NTT India — 400 MW claimed, 273.2 MW evidenced, 237 MW tracked elsewhereNTT Global Data Centers · India · ~400 MW live IT · 22 live data centres · 200+ MW under construction · Zero megawatts counted from this record

NTT Global Data Centers is the largest operating data centre operator in this registry at 273.2 MW across 16 named buildings. It is also the company whose own disclosures span a wider range than any other in the file. In December 2025 NTT stated about 400 MW of live IT load in India with more than 200 MW under construction across 22 live data centres. In June 2026 a third-party tracker recorded 237 MW live across 16 data centres with 105 MW under construction in five. This registry counts 273.2 MW operating across 16 records and 169.4 MW in pipeline. Three sources, the same estate, a 163 MW spread on live capacity — 41% of the company’s own figure. None of the three is dishonest, and that is exactly why the difference is worth publishing: it is what “400 MW” costs you when someone asks which 400.

1At a glance

2Three numbers for one estate

The six-facility difference is the first clue and the easiest to explain. NTT says 22 live data centres in India; this registry holds 16 operating records. The six that are missing are not hidden — they are facilities that publish no capacity at all, or facilities counted as part of a campus.

A data centre that publishes no megawatt figure cannot be counted, even when it is visibly running. That is the honest limit of a registry built from public disclosure, and NTT is not required to fill it.

The capacity difference is the harder problem. 273.2 MW across 16 buildings is 17.1 MW per building. 400 MW across 22 is 18.2 MW per building. Those averages are close enough that the gap is more likely to be six missing facilities than sixteen overstated ones — but that is an inference, not a reconciliation, and this registry does not publish inferences as facts.

3Why 400 and 273.2 cannot both be right

Both could describe reality if they measured different things. Three explanations are possible, and only NTT can say which applies.

The second explanation is the one a buyer should price. If “about 400 MW live” means energised or contracted, then the gap between 400 and 273.2 is not an error in either number — it is the difference between capacity that exists and capacity that is paying. In a market where operators routinely pre-lease 60% to 80% of a new building before commissioning, a 32% gap between energised and occupied is entirely normal.

But nobody publishes which one they mean, and that is the defect. Every operator in this file uses “operational”, “live”, “built” and “available” as if they were synonyms. They are not, and the difference across NTT’s own range is 163 MW.

4The 16 buildings behind 273.2 MW

Two of the sixteen carry 98 MW and neither has a resolved basis. Mumbai 9 at 62 MW and Mumbai 8 at 36 MW are the largest single facilities in the national operating total, and the registry cannot say whether 62 MW is IT load or facility power. If both are facility power at a PUE of 1.5, the true IT contribution is 65.3 MW, not 98 MW — a 32.7 MW overstatement inside the most important number on this page.

That is the single largest open item in the whole registry: 1,456.1 MW of the reconciled national total is facility power or an unresolved basis, and NTT Mumbai 8 and 9 are the biggest names in that bucket.

The defensible NTT operating figure is therefore a range: 240.5 to 273.2 MW. Both ends come from the same 16 records; the difference is whether the two Mumbai facilities publish IT load or facility power. Either way NTT is the largest operating operator in India, and either way the 400 MW claim is above it.

5The under-construction claim

The tracker’s 105 MW against this registry’s 169.4 MW is a 64 MW difference on construction status — and it points the other way from the live-capacity gap. Here the public building records are higher than the tracker, because several of these buildings are announced with dates and footprints but have not reached whatever threshold the tracker applies.

Bengaluru 4B and 4C are the clearest case. Both are identical 22.4 MW buildings on a site with a live 220 kV substation and a commissioned first building. Are they under construction? Physically almost certainly. In this registry, they are pipeline, because no source states a construction start. That is the conservative answer, and it costs the registry 44.8 MW of building-tier capacity it could probably claim.

6What this means for the national total

Two consequences follow, and only one of them is comfortable.

If 273.2 MW is right, then NTT is 35.1% of India’s named operating capacity, and the market is more concentrated than the eight-operator table on the reconciliation page suggests. One operator, one country, more than a third of the evidenced estate.

If 400 MW is right, then India’s operating capacity is understated by roughly the same 32% across every operator, because every operator uses a similarly loose definition, and the true national figure is nearer 1,140 MW than 778.69 MW — 778.69 divided by the same 68.3% ratio. Both conclusions are publishable. Only one of them is currently supported by building-level records, and it is the lower one.

For an acquirer, the asymmetry is the point. A dataset that says 778.69 MW and shows its work is a diligence asset. A dataset that says “about 400 MW” and does not is a press release.

7The one question to ask NTT

Everything on this page resolves if one question is answered, and it is a fair question rather than a hostile one.

Gridvik’s position is that the answer is worth money to both sides. NTT will publish an offering circular or a bond prospectus eventually, and the buyer of a capacity dataset wants to already know how the numbers will look when it does.

8How this record is handled

This is the record type that causes the most damage when mishandled. In the previous count, 45 container records were mixed into a single national total alongside 0.3 MW exchange buildings. The reconciliation of 26 October 2026 separated them, and the effect on NTT was to move it from a diffuse presence to the clearly identified largest operator in the file at 273.2 MW operating.

The 400 MW claim stays published here, dated, attributed and excluded from every total. That is not a rebuke of NTT. It is the only way to hold two true statements about the same company without pretending they are one number.

9Sources

Sources: Moneycontrol, 3 December 2025, reporting NTT’s statement of about 400 MW of live IT load in India, more than 200 MW under construction, 22 live data centres and a ₹2,400 crore Devanahalli commitment; NTT Global Data Centers Bengaluru 4 specification page and launch release, 3 December 2025; Economic Times, 3 December 2025 and June 2026, on the Bengaluru investment and the 22.4 MW first phase; Data Center Dynamics, April 2026, on the Prestige Tech Cloud partnership and the US$288 million investment; Business Standard and PTI reproductions of the Bengaluru 4 launch; a third-party capacity tracker recording 237 MW live across 16 data centres and 105 MW under construction in five, as of 22 June 2026; Gridvik records PRJ-150 to PRJ-177 and PRJ-233, the 23 NTT records carrying capacity. Record verified 26 October 2026.