How much data centre capacity does Japan have?

DC Atlas tracks 176 data centres in Japan. 1,717 MW is live, 2,834 MW is under construction, 534 MW is planned, for 5,482 MW of total potential at full buildout.

Who are the largest data centre operators in Japan?

53 operators run facilities in Japan. Ada Infrastructure is the largest by total potential, with 6 sites and 729 MW.

Which utilities supply power to data centres in Japan?

TEPCO, Kansai Electric Power and Hokkaido Electric Power serve the most data centre sites in Japan. DC Atlas holds a named power supplier for 98% of the facilities it tracks here.

Japan: 176 sites, 53 operators, 2,834 MW under construction

Back to Facilities

Japan has 176 data centres, 151 operational, across 28 markets, 53 operators, 1,717 MW live, 2,834 MW under construction. Largest by total potential: Ada Infrastructure (6 sites), then AirTrunk.

Map of 165 data centres in Japan

Every Japan site DC Atlas tracks with a position on record, coloured by status.

Open Japan in the ExplorerFilter, compare and search every facility on the live map. Free account, no card.

Japan is one scope of the whole corpus. See every facility DC Atlas tracks on the global data center map.

Embed the Japan data center map

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<iframe src="https://dcatlas.io/en/embed/map?country=japan" title="The Japan data center map by DC Atlas" width="100%" height="520" style="border:1px solid #ddd;border-radius:12px" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>

Customise this embedPick a country, market or operator, narrow it by status and type, set the size, and watch the map update as you choose.Open the embed builder

Live

1,717MW

Under construction

2,834MW

Planned

534MW

Total potential

5,482MW

8% of pipeline modelled

Who supplies the power

98% of the data centres we track in Japan have a named power supplier

TEPCO109sites
Kansai Electric Power48sites
Hokkaido Electric Power2sites
Chubu Electric Power2sites
KEPCO2sites
Kansai Electric Power Group1site

8 further suppliers serve smaller numbers of sites here.

Who is building in Japan

The 10 largest operators here by total potential, of 53 tracked in this country.

Operator	Sites	Live	Total potential
Ada Infrastructure	6	—	729 MW
AirTrunk	3	410 MW	430 MW
EdgeConnex	1	—	350 MW
NTT Global Data Centers	19	150 MW	307 MW
SoftBank Group	2	—	300 MW
Digital Edge DC	16	165 MW	266 MW
Equinix	16	157 MW	157 MW
SoftBank Corp	1	—	150 MW
Digital Realty	7	136 MW	136 MW
IDC Frontier	5	51 MW	121 MW

When Japan was built

1,213 MW of the live capacity here carries a commissioning date — 56% of the operational sites in this country.

Recent activity

38 recorded developments in Japan, the latest on 20 Sept 2026.

18 Aug 2026Lease signed50 MW
Goodman signs 20-year lease with global hyperscaler at Tsukuba Tech Central in Tokyo
Goodman Group has signed a 20-year lease with an unnamed global hyperscale customer for the first 50 MW phase of Tsukuba Tech Central, a planned 1 GW data centre campus in Greater Tokyo. Power will be sourced from TEPCO with dark fibre connections to major interconnection points. The facility is under construction and scheduled to be ready for service in early 2028. Goodman says it is in advanced discussions with customers for subsequent phases at the campus.
3 Aug 2026Partnership
NTT, Tokyu Land and Sakura Internet form consortium for Ishikari data center hub
Three Japanese companies—NTT, Tokyu Land, and Sakura Internet—have formed a consortium to develop Ishikari into a major data center hub.
28 Jul 2026Partnership
Castrol, WOODMAN and iOLETE announce strategic partnership on next-generation liquid cooling for AI data centres
iOLETE (headquartered in Tokyo, with CEO Akira Shinkai) announced a strategic partnership with Castrol and WOODMAN regarding next-generation liquid cooling and liquid immersion solutions for AI data centres.
17 Jul 2026Partnership100 MW
GoodVision AI Partners with AI Storm to Build 100 MW AI Factory in Japan
GoodVision AI announced a strategic partnership with Japan-based AI Storm to develop AI inference infrastructure in Japan, starting with a 2 MW liquid-cooled flagship facility in Fukushima expected operational within three months. The phased expansion roadmap targets 20 MW within 12 months and 100 MW across Japan within three years, supported by 50+ reserved sites in Tokyo and surrounding areas. The partnership combines GoodVision's AI infrastructure capabilities with AI Storm's local market presence and enterprise expertise to serve rising enterprise demand for dedicated AI compute capacity.
13 Jul 2026Interconnection agreed
ITS Communications launches fiber connection service to KDDI Telehouse Shibuya data center
ITS Communications announced July 13 that it has begun offering connection services to KDDI's Telehouse Shibuya data center via optical fiber lines embedded in Tokyo Metro railway infrastructure. The service leverages ITS Communications' fiber optic core rental business along Tokyu railway lines. This interconnection enhances data center accessibility and network redundancy for Tokyo metropolitan area enterprises.
9 Jul 2026Announced
BBIX Opens "BBIX Tokyo 16th Center" at SoftBank Tokyo Fuchu Data Center
BBIX has opened the "BBIX Tokyo 16th Center" within SoftBank's Tokyo Fuchu Data Center. This new facility is located on the 8th floor of the data center.
30 Jun 2026Partnership
DigitalBridge and JEXI form Nippon Gateway Infrastructure data center platform in Japan
DigitalBridge and JEXI have launched Nippon Gateway Infrastructure (NGI), a new data center platform in Japan. NGI's initial portfolio includes data center assets acquired from NEC Corporation in the Greater Tokyo and Greater Osaka regions, with NEC remaining a strategic customer.
13 Mar 2025Commissioned
Tokyo Zenlayer 011 — entered service
Tokyo Zenlayer 011 came into service on 13 March 2025.

All recent activity

Who is hiring in Japan

11 open data centre roles at 1 operator we track

STACK Infrastructure is the only operator recruiting in Japan, with 11 roles open across 6 disciplines. 8 of the 11 are build-side, led by construction at 3. That is the staffing profile of a market putting capacity up rather than running it.

STACK Infrastructure11roles

The mix

construction3
critical facilities2
design and engineering2
project management2
commissioning1
health and safety1

The roles behind those numbers

Most recently opened

STACK Infrastructureproject management9 Jul 2026
STACK Infrastructurecommissioning7 Jul 2026
STACK Infrastructureproject management19 Jun 2026
STACK Infrastructuredesign and engineering19 Jun 2026
STACK Infrastructureconstruction19 Jun 2026

Counted from the operators' own public careers feeds, read daily. A role counts here when the employer runs a data centre we track and the work is operational rather than back office. What these roles involve, and what they pay.

Questions about Japan

How many data centres are there in Japan?: Japan has 176 data centres, 151 operational, across 28 markets, 53 operators, 1,717 MW live, 2,834 MW under construction. Largest by total potential: Ada Infrastructure (6 sites), then AirTrunk.
How much data centre capacity does Japan have?: DC Atlas tracks 176 data centres in Japan. 1,717 MW is live, 2,834 MW is under construction, 534 MW is planned, for 5,482 MW of total potential at full buildout.
Who are the largest data centre operators in Japan?: 53 operators run facilities in Japan. Ada Infrastructure is the largest by total potential, with 6 sites and 729 MW.
Which utilities supply power to data centres in Japan?: TEPCO, Kansai Electric Power and Hokkaido Electric Power serve the most data centre sites in Japan. DC Atlas holds a named power supplier for 98% of the facilities it tracks here.