Asia
Japan
22 AI supercomputers outside the tracked campuses are in Epoch AI’s list to Jul 2025, with 18,158 H100-equivalents. 13 public cloud regions are live here, from 7 providers. The IEA puts data-centre electricity use at less than 20 TWh in 2024.
- AI campuses
- None tracked
AI supercomputers
Epoch AI · to Jul 2025| Name | Owner | H100e | Status | Since |
|---|---|---|---|---|
| AIST ABCI 3.0 | National Institute of Advanced Industrial Science and Technology (AIST) | 6,128 | Existing | Jan 2025 |
| AIST ABCI-Q | National Institute of Advanced Industrial Science and Technology (AIST) | 2,048 | Existing | Jun 2025 |
| SoftBank CHIE-2 | Softbank | 2,040 | Existing | Oct 2024 |
| SoftBank CHIE-3 | Softbank | 2,040 | Existing | Oct 2024 |
| Sakura's H100s Phase 1 | Sakura Internet | 2,016 | Existing | Jul 2024 |
| JCAHPC Miyabi | Joint Center for Advanced High Performance Computing (JCAHPC) | 1,120 | Existing | Jan 2025 |
| TSUBAME4.0 | Tokyo Institute of Technology | 960 | Existing | Apr 2024 |
| Softbank SuperPOD | Softbank | 646 | Existing | Sep 2023 |
| NEC Corp Japan Supercomputer | NEC Corporation | 293 | Existing | Jul 2023 |
| Japanese Research Institute 2 Supercomputer 1 | Not given | 197 | Existing | Jun 2022 |
| University of Tokyo Wisteria/BDEC-01 (Aquarius) | University of Tokyo | 114 | Existing | Jun 2021 |
| Osaka University SQUID | Osaka University | 106 | Existing | May 2021 |
| JAMSTEC ZettaScaler-2.2 Gyoukou | Japan Agency for Marine-Earth Science and Technology | 81 | Existing (likely) | Nov 2017 |
| Japan Atomic Energy Agency and Quantum and Radiological Science and Technology HPE SGI8600 | Japan Atomic Energy Agency | 69 | Existing | Nov 2020 |
| Preferred Networks MN-2 | Preferred Networks Inc | 65 | Existing | Jul 2019 |
| Nagoya University Flow Type II (Furo) | Nagoya University | 56 | Existing | Jul 2020 |
| Japanese Research Institute 1 Supercomputer 1 | Not given | 53 | Existing | Jun 2019 |
| SAKURA Internet 2019 V100 Supercomputer | Sakura Internet | 49 | Existing | Jun 2019 |
| Center for Advanced Intelligence Project, RIKEN, RAIDEN | RIKEN | 26 | Existing | Jun 2018 |
| GSIC TSUBAME 3.0 | Tokyo Institute of Technology | 23 | Existing | Nov 2017 |
The other 2
| Name | Owner | H100e | Status | Since |
|---|---|---|---|---|
| University of Tsukuba Cygnus | University of Tsukuba | 20 | Existing | Apr 2019 |
| GSIC TSUBAME 2.5 | Tokyo Institute of Technology | 8 | Existing | Jun 2014 |
Cloud regions
7 providers · 13 regionsAWS
- Asia Pacific (Osaka) ap-northeast-3 Osaka Live
- Asia Pacific (Tokyo) ap-northeast-1 Tokyo Live
Microsoft Azure
- Japan East japaneast Tokyo Live
- Japan West japanwest Osaka Live
Google Cloud
- Osaka (asia-northeast2) asia-northeast2 Osaka Live
- Tokyo (asia-northeast1) asia-northeast1 Tokyo Live
Oracle Cloud Infrastructure
- Japan Central (Osaka) ap-osaka-1 Osaka Live
- Japan East (Tokyo) ap-tokyo-1 Tokyo Live
Alibaba Cloud
- Japan (Tokyo) ap-northeast-1 Tokyo Live
Tencent Cloud
- 亚太和中东（东京） ap-tokyo Tokyo Live
- 亚太和中东（大阪） ap-osaka Osaka Live
IBM Cloud
- Osaka ( jp-osa ) jp-osa Osaka Live
- Tokyo ( jp-tok ) jp-tok Tokyo Live
Gas made 29% of the power in Japan
share of generation · Ember · Aug 2025 to Jul 2026Japan World
- Gas 29% against 21% for World
- Coal 29% against 33% for World
- Other fossil 4% against 3% for World
- Nuclear 10% against 9% for World
- Wind 2% against 9% for World
- Solar 11% against 10% for World
- Hydro 7% against 14% for World
- Bio & other 9% against 2% for World
Fossil 62% (−1 pt on a year earlier) · nuclear 10% · renewables 28% · 448 g CO2e per kWh, life cycle · Aug 2025 to Jul 2026. Generation only, without imports. Every country in the registry, side by side.
Data-centre electricity
International Energy AgencyJapan
- 2024 less than 20 TWh · about 2% IEA 2025, p. 58
In Japan, we estimate that data centres account for less than 20 TWh of electricity consumption (about 2% of Japan’s total consumption, on a par with Europe).
- Change, 2024 to 2030 around +15 TWh IEA 2025, p. 64
Consumption increases by around 240 TWh (up 130%) in the United States, compared to the 2024 level (Figure 2.12). In China it increases by around 175 TWh (up 170%). In Europe it grows by more than 45 TWh (up 70%). Japan increases by around 15 TWh (up 80%).
Asia Pacific excluding China, as the IEA defines it
- 2030, base case around 100 TWh IEA 2026, p. 64
Regionally, the Asia Pacific region – excluding China – is projected to consume around 100 TWh for data centres in 2030, which accounts for 11% of future global electricity consumption by data centres.
Sources
Every dataset → Status → Glossary →- Ember, Monthly Electricity Data and Yearly Electricity Data, CC BY 4.0, retrieved 11 Oct 2026. Shares and intensity computed here.
- Epoch AI, Data on GPU clusters, CC BY 4.0, retrieved 16 Oct 2026. Deprecated by Epoch AI; no longer updated.
- Cloud providers, Public region lists of AWS, Microsoft Azure, Google Cloud, Oracle Cloud Infrastructure, Alibaba Cloud, Tencent Cloud, Huawei Cloud, IBM Cloud, CoreWeave, Nebius, Facts from each provider’s public region list, retrieved 11 Oct 2026.
- OpenStreetMap contributors, Nominatim geocoding of cloud region cities, ODbL 1.0, retrieved 11 Oct 2026.
- International Energy Agency, Energy and AI (2025); Key Questions on Energy and AI (2026); Energy and AI in East Asia (2026), CC BY 4.0, retrieved 11 Oct 2026.