{"id":"54a987fd-de69-42a8-8460-604b263334e5","slug":"softbank-hokkaido-tomakomai-ai-data-center","name":"SoftBank Hokkaido Tomakomai AI Data Center","aliases":[],"locationId":"8b594284-e3c8-42e5-91e3-d43cb3ef345e","lat":null,"lng":null,"locationPrecision":null,"landStatus":null,"lifecycleState":"under_construction","powerSourceMix":"other","interconnectionQueueStatus":null,"interconnectionQueueId":null,"expectedEnergizationDate":null,"dedicatedSubstation":null,"gridOperator":"other","waterSourceNotes":null,"servingUtility":null,"acreage":173,"totalBuildingSqft":null,"streetAddress":null,"notes":"SoftBank and subsidiary IDC Frontier broke ground on a 700,000 sqm AI data center campus in Tomakomai on April 15, 2025; a 50MW first phase targets fiscal 2026 with ultimate capacity expected to exceed 300MW, powered entirely by renewable energy sourced within Hokkaido.","keyFacts":[{"label":"Groundbreaking Apr 15 2025 / SoftBank + IDC Frontier (primary)","value":"On April 15, 2025, SoftBank Corp. and subsidiary IDC Frontier held a groundbreaking ceremony for the Hokkaido Tomakomai AI Data Center in Tomakomai City, Hokkaido. SoftBank frames the campus as a core facility for its Brain DataCenter concept under a next-generation social infrastructure push to decentralize data processing and energy use away from Tokyo/Osaka concentration ([SoftBank News, May 1 2025](https://www.softbank.jp/en/sbnews/entry/20250501_01); [IDC Frontier, Apr 18 2025](https://www.idcf.jp/news/topics/20250418001))","sourceUrl":"https://www.softbank.jp/en/sbnews/entry/20250501_01"},{"label":"700,000 sqm / >300 MW design / FY2026 ops (primary)","value":"SoftBank states the Tomakomai campus is expected to become one of Japan's largest AI data centers, with an area of 700,000 square meters and power capacity expected to exceed 300 megawatts, scheduled to begin operations in fiscal 2026 (year ending March 2027). Treat the >300 MW figure as SoftBank's stated design/expansion outlook, not as currently energized IT load ([SoftBank News, May 1 2025](https://www.softbank.jp/en/sbnews/entry/20250501_01); [SoftBank News, Feb 25 2026](https://www.softbank.jp/en/sbnews/entry/20260225_01))","sourceUrl":"https://www.softbank.jp/en/sbnews/entry/20250501_01"},{"label":"100% Hokkaido renewable / local offtake (primary)","value":"SoftBank and IDC Frontier describe the facility as designed to operate entirely on renewable energy procured locally within Hokkaido Prefecture (company framing: local-production / local-consumption renewable power for the AI campus) ([SoftBank News, May 1 2025](https://www.softbank.jp/en/sbnews/entry/20250501_01); [IDC Frontier, Apr 18 2025](https://www.idcf.jp/news/topics/20250418001))","sourceUrl":"https://www.softbank.jp/en/sbnews/entry/20250501_01"},{"label":"Construction progress / METI subsidy framing (primary)","value":"In a Feb 25, 2026 SoftBank News interview, SoftBank DC engineering staff said plans advanced since around 2023 and estimated the project about 60 to 70 percent complete toward a fiscal 2026 opening, noting a METI subsidy and ecological surveys during construction. Treat the percent-complete figure as SoftBank staff characterization at interview time ([SoftBank News, Feb 25 2026](https://www.softbank.jp/en/sbnews/entry/20260225_01))","sourceUrl":"https://www.softbank.jp/en/sbnews/entry/20260225_01"}],"reviewStatus":"reviewed","sources":[{"url":"https://www.softbank.jp/en/sbnews/entry/20250501_01","title":"Laying the Foundation for the AI Era: Construction Begins on 'Hokkaido Tomakomai AI Data Center' - SoftBank News"},{"url":"https://w.media/softbank-breaks-ground-for-ai-data-center-in-hokkaido/","title":"SoftBank breaks ground for AI data center in Hokkaido - w.media"},{"url":"https://www.softbank.jp/en/sbnews/entry/20260225_01","date":"2026-02-25","title":"Building for the AI Era: An Inside Look at SoftBank Corp.'s Next-generation AI Data Center in Hokkaido","publisher":"SoftBank News"},{"url":"https://www.idcf.jp/news/topics/20250418001","date":"2025-04-18","title":"Hokkaido Tomakomai Data Center groundbreaking ceremony held","publisher":"IDC Frontier"}],"reviewNote":null,"createdAt":"2026-08-19T00:50:14.303Z","updatedAt":"2026-09-28T13:43:05.881Z","location":{"id":"8b594284-e3c8-42e5-91e3-d43cb3ef345e","name":"Tomakomai","slug":"tomakomai-hokkaido","kind":"city","parentLocationId":"f8170967-3db3-4492-8904-9c43bbe67d09","region":null,"lat":null,"lng":null,"reviewStatus":"reviewed","aliases":[],"collisionRisk":"high","reviewNote":null,"createdAt":"2026-08-19T00:50:13.921Z","updatedAt":"2026-08-21T03:20:12.226Z"},"parties":[{"id":"66a12af3-87a9-4370-948e-75bc5bd09c39","dataCenterId":"54a987fd-de69-42a8-8460-604b263334e5","companyId":null,"externalName":"SoftBank Corp.","role":"developer","structureNotes":null,"createdAt":"2026-08-19T00:50:18.742Z","company":null},{"id":"370e28ad-c887-4820-adaf-a1dffc7b0a31","dataCenterId":"54a987fd-de69-42a8-8460-604b263334e5","companyId":null,"externalName":"IDC Frontier Inc.","role":"operator","structureNotes":"SoftBank subsidiary","createdAt":"2026-08-19T00:50:19.970Z","company":null},{"id":"cf8b8e30-bdd9-4b9a-b223-1458631335a7","dataCenterId":"54a987fd-de69-42a8-8460-604b263334e5","companyId":null,"externalName":"Japan Ministry of Economy, Trade and Industry (METI)","role":"financier","structureNotes":"Subsidy of up to ¥30 billion","createdAt":"2026-08-19T00:50:21.120Z","company":null}],"capacityClaims":[{"id":"f66260be-7976-4004-97be-c7e9eabf4b46","dataCenterId":"54a987fd-de69-42a8-8460-604b263334e5","series":"announced","valueGw":0.3,"asOf":"2025-06-01T00:00:00.000Z","sourceUrl":"https://www.softbank.jp/en/sbnews/entry/20250501_01","sourceType":"press_release","evidenceTier":"claimed","supersedesId":null,"note":"Ultimate capacity 'expected to exceed 300 megawatts' per SoftBank","createdAt":"2026-08-19T00:50:15.369Z"},{"id":"11589353-b20b-4823-8d8d-46e302998f54","dataCenterId":"54a987fd-de69-42a8-8460-604b263334e5","series":"under_construction","valueGw":0.05,"asOf":"2025-06-01T00:00:00.000Z","sourceUrl":"https://w.media/softbank-breaks-ground-for-ai-data-center-in-hokkaido/","sourceType":"journalist_report","evidenceTier":"reported","supersedesId":null,"note":"First phase (50MW), completion targeted 2026","createdAt":"2026-08-19T00:50:16.229Z"}],"financialClaims":[{"id":"22e9c2de-f9e2-41de-ba34-5311402f6cee","dataCenterId":"54a987fd-de69-42a8-8460-604b263334e5","kind":"capex","label":"Total project investment (~¥65 billion)","valueUsd":"456000000","capUsd":null,"conditions":null,"asOf":"2025-06-01T00:00:00.000Z","sourceUrl":"https://w.media/softbank-breaks-ground-for-ai-data-center-in-hokkaido/","sourceType":"journalist_report","evidenceTier":"reported","createdAt":"2026-08-19T00:50:16.766Z"},{"id":"500c077a-147b-49a8-b1bc-f3bf03b679b0","dataCenterId":"54a987fd-de69-42a8-8460-604b263334e5","kind":"incentive","label":"Japan METI subsidy (up to ¥30 billion)","valueUsd":null,"capUsd":"210000000","conditions":"Ministry of Economy, Trade and Industry subsidy","asOf":"2025-06-01T00:00:00.000Z","sourceUrl":"https://w.media/softbank-breaks-ground-for-ai-data-center-in-hokkaido/","sourceType":"journalist_report","evidenceTier":"reported","createdAt":"2026-08-19T00:50:17.526Z"},{"id":"f354a0ec-5428-4657-937a-149876c0afb5","dataCenterId":"54a987fd-de69-42a8-8460-604b263334e5","kind":"capex","label":"First-phase project cost (~65B yen)","valueUsd":"455800000","capUsd":null,"conditions":"Approx. 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