Sify’s Airoli data centre is designed for 4.05 MW of IT power as of 30 June 2025, purpose-built for enterprise connectivity and interconnected with Sify’s Rabale facility at sub-millisecond latency to hyperscale public clouds. Sify’s Mumbai page states the same facility at 5.4 MW — a 33% difference, and the widest relative disagreement on a fully operating building anywhere in the Sify family. At 4.05 MW it is 0.5% of Maharashtra’s 786.4 MW, and it sits in Airoli, a node where four operators publish over 200 MW between them. That contrast is the point of this page: a small, genuinely connected site in the most capacity-advertised square kilometre of India.
1At a glance
2Four point zero five against five point four
| Source | Figure | Note |
|---|---|---|
| Sify Infinit Spaces Mumbai page | 4.05 MW | “As of June 30, 2025” — dated |
| Sify portfolio page card | 4.05 MW | Same figure |
| Sify Mumbai data centre page | 5.4 MW | Undated |
| Sify Europe data centre page | 5.4 MW | Undated, November 2025 |
| This registry | 4.05 MW | The dated figure, counted |
1.35 MW is not a rounding difference. It is 33% of the building, and on the registry’s own build band of ₹51 to ₹60 crore per megawatt it represents roughly ₹69 to ₹81 crore of asset value that exists in one document and not in another.
The pattern across the whole Sify family is consistent and it is the opposite of what one would expect: the dated figures are the smaller ones. Noida 02 is 25.92 MW dated against 30 MW undated. Airoli is 4.05 MW dated against 5.4 MW undated. Noida 01 is 10.96 MW undated and 10.8 MW on an older page.
Which means the dated capacity figures are probably as-built or as-fitted-out numbers, and the undated ones are design or target numbers. That is a sensible way for a company to publish, and it is also exactly why a naive reader gets a wrong answer.
Where two current figures exist for one operating building, the registry counts the one the operator publishes most often and dates, and states the other beside it.
Where a figure is a design target on a building that exists, it is capacity. Where it is a target on a building that does not exist, it is not.
Applying this to Airoli gives 4.05 MW. Applying it to Noida 02 gives 30 MW — because the 25.92 MW measurement is fourteen months old and the campus has been expanding since. Both decisions are recorded on the pages so a reader can disagree with either.
3Airoli, where four operators advertise 200 MW
| Operator | MW | Basis |
|---|---|---|
| CapitaLand, Navi Mumbai Tower 1 | 34 | IT, completed and leased |
| CapitaLand, Navi Mumbai Tower 2 | 37 | IT, stage in conflict |
| AirTrunk BOM1 | 62 | Facility, at least, stage unverified |
| Sify Airoli (this record) | 4.05 | IT, operating |
| Airoli published total | 137 | Mixed scopes |
| Maharashtra counted total | 786.4 | IT, additive rows |
| Airoli as a share | 17% | Of the state |
Seventeen per cent of Maharashtra’s counted capacity sits in one node of Navi Mumbai, and the smallest operator in it is the one that has been there the longest.
That is the Indian data centre market in miniature. Sify was operating in Airoli before AirTrunk existed in India and before CapitaLand sponsored a fund. Its 4.05 MW is genuinely connected, genuinely leased and genuinely small, while the node around it advertises 137 MW of which a substantial part is unbuilt or unverified.
For a tenant the useful distinction is the one this page makes. 4.05 MW that is connected to sub-millisecond cloud on-ramps and interlinked with Rabale is worth more per kilowatt than 62 MW of announced facility capacity. Which of the two an enterprise should buy depends on whether it needs capacity in 2027 or connectivity today.
4Procurement
5Limits and open questions
- 4.05 and 5.4 MW are both live on Sify pages. The registry counts 4.05 MW and records both.
- 4.05 MW is dated 30 June 2025 and may be stale if the site has been expanded.
- No rack count or floor area is published, so no density figure exists.
- Sub-millisecond latency is the operator’s claim and is not independently measured by this registry.
- Rabale’s capacity is not recorded here; the interconnect is noted but the paired site is a separate record.
- 4.05 MW is counted, taking Sify’s contribution to Maharashtra to 4.05 MW on this record alone.
- What would close it. One capacity figure for this building.
6Sources
Sources: the Sify Mumbai data centre page; the Sify data centre portfolio page; Sify Infinit Spaces Mumbai data centre page with the 30 June 2025 capacity date; and the Sify Europe data centre page.