On 16 March 2026 STT GDC India broke ground on the first data centre at its Palava campus inside Lodha Industrial Park, between Thane and Navi Mumbai: a 50 MW first phase within a campus designed to scale to about 400 MW of IT load on 46 acres. It is the third STT campus in the Mumbai region and the first that was designed for AI and high-density computing from the outset. The number most often attached to it — a ₹5,000 crore investment — is not the campus cost. Divide it by 400 MW and you get ₹12.5 crore a megawatt, roughly a fifth of what Indian data centre capacity actually costs to build. The commitment covers STT’s Mumbai and Pune expansion too, and no Palava-specific capital figure has been published.
1At a glance
2The ₹5,000 crore that is not Palava’s
This is the single most misread number in the Mumbai market, and the arithmetic shows why in one line.
| Test | Result | Reading |
|---|---|---|
| ₹5,000 crore ÷ 400 MW | ₹12.5 crore | a fifth of the cheapest rate at which capacity in this registry was built |
| What 400 MW costs at ₹52 crore a megawatt | ₹20,800 crore | the low end of observed build cost |
| What 400 MW costs at ₹70 crore a megawatt | ₹28,000 crore | the top end |
| What ₹5,000 crore buys at ₹52 to ₹70 crore a megawatt | 71 to 96 MW | roughly the first phase plus land and infrastructure |
| Conclusion | the ₹5,000 crore covers the first phase and the state-wide expansion, not the campus | no Palava-only capital figure has been published |
There are two more reasons the rupee figure cannot be the campus. First, the MoU is explicitly for up to ₹5,000 crore to expand the existing Mumbai and Pune parks as well as build Palava. Second, in the same period the underlying land was bought separately: reports put an initial parcel at around $56 million, and Lodha has been selling plots inside its park to multiple operators.
None of this is a criticism of STT. It is a criticism of how the number is being repeated — including in investment notes and in at least one industry ranking. A ₹12.5 crore a megawatt data centre is not cheap capacity; it is a phase-one commitment being compared against whole-campus numbers.
Every Indian campus announcement in this registry has the same defect: the money is for phase one and the capacity is for the campus. Palava is the cleanest example because the arithmetic fails by a factor of four.
When comparing projects, compare who has broken ground and how many megawatts are actually funded. On that basis Palava has 50 MW of committed capacity and 400 MW of design.
350 MW now, 400 MW designed
The distinction between design and phase is the whole difference between a campus that will exist and one that might.
| Item | Status |
|---|---|
| 50 MW first phase | Ground broken 16 March 2026. Under construction |
| 400 MW campus | Design intent. Requires seven further phases of roughly 50 MW, each needing its own capital, approval and tenant |
| 46 acres | Site area as reported in March 2026. Sufficient for 400 MW only at multi-storey densities |
| Purpose-built for AI | The October 2025 MoU describes the campus as purpose-built for AI and high-density computing. No rack density, cooling design or GPU tenant has been published |
| Ready-for-service | Not disclosed |
| Tenants | None named |
| Power | No connection agreement, sanction or capacity charge disclosed |
The pacing detail is worth noting. STT has more than 400 MW of critical IT load across 30 facilities in operation and development nationwide. A single 400 MW campus in Palava would therefore be roughly equal to the entire rest of the Indian portfolio, which tells you the 400 MW is a decade-long ceiling rather than a near-term pipeline.
Palava’s practical significance in the near term is the 50 MW. That is a real building, on real land, with a real groundbreaking, and it is more than most of the records in this registry will deliver before 2029.
4Palava is becoming a cluster
The campus matters less than its address. Palava, and the Ambernath–Palava corridor more broadly, is assembling into the densest concentration of announced data centre capacity in India, and that has consequences no single record shows.
| Project | Capacity | Status |
|---|---|---|
| STT GDC Palava | 400 MW design, 50 MW building | ground broken March 2026 |
| Digital Edge Palava | 270 MW reported | about 30 acres bought from Lodha; Lodha confirmed the transaction, not the project |
| Amazon Ambernath | 473 MW reported | separate project in the same corridor |
| Lodha power shells | 1,000 MW build-to-suit on about 100 acres | Lodha’s own programme inside its 400-acre park, with 3 GW of power claimed |
| Lodha park land bank | 400 acres, 2.5 to 3 GW of power claimed | the master plan that everything above sits inside |
That concentration is good for the corridor and bad for everything else in Maharashtra. Power, water and skilled labour are finite in a corridor. A 3 GW claim on an area between Thane and Navi Mumbai is a claim on transmission capacity that ultimately comes from the same state grid that every other campus in the registry is also drawing from.
