STT GDC Mumbai 2 is 1 MW. It is the smallest data centre record in this registry apart from a half-megawatt edge site in Patna, and it is a real building that reconciles exactly into the company’s 133 MW Mumbai headline. Delete it and the headline becomes 132 MW — a change of 0.8%. That is the whole lesson of this page: portfolio numbers are quoted as if every megawatt inside them were supply, and the smallest buildings are the ones that make the aggregate look complete without adding anything a tenant can buy.
1At a glance
2One megawatt is a suite
For context on what a single megawatt is: it is a small number of cabinets, and in an Indian market where 250 MW parks are being announced, it is nearly invisible.
| Assumed density | Cabinets | What that looks like |
|---|---|---|
| 5 kW a rack | 200 | a small hall, enterprise and storage |
| 8 kW a rack | 125 | two rows of contained aisle |
| 12 kW a rack | 83 | one aisle of accelerated compute at most |
A single megawatt cannot host a hyperscale tenant, cannot host a GPU cluster of any consequence, and cannot be sold as a growth path. It can host one enterprise customer with a redundancy requirement.
Which makes it a perfectly sensible building to own — as a connectivity anchor, as a lease on a site that may redevelop, or as a tenant relationship. It is not sensible to count in a supply forecast.
3What 1 MW does to a headline
The portfolio arithmetic is exact and published. What it conceals is the range inside it.
| Measure | Figure | Reads as |
|---|---|---|
| Headline | 133 MW | the number in market reports |
| Without Mumbai 2 | 132 MW | statistically identical |
| Largest building | 49 MW | 37% of the portfolio in one asset |
| Smallest building | 1 MW | 0.75% of the portfolio in one asset |
| Ratio | 49 to 1 | the headline averages two things that share nothing |
| Navi Mumbai share | 119 MW | 89% of the portfolio is in three buildings |
This is not a criticism of STT, whose aggregate is the only one in this registry that reconciles at all. It is a warning about how aggregates get used. A market report quoting "133 MW in Mumbai" is quoting a sum whose largest member is 49 times its smallest, and whose composition nobody outside the company can see.
A portfolio total is not supply. It is a sum of assets with different ages, different densities, different customers and different remaining lives.
When this registry reports a portfolio, it reports the cards underneath it. That is the only way the number stays useful after the first month.
4Procurement
5Limits and open questions
- Nothing but a number. One megawatt, one name, no basis, no racks, no date.
- Single source. No directory lists a 1 MW STT Mumbai site separately.
- Risk of double counting in third-party lists. Small cards like this are sometimes counted both as a facility and inside a city headline. This registry counts neither.
- Purpose unknown. It may be a live commercial suite, a connectivity anchor or a leased site awaiting redevelopment. The public record does not say.
- What would close it. One line from the operator. This is the cheapest record in the file to complete.
6Sources
Sources: STT GDC India Mumbai city page, STT GDC India corporate site, STT GDC facility pages, and Indian market commentary on Mumbai data centre capacity.