Published specificationsOperation announced
Fukushima Shirakawa Data Center
Shirakawa City, Fukushima Prefecture
Modular expansion-type facility in Shirakawa City, Fukushima Prefecture. Approximately 3,320 racks in total across Buildings 1 to 5, employing outside-air cooling and water-cooled air conditioning.
Capacity3,320 racks
Rack powerStandard 8kVA/rack
Cooling methodDirect/indirect outside-air cooling, water-cooled air conditioning
Published specifications
- Cabinet capacity
- 3,320rackFacility total across Buildings 1 to 5 · Breakdown: 1,400 in Building 5, 420 in Building 4, 300 in Building 3, and 600 each in Buildings 1 and 2
- rack power standard
- 8kVA/rackStandard
- receiving power
- 25MVAStated in official completion announcement · Not IT capacity
- Cooling
- Buildings 1 and 2 use direct outside air; Buildings 3 to 5 use indirect outside air. The current facility page also lists combination with water-cooled air conditioning.By building
Differences between published sources
- The current official top page lists 8 buildings and 50MW at maximum expansion, but what can be confirmed from official completion announcements for operational phases is 3,320 racks across Buildings 1 to 5. Planned total capacity has not been added into the current operational capacity.
Notes
- Set operator to SoftBank due to business succession on April 1, 2026.
- Basis for medium-scale or larger adoption: Confirmed a total of approximately 3,320 racks across Buildings 1 to 5 in official completion announcements, meeting the criteria.
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