For suppliers the message is useful and unambiguous: this is where to be. A single service engineer based in the corridor can cover 2 GW of installed capacity within an hour’s drive. That economics does not exist in Chennai, Hyderabad or Noida, where capacity is spread across a wider area.
5New owner: KKR and Singtel
The ownership of the counterparty changed four months after ground was broken, which matters for anyone with a purchase order in the pipeline.
| Item | Detail |
|---|---|
| Announced and completed | September 2026 |
| Buyer | A KKR-led consortium with Singtel |
| Asset | An 82% stake in STT GDC |
| Value | $5.2 billion |
| Split | KKR about 75%, Singtel about 25% of the acquiring consortium |
| What it means for Palava | A well-capitalised owner with a stated infrastructure thesis. Financial sponsors of this kind fund build-outs on schedule when the returns are contracted |
| What it means for procurement | Expect standardisation across the portfolio. A new sponsor typically reviews capital programmes, vendor panels and specification standards, and often consolidates both |
| What is unchanged | The 400 MW design, the 50 MW phase, the site and the absence of a ready-for-service date |
The strategic read is that a $5.2 billion valuation for 82% of STT GDC implies roughly a $6.3 billion enterprise-level equity value for a business with 400-plus megawatts in operation and development across ten Indian cities. That is the clearest price the market has put on Indian data centre capacity in this cycle, and it is a useful benchmark for every other record in this registry that claims to be worth something.
Singtel retaining a quarter of the acquiring vehicle also tells you something about the seller’s view: this is not an exit, it is a capital injection into a business the sponsor expects to grow.
6Timeline
- STT GDC India signs a Maharashtra MoU for up to ₹5,000 crore of additional investment across its Mumbai and Pune parks, including a new large-scale campus at Palava described as spanning over 27 acres and purpose-built for AI and high-density computing
- Ground broken on the first data centre at the Palava campus: 50 MW of IT load within a campus designed to scale to about 400 MW, now described as spread across 46 acres inside Lodha Industrial Park
- DCD, W.Media and The Tech Capital report the groundbreaking. No ready-for-service date is disclosed
- Digital Edge is reported to have bought about 30 acres in Palava from Lodha for a 270 MW project. Lodha confirms the land transaction only
- A KKR-led consortium with Singtel completes the acquisition of an 82% stake in STT GDC for $5.2 billion
- Construction status last publicly confirmed in March 2026. No phase completion, tenant, power sanction or ready-for-service date has been published
7Procurement
8Assumptions and method
| Figure | Basis | Confidence |
|---|---|---|
| 50 MW first phase | STT GDC India announcement of 16 March 2026, repeated by DCD, W.Media and The Tech Capital | High |
| 400 MW campus design | Same announcement. A design ceiling, not a funded programme | High as design |
| 46 acres | March 2026 coverage and the operator’s own post. October 2025 coverage said 27 acres | High, with a noted conflict |
| ₹5,000 crore | Maharashtra MoU of October 2025, covering Mumbai and Pune expansion as well as Palava | High as a commitment, not as Palava capex |
| ₹12.5 crore per MW | Gridvik arithmetic: ₹5,000 crore ÷ 400 MW. Shown to demonstrate that the figure is not Palava’s capex | Arithmetic, and explicitly rejected as a cost |
| ₹20,800 to ₹28,000 crore | Gridvik arithmetic at ₹52 and ₹70 crore per MW for 400 MW | Arithmetic |
| 8.7 MW an acre | Gridvik arithmetic: 400 MW ÷ 46 acres | Arithmetic |
| $5.2 billion, 82% | Reported KKR and Singtel transaction, September 2026 | Medium — from trade coverage, not a filing |
| 270 MW Digital Edge | Reported. The project has not been confirmed by the developer | Low |
| Not additive | The 400 MW sits inside the STT multi-state umbrella record | Recorded as a rule |
9Limits and open questions
10Sources
Sources: STT GDC India announcement and LinkedIn post of 16 March 2026, Data Center Dynamics, W.Media, The Tech Capital, Baxtel, Lodha Group, Business Standard, Moneycontrol, Blackridge Research, Financial Express, Digital Edge reporting via W.Media, KKR and Singtel transaction coverage.