liquid-cooled hall commissioning, GPU count or AI tenant has been published. The capability is recorded; deployment at scale is not claimed
Additivity rule
Non-additive as a campus aggregate. It contains Tower 1 and the future towers, and sits inside Sify's national portfolio
9Limits and open questions
The 78 MW figure
Unexplained. Does not reconcile to a tower or the campus
Liquid cooling deployment
No evidence of commissioned liquid-cooled halls, GPU counts or AI tenants despite the certification
Tenants
None named, despite the inference that roughly three quarters of campus investment is expected from partners
Remaining towers
No published phase schedule for Towers 2 and 3
Cable landing station
Cables landing there, fibre pairs, operator and access terms are not disclosed
Rated level
Described as Rated 3 in most operator material and Rated 4 in one press account. Unresolved
Renewable delivery
The operator cites 309.6 MWp contracted and a target of 70% renewable eventually, against an aspiration of powering Siruseri entirely with renewables — three different standards in circulation
What we will not claim
No confirmed liquid-cooling deployment, no tenants, no tower schedule, and no equipment brands
10Sources
This record was compiled entirely from publicly available sources, cross-checked against one another.
Sify Infinit Spaces and Sify Technologies data-centre pages·Sify newsroom, NVIDIA certifications·Sify investor relations and annual report FY2024-25·The Hindu·The Hindu BusinessLine·Times of India·Economic Times·New Indian Express·UNI·Analytics India Magazine·The Outpost AI·The Print·DatacenterLocations·ArusGrid·X / T R B Rajaa
Gridvik does not publish source URLs on record pages; citations are retained in the internal source register and are available on request.
What this page is, and what it is not
This is a public-source record of a live AI-specified campus with two towers still to build. Capacity, density, certification and cost are attributed to Sify, the state government and the outlets that reported them.
The procurement section is labelled as estimation. No tender insider information, no private contact data, no operator-paid placement. Corrections are free and published with a date.
