Japan Data Centers
Live tracking of every data center project in Japan (operational, under construction, announced, and permitted) with developer, tenant, capacity, and supply-chain links.
- Operating: 1
- Under construction: 3
- Announced: 0
- Operating capacity: 30 MW
- Pipeline capacity: 750 MW
Data Center Index tracks 4 named data center campuses in Japan (large sites with a source, not every building): 1 operating, 3 under construction, and 0 announced or permitted. The pipeline adds up to 750 MW of planned capacity. Below: every tracked project in Japan, ranked by build status, followed by the public companies whose data center revenue is most exposed to this market.
Tracked data center projects in Japan
- JASM Fab 1 (Kumamoto), Kumamoto, Japan · operational · developer: TSMC · ~$8.6B
- Amazon Web Services AP-NORTHEAST-1 Tokyo Region, 500 MW, Tokyo · operational · developer: Amazon Web Services
- Microsoft Japan AI Data Centers (Tokyo & Osaka), 500 MW, Tokyo · operational · developer: Microsoft
- Amazon Web Services Osaka Region (AP Northeast 3), 150 MW, Osaka · operational · developer: Amazon Web Services
- Alibaba Cloud Japan Region (Tokyo), 80 MW, Tokyo · operational · developer: Alibaba Cloud
- TY15x Tokyo, 30 MW, Tokyo, Japan · operational · developer: Equinix
- AIST ABCI-3 Supercomputer (Japan), Tsukuba · operational · developer: National Institute of Advanced Industrial Science and Technology (AIST)
- Oracle Cloud Japan East (Tokyo), Tokyo · operational · developer: Oracle
- AirTrunk TOK1 AI Expansion (Tokyo), 300 MW, Inzai · under construction · developer: AirTrunk
- SoftBank Tomakomai AI Data Center (Japan), 300 MW, Tomakomai · under construction · developer: SoftBank Corp.
- SoftBank Sakai AI Data Center, 150 MW, Sakai · under construction · developer: SoftBank
- Hiroshima HBM Fab, Hiroshima, Japan · announced · developer: Micron · ~$9.6B
Frequently asked questions
- How many data centers are in Japan?
- Data Center Index tracks 4 named data center campuses in Japan as of 2026: 1 operating, 3 under construction, and 0 announced or permitted. Coverage is named campuses with a published source, not every building.
- How much data center capacity does Japan have?
- 30 MW is operating, with 750 MW in the announced and under-construction pipeline. Of the 8 Japan campuses with a capacity figure, 0 are filed, 1 stated and 7 estimated. Filed means a permit, utility filing or SEC filing states the figure. Stated means the developer or the press states it. Estimated means we modeled or inferred it, and the site marks it "est.". Filed and stated figures carry the date of the newest source behind them.
- What is the largest data center in Japan?
- Amazon Web Services AP-NORTHEAST-1 Tokyo Region in Tokyo is the largest tracked campus in Japan at 500 MW, developed by Amazon Web Services. That capacity is an estimate. We modeled or inferred it, and no source states it.
- Who is building data centers in Japan?
- The most active developers in Japan by tracked campus count are Amazon Web Services (2 campuses), TSMC (1 campus), Microsoft (1 campus). Every campus page lists its developer, tenant and the source that names them.
Public companies exposed to Japan
These public companies have tracked data-center projects in Japan as developers, tenants, or operators. Use the watchlist to compare them side by side, or click through for capex history and supplier exposure.
- Amazon (AMZN), hyperscaler · 2 projects in Japan
- NVIDIA (NVDA), semiconductor · 2 projects in Japan
- AirTrunk (AIRTRUNK), dc operator · 1 project in Japan
- Equinix (EQIX), dc operator · 1 project in Japan
- Microsoft (MSFT), hyperscaler · 1 project in Japan
- Micron Technology (MU), chip fab · 1 project in Japan
- Oracle (ORCL), hyperscaler · 1 project in Japan
- Taiwan Semiconductor Manufacturing (TSM), chip fab · 1 project in Japan
Other data center markets
Other tracked countries, ranked by pipeline capacity:
- Germany data centers, 24 tracked projects, 1.6 GW pipeline
- Finland data centers, 20 tracked projects, 2.5 GW pipeline
- Russia data centers, 15 tracked projects, 212 MW pipeline
- China data centers, 11 tracked projects
- France data centers, 7 tracked projects, 2.3 GW pipeline
- Malaysia data centers, 7 tracked projects, 300 MW pipeline
- Australia data centers, 5 tracked projects, 673 MW pipeline
- Norway data centers, 5 tracked projects, 470 MW pipeline
- Canada data centers, 4 tracked projects, 9.2 GW pipeline
- India data centers, 4 tracked projects, 1.6 GW pipeline