Finland / Site
XTX Markets is developing a campus for its own machine-learning computing in Kajaani. The first building was announced with 22.5 MW IT capacity and planned 2026 operation; operation has not been established. September 2026 evidence confirms third-building construction progress. Additional buildings remain part of the announced five-building plan.
Statements retain their dates, definitions and development scope. Do not add these rows together.
| Claim / measurement | Scope and status | As of | Evidence and accounting |
|---|---|---|---|
| 22.5 MW IT load | First campus building, three data halls combined Under Construction · cumulative | 2025-01-22 | Reported claim ↗ Excluded from capacity totals. As_of is operator announcement date. Design IT capacity, not measured operation or ultimate campus capacity; independently repeated by the construction consultant. |
| 250 MW Unspecified power | Intended Kajaani campus expansion Planned · cumulative | 2025-04-16 | Reported claim ↗ Excluded from capacity totals. As_of is Yle publication date. Report attributes expansion plans to the country head; IT versus facility/grid basis is not established. Expansion depends on transmission development. |
| 250 MW Unspecified power | Five-building Kajaani development Planned · cumulative | 2025-06-10 | Reported claim ↗ Excluded from capacity totals. As_of is regional report date. Report calls the project under construction but does not show all 250 MW built or operational; ultimate figure retained as planned and overlaps c2. |
Operator announced investment above €1 billion, first-building construction and intention to pursue four additional buildings.
Supporting source ↗Original target for first-building operation; achievement remains unconfirmed.
Supporting source ↗YIT reported fit-out and building-services work underway after structural completion.
Supporting source ↗Expected completion reported by YIT; not an actual commissioning date.
Supporting source ↗YIT announced agreement and planned summer 2026 construction start.
Supporting source ↗YIT reported successful shell-and-core completion and signed fit-out, MEP and commissioning agreement.
Supporting source ↗Latest construction phase scheduled to start in late 2026.
Supporting source ↗Operator-reported owned campus site area; legal subsidiary and cadastral extent unresolved.
Source ↗Announced design configuration.
Source ↗Operator design claim, without operating measurements or detailed cooling architecture.
Source ↗Intent only; no commissioned heat-delivery scheme established.
Source ↗Eltel contractor scope; June 2026 completion was a target in the presentation, not verified achievement. Voltage is not MW capacity.
Source ↗Government EIA describes pending route alternatives; not an energized connection or a disclosed MW allocation.
Source ↗Roles supported by dated project announcements; contractors are not site operators.
Source ↗Source attribution does not imply independent verification or permission to reuse images.
Published 2025-01-22 · Retrieved 2026-10-07
Operator announcement identifies its Kajaani property, own-compute purpose, first-building IT capacity and five-building development intention.
Published 2025-01-22 · Retrieved 2026-10-07
Municipal publication reproduces the operator announcement and links to the original release.
Published 2026-09-25 · Retrieved 2026-10-07
Third-building shell and core completed; fit-out, MEP and commissioning contract signed, with latest phase scheduled for late 2026.
Published 2026-03-18 · Retrieved 2026-10-07
Second-building fit-out underway after structure and envelope completion; facility completion expected in 2027.
Published 2026-06-17 · Retrieved 2026-10-07
Third-building shell-and-core agreement; construction scheduled to begin in summer 2026.
Published 2026-05-13 · Retrieved 2026-10-07
Government EIA page, updated 2026-08-10, locates the data center at Tihisenniemi and describes a proposed approximately 30 km 400 kV connection toward Otanmäki.
Published Date unavailable · Retrieved 2026-10-07
Regional Council explicitly lists Kajaani among Kainuu’s eight municipalities; displayed update date is 2023-12-05.
Published 2025-04-16 · Retrieved 2026-10-07
Yle reports a planned 250 MW development and expansion dependence on transmission capacity, quoting the Finland country head. Caption identifies five-building rendering at Tihisenniemi.
Published Date unavailable · Retrieved 2026-10-07
Slide 19 labels Kajaani project 250 MW, describes five buildings, but separately states 2.5 MW IT power without a clear scope; also describes 110 kV cabling and fiber work.
Published 2025-06-10 · Retrieved 2026-10-07
Regional Council report, page 11, describes XTX’s 250 MW project, five centers and first-part completion planned for 2026.
Published 2025-01-29 · Retrieved 2026-10-07
Construction consultant confirms three data halls totaling 22.5 MW IT, 15,000 square meters and intended 2026 operation.
Published 2026-06-25 · Retrieved 2026-10-07
First-building electrical installations completed; second-building electrical work underway, with project completion expected in 2027. Electrical completion does not establish operation.
Published 2024-04-11 · Retrieved 2026-10-07
Reporting and site-sign/map captions place XTX’s data-center property along Sokajärventie, on the former proposed pulp-mill plot beside the Kajaani River.
Published 2024-11-15 · Retrieved 2026-10-07
Municipal decision dated 2024-11-11 reserves Sokajärventie 29 for meeting, training and sauna facilities; it does not establish the data-center address.
Name: XTX Markets plans to invest over €1bn in large-scale data centre project in Finland; XTX Markets plans to invest over €1bn in large-scale data centre project in Kajaani, Finland
Kind: XTX Markets plans to invest over €1bn in large-scale data centre project in Finland; YIT continues the construction of XTX Markets’ data center campus in Kajaani - delivers the fit-out and MEP works for the third data center
Country: XTX Markets plans to invest over €1bn in large-scale data centre project in Finland; XTX Markets plans to invest over €1bn in large-scale data centre project in Kajaani, Finland
Region: National and International Cooperation
City: XTX Markets plans to invest over €1bn in large-scale data centre project in Finland; XTX Markets, Suksisuo - Vuottolahti 400 kV voimajohtohanke, Kajaani
Operator: XTX Markets plans to invest over €1bn in large-scale data centre project in Finland; YIT and XTX Markets agree on interior finishing and building services contract for the second data center building in Kajaani
Owner: XTX Markets plans to invest over €1bn in large-scale data centre project in Finland
Business Model: XTX Markets plans to invest over €1bn in large-scale data centre project in Finland
Statuses: XTX Markets plans to invest over €1bn in large-scale data centre project in Finland; YIT continues the construction of XTX Markets’ data center campus in Kajaani - delivers the fit-out and MEP works for the third data center; YIT and XTX Markets agree on interior finishing and building services contract for the second data center building in Kajaani
Summary: XTX Markets plans to invest over €1bn in large-scale data centre project in Finland; YIT continues the construction of XTX Markets’ data center campus in Kajaani - delivers the fit-out and MEP works for the third data center; YIT and XTX Markets agree on interior finishing and building services contract for the second data center building in Kajaani; AINS Group supports XTX Markets in its data center project
Location: XTX Markets, Suksisuo - Vuottolahti 400 kV voimajohtohanke, Kajaani; Kajaaniin tulee datakeskus, jonka taustayhtiön perustaja on Iso-Britannian suurin veronmaksaja
Stable identifier: 16c613b5-103d-407c-9a59-b4fe3560e6ec