Under construction
Colocation
Liquid cooling
Tier III

NTT GDC Tokyo TKY11

NTT GDC · Shiroi / Inzai

Planned IT
50 MW
Free to lease
40 MW
$ / kW·mo
$152
White space
100k ft²

Inventory

20% occupied

Power

50 MWlive

40 MW to lease · 10 MW in use

White space

100k ft²total

80k ft² free · 20k ft² occupied

9,290 m² · 7,432 m² free

Free power is unsold critical IT at this building, not utility headroom. Space is computer-room white space.

Power

IT live—
Free to lease40 MW
Utility feed—
Campus / planned50 MW

Power cost

$152/kW·mo

17.6¢ industrial · 20.8¢ after PUE 1.18

Per MW·year
$1.8M
This site · 50 MW
$91M/yr
80 kW rack
$12,129/mo
3.2¢ cheapdear 22.4¢

5.5× the cheapest market (Iceland Landsvirkjun). Same IT load there is $74M/yr less.

TEPCO Chiba · utility tariff × PUE, not colo list price.

Redundancy
2N
Opened
2027
Renewable match
40%
Rack density
80 kW
PUE
1.181.00 ideal · 1.60 typical
Power source
TEPCO. Dual utility feeds. Seismically isolated (免震) building.

Cooling

Plant

Hybrid

Liquid

Deployed

Rack density

80 kW

H100-eq

—

WUE

0.72 L/kWh

fleet avg · 2024 · 315k m³/yr at 50 MW

0 dry2.50 evaporative

Operator fleet average applied to this hall — not a site meter. NTT DATA GDC 2025 Sustainability Report (FY2024).

Direct-to-chip cold plates and rear-door heat exchangers. Designed for GB200/Blackwell-class racks.

Network carriers

7

On-net and metro carriers typically present at this location, including internet exchanges. Not a full circuit inventory.

Clouds

5

Native regions and typical Direct Connect / ExpressRoute / Interconnect on-ramps at this campus. Availability varies by hall.

Location

Shiroi, Chiba, Japan

Shiroi, Chiba

35.791°, 140.056° · Asia

Tenants / users

Hyperscale, AI clouds

Notes

50 MW IT, service start targeted April 2027. Neighbor to the much larger TKY12 campus.

Operator site

Compiled from public filings, operator pages, and reporting. Not an official operator specification.