Japan AI Data Center Projects

Every tracked AI data center project, grouped by build status. Operational, under construction, announced, and permitted, with developer, tenant, capacity, and cost details.

Projects tracked: 12
Operating: 8
Under construction: 3
Announced / permitted: 1
Total capacity: 2.1 GW
Estimated investment: ~$18.2B

Japan has 12 tracked AI data center projects: 8 operating, 3 under construction, and 1 announced or permitted. Together they represent 2.1 GW of capacity and roughly $18.2B of announced investment. Developers active here include Amazon Web Services, Microsoft, AirTrunk, SoftBank Corp., SoftBank. Each project below links to a detail page with developer, tenant, capacity, timeline, and the public supply-chain companies exposed to the build.

Amazon Web Services AP-NORTHEAST-1 Tokyo Region, 500 MW, Tokyo, Japan · developer: Amazon Web Services · operational
Microsoft Japan AI Data Centers (Tokyo & Osaka), 500 MW, Tokyo, Japan · developer: Microsoft · operational
AirTrunk TOK1 AI Expansion (Tokyo), 300 MW, Inzai, Japan · developer: AirTrunk · under construction
SoftBank Tomakomai AI Data Center (Japan), 300 MW, Tomakomai, Japan · developer: SoftBank Corp. · under construction
Amazon Web Services Osaka Region (AP Northeast 3), 150 MW, Osaka, Japan · developer: Amazon Web Services · operational
SoftBank Sakai AI Data Center, 150 MW, Sakai, Japan · developer: SoftBank · under construction
Oracle Cloud Japan East (Tokyo), 100 MW, Tokyo, Japan · developer: Oracle · operational
Alibaba Cloud Japan Region (Tokyo), 80 MW, Tokyo, Japan · developer: Alibaba Cloud · operational
TY15x Tokyo, 30 MW, Tokyo, Japan, Japan · developer: Equinix · operational
Hiroshima HBM Fab, Hiroshima, Japan, Japan · developer: Micron · announced · ~$9.6B
JASM Fab 1 (Kumamoto), Kumamoto, Japan, Japan · developer: TSMC · operational · ~$8.6B
AIST ABCI-3 Supercomputer (Japan), Tsukuba, Japan · developer: National Institute of Advanced Industrial Science and Technology (AIST) · operational