IIJ Shiroi Data Center Campus
IIJ · Shiroi
- IT live
- 20 MW
- Free to lease
- 1.6 MW
- $ / kW·mo
- $157
- White space
- 114k ft²
Inventory
92% occupiedPower
20 MWlive
1.6 MW to lease · 18.4 MW in use
White space
114k ft²total
9,091 ft² free · 105k ft² occupied
11k m² · 845 m² free
Free power is unsold critical IT at this building, not utility headroom. Space is computer-room white space.
Power
About 17.5 MW of the utility feed is cooling, conversion, and house load.
Power cost
$157/kW·mo
17.6¢ industrial · 21.5¢ after PUE 1.22
- Per MW·year
- $1.9M
- This site · 20 MW
- $38M/yr
- 12 kW rack
- $1,881/mo
5.5× the cheapest market (Iceland Landsvirkjun). Same IT load there is $31M/yr less.
TEPCO Chiba · utility tariff × PUE, not colo list price.
- Redundancy
- 2N
- Opened
- 2011
- Renewable match
- 40%
- Rack density
- 12 kW
- PUE
- 1.221.00 ideal · 1.60 typical
- Power source
- TEPCO. Dual utility feeds. Seismically isolated (免震) building.
Cooling
Plant
Hybrid
Liquid
Deployed
Rack density
12 kW
H100-eq
—
WUE
—
Operator has not published WUE. Blank, not zero — air-cooled sites still use some water.
Outside-air economization plus chilled water. Liquid-ready GPU cages on newer modules.
Network carriers
6On-net and metro carriers typically present at this location, including internet exchanges. Not a full circuit inventory.
Clouds
5Native regions and typical Direct Connect / ExpressRoute / Interconnect on-ramps at this campus. Availability varies by hall.
Location
Shiroi, Chiba, Japan
5-chome Sakuradai, Shiroi, Chiba
35.788°, 140.054° · Asia
Tenants / users
IIJ cloud, enterprise, government
Notes
IIJ's flagship modular campus in Shiroi, next to the Inzai cluster. Expanding toward 30 MW.
Compiled from public filings, operator pages, and reporting. Not an official operator specification.