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Facility record · Verified 26 Oct 2026

CapitaLand Mumbai Tower 1 — Airoli, Navi MumbaiCapitaLand India Trust and CIDCF · Airoli, Navi Mumbai · 34 MW IT · 50 MW gross power · Completed · Additive, 34 MW counted

Record PRJ-196Maharashtra — Navi MumbaiTier A — filed, itemised, both scopes4 public sources checkedAdditive: yes — 34 MW counted
Both capacity scopes statedCompleted and leased34 MW countedTenant not namedRatio 1.47, inside the normal band
34MW
IT capacity
50MW
Gross power
1.47
Gross to IT ratio
16MW
Headroom
9.0%
Of Maharashtra
0MW
Hidden from the count

Tower 1 at Airoli is 34 MW of IT capacity behind 50 MW of gross power capacity, completed, and part of a campus fully leased to a single global hyperscaler. It is a small record and it is the most important one in this batch, because it is the exact shape every record in this registry should have: the sellable figure and the infrastructure figure, both stated, both dated, both attributable to a filing. Three records earlier in this file were flagged additive and carried no capacity at all, hiding 8.8 MW. This one carries 34 MW and hides nothing.

1At a glance

Facility
Mumbai Tower 1, Airoli, Navi Mumbai, Maharashtra
Operator
CapitaLand India Trust with CapitaLand India Data Centre Fund
Fund holding
CIDCF holds 20.2% of three Indian data centres including this one
Status
Completed per the 31 December 2025 CIDCF filing
IT capacity
34 MW
Gross power capacity
50 MW
Gross to IT ratio
1.47
Headroom
16 MW of gross power above IT load
Occupancy
Fully leased per the 15 October 2026 CLI release, at campus level
Tenant
A leading global hyperscaler; not named
Share of Maharashtra’s 786.4 MW
4.3%
Counted in this registry
34 MW — additive, and the campus aggregate is excluded

2The 1.5 constant, six data points

CapitaLand Chennai 0153 gross / 34 IT1.56CapitaLand Hyderabad42 gross / 27 IT1.56CapitaLand campus108 gross / 71 IT1.52NTT NAV1A45 facility / 30 IT1.50CapitaLand Tower 255 gross / 37 IT1.49Iron Mountain MUM-3120 MVA / 85 IT1.41Six independent data points on one ratio. Anything between 1.4 and 1.6 is a normal Indian build; the outliers are what tell you a figure is mis-scoped.
Figure 1 — gross or facility power per megawatt of IT, from six independent disclosures. The cluster at 1.47 to 1.56 is the design norm; Iron Mountain’s 1.41 is a new build with a tightly sized substation.
What each ratio actually means
AssetRatioReading
CapitaLand Chennai 011.56New build, liquid-cooled ready, most headroom
CapitaLand Hyderabad1.56Same design generation
CapitaLand Navi Mumbai campus1.52Two towers averaged
CapitaLand Tower 11.47Tightest CapitaLand build in the file
NTT NAV1A1.5045 MW facility against 30 MW IT
Iron Mountain MUM-31.41Substation sized with no spare
The audit rule

Take any published capacity number in India. Multiply by 1.5. If the answer is a plausible substation size for the site, the number was IT load. If dividing by 1.5 gives you the substation, the number was facility or gross power.

CapitaLand Tower 1 makes the rule visible because it publishes both: 34 × 1.5 = 51, against a stated 50 MW of gross power. A 2% error across an unstated scope.

This is the check that separates the 85 MW that will get built from the 3 GW that is a letter of intent, and it costs nothing to apply.

3Sixteen megawatts of headroom

The gap between gross power and IT load is 16 MW of built infrastructure that is not yet sold as load. On a completed, fully leased building that is a specific commercial statement.

Where 50 MW of gross power goes
ItemMWNote
Gross power capacity50What the site can draw
IT load capacity34What can be sold to tenants
Difference16Cooling, losses, distribution and design margin
As a share of gross32%Normal for a completed Indian build
Ratio to IT1.47Inside the 1.4 to 1.6 band

Read carefully, none of that 16 MW is spare capacity a tenant could buy. It is the cooling plant, the transformation losses and the redundancy that the 34 MW requires. A building with a 1.47 ratio is not holding back 16 MW; it is spending it on physics.

This is the misunderstanding that inflates published Indian capacity totals. Add up every gross power figure in the market and you get a number roughly 1.5 times the sellable capacity, and then it gets quoted as though it were the sellable capacity.

4Procurement

Procurement window and scope
Gridvik assessment · 22 Oct 2026
What to buy here
A completed, fully committed tower — diligence on the lease, not on the capacity
Where the capacity is
Airoli, Navi Mumbai. 34 MW IT, 50 MW gross, completed
Who holds the answer
CapitaLand India Trust; the tenant is a global hyperscaler, unnamed
The one question
What is the lease term and expiry profile on this tower
Why they will answer it
A listed REIT publishes weighted average lease expiry in its results
Gridvik estimate
Renewal risk in the early 2030s is the only meaningful exposure here. Labelled an estimate
What changes it
A CLINT results disclosure of portfolio WALE and top-tenant concentration
All estimates are labelled as estimates. No tender dates claimed, no private contact data published.
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5Limits and open questions

  • 34 MW is IT capacity as stated in the CIDCF filing. It is the figure counted.
  • The tenant is not named, so counterparty risk cannot be assessed from public sources.
  • Completion is per a December 2025 filing; the campus release of October 2026 confirms the campus, not this tower separately.
  • No floor area is published for the tower, so no density or area-per-megawatt figure exists.
  • 20.2% of the asset is held by CIDCF; the trust holds the balance. Ownership matters for who can sell capacity.
  • 34 MW is counted once, through this record. The campus aggregate is excluded to prevent double counting.
  • What would close it. A lease term and a named tenant category.

6Sources

Sources: the CapitaLand India Data Centre Fund release of 31 December 2025; the CapitaLand Investment release of 15 October 2026; CapitaLand data centre listing pages; and CLINT results disclosures.