{"id":"f43e49aa-29b8-4055-b42f-525cda039aeb","name":"Mitsui Fudosan","slug":"mitsui-fudosan","description":"Japanese real estate developer building data centers, including an underground data center in a former Kobe belt conveyor tunnel with Kumagai Gumi and Getworks.","status":"public","founded":null,"hq":null,"hqLat":null,"hqLng":null,"hqGeocodedAt":null,"hqAddress":null,"hqPrecision":null,"website":"https://www.mitsuifudosan.co.jp","fundingTotal":null,"type":"infrastructure","roles":[],"reviewStatus":"reviewed","heatIndex":0,"lifecycleState":"active","supersededByCompanyId":null,"sources":[{"url":"https://www.mitsuifudosan.co.jp/corporate/news/2026/1006/","title":"Japan's first underground data center using an existing tunnel, Kobe; operation planned from end of 2027 (Japanese)","sourceName":"Mitsui Fudosan, Kumagai Gumi and Getworks","publishedAt":"2026-10-06"},{"url":"https://www.kumagaigumi.co.jp/news/2026/pr-20261006-004372.html","title":"Underground data center using an existing tunnel (Japanese)","sourceName":"Kumagai Gumi","publishedAt":"2026-10-06"},{"url":"https://asia.nikkei.com/business/technology/artificial-intelligence/mitsui-fudosan-to-build-data-center-in-abandoned-tunnel-in-japan","title":"Mitsui Fudosan to build data center in abandoned tunnel in Japan","sourceName":"Nikkei Asia","publishedAt":"2026-10-06"},{"url":"https://x.com/OddlyTrueJp/status/2107501329081880676","title":"X post on Kobe tunnel data center","sourceName":"X/@OddlyTrueJp","publishedAt":"2026-10-06"}],"keyFacts":[{"label":"Kobe tunnel data center (company-stated, Oct 2026)","value":"On Oct 6 2026, with Kumagai Gumi and Getworks, announced what they call Japan's first commercial data center in an existing tunnel."},{"label":"Kobe site","value":"About 3 km (about 17,000 sq m) of a 14.5 km former belt conveyor tunnel that Kobe city used until Sep 2005 to haul fill."},{"label":"Tunnel conditions","value":"Mostly deeper than about 40 m, and confirmed at 15 C to 20 C year-round."},{"label":"Lease tender","value":"Mitsui Fudosan and Kumagai Gumi won the conditional lease tender on Sep 4 2026."},{"label":"Kobe capacity and timing (company-stated)","value":"Getworks containers with groundwater-circulating water cooling, targeting up to 20 MW; initial service planned for late 2027."},{"label":"Kobe roles","value":"Kumagai Gumi is the planned builder and Getworks the container operator."},{"label":"Replication plan (company-stated)","value":"Aims to repeat the model in other idle tunnels and mine sites."}],"aliases":["Mitsui Fudosan Co., Ltd."],"collisionRisk":"low","reviewNote":null,"atsProvider":null,"atsSlug":null,"factoryLocations":null,"manufacturingCapacity":null,"orgType":null,"burnSignal":null,"litigationEvents":null,"insurancePostureDisclosed":null,"unitEconomicsDisclosed":null,"tickerSymbol":null,"stockExchange":null,"secCik":null,"revenueUsd":null,"revenueBasis":null,"revenueAsOf":null,"employeeCount":null,"employeeCountBasis":null,"employeeCountAsOf":null,"marketCapUsd":null,"marketCapAsOf":null,"marketCapSource":null,"createdAt":"2026-10-08T01:56:36.552Z","updatedAt":"2026-10-10T21:04:06.007Z","jsonLd":{"@context":"https://schema.org","@type":"Organization","@id":"https://registry.deploy.report/companies/mitsui-fudosan","url":"https://registry.deploy.report/companies/mitsui-fudosan","name":"Mitsui Fudosan","alternateName":["Mitsui Fudosan Co., Ltd."],"description":"Japanese real estate developer building data centers, including an underground data center in a former Kobe belt conveyor tunnel with Kumagai Gumi and Getworks.","identifier":"f43e49aa-29b8-4055-b42f-525cda039aeb","publisher":{"@id":"https://deploy.report/#organization"}},"framework_metadata":{"framework_schema_version":"0.1.0","verification_status":"verified","maturity_stage":null,"lifecycle_state":null,"architectural_position":{"cohort":null,"sub_cohorts":[]},"within_cohort_verified_vs_claimed_pair":null,"cap_flags":[],"verification_depth":{"sources_count":4,"primary_source_types":[]}}}