NTT GDC Tokyo TKY12

NTT GDC · Shiroi / Inzai

Planned IT: 200 MW
Free to lease: 200 MW
$ / kW·mo: $148
White space: 400k ft²

Inventory

0% occupied

Power

200 MWlive

200 MW to lease · 0 MW in use

White space

400k ft²total

400k ft² free · — occupied

37k m² · 37k 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 lease200 MW

Utility feed—

Campus / planned200 MW

Power cost

$148/kW·mo

17.6¢ industrial · 20.2¢ after PUE 1.15

Per MW·year: $1.8M
This site · 200 MW: $355M/yr
100 kW rack: $14,775/mo

3.2¢ cheapdear 22.4¢

5.5× the cheapest market (Iceland Landsvirkjun). Same IT load there is $290M/yr less.

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

Redundancy: 2N
Opened: 2028
Renewable match: 50%
Rack density: 100 kW
Voltage: 400 V
154 kV
275 kV
PUE: 1.151.00 ideal · 1.60 typical
Power source: TEPCO. Dedicated substation on the Inzai–Shiroi corridor. Six-building campus.

Cooling

Plant

Direct-to-chip

Liquid

Deployed

Rack density

100 kW

H100-eq

—

WUE

0.72 L/kWh

fleet avg · 2024 · 1.3M m³/yr at 200 MW

0 dry2.50 evaporative

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

Campus-scale liquid-ready AI factory. Six buildings, ~200 MW IT. Announced April 2026.

Network carriers

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

Clouds

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

Location

Shiroi, Chiba, Japan

Shiroi, Chiba

35.794°, 140.060° · Asia

Tenants / users

Hyperscale, AI clouds

Notes

Japan's largest announced NTT campus. Combined Shiroi/Inzai NTT GDC pipeline ~250 MW with TKY11.

Operator site

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