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Finland / Site

Verne Mäntsälä Kapuli campus

Under Construction

Verne is developing a data-center campus in Kapuli, Mäntsälä, Finland. Construction start was announced on 17 June 2026 for an initial 70 MW, without specifying IT, facility or grid power. Municipal permit records identify property 505-407-7-137. Renewable electricity and local heat reuse are intended features; operation has not been established.

Last researched 2026-10-07Last verified Not independently verifiedPublished revision 1
No approved site photo yet. Photos and their source dates are published after evidence review.

Site profile

Operator
Verne
Ownership
Unknown / not established
Business model / scale
Colocation / Unknown
Region / metro
Uusimaa / Unknown
City / locality
Mäntsälä
Address
Gneissitie, Kapuli, Mäntsälä, Finland
Location
Property identified through Kapuli/Gneissitie municipal permit evidence; no corroborated geographic point. Committee record uses Gneissitie 3 while its permit attachment uses Gneissitie 1.
Precision: unknown
Parent
Not assigned

Capacity evidence

Statements retain their dates, definitions and development scope. Do not add these rows together.

Claim / measurementScope and statusAs ofEvidence and accounting
70 MW
Unspecified power
Initial campus capacity / first construction development
Under Construction · cumulative
2026-06-17Reported claim ↗

Excluded from capacity totals. Announcement-date claim for initial capacity, not measured operating capacity. IT, facility and grid basis are unstated. Do not add to the municipal target or earlier announcement.

70 MW
Unspecified power
Campus capacity target
Planned · unclear
2026-06-17Reported claim ↗

Excluded from capacity totals. Municipal announcement date; describes phased construction and a capacity target. Apparently overlaps the operator’s initial 70 MW; no separate ultimate-campus figure established.

Development timeline

  1. 2024-11-28 · actual_land_transaction

    Kapuli land sale signed

    Municipality reports signing the sale agreement with Kiinteistö Oy Mäntsälän Gneissitie 3 for Verne’s project.

    Supporting source ↗
  2. mid-2025 · planned_construction_start

    Historical construction schedule

    Earlier operator plan anticipated construction beginning mid-2025 and taking two years. The later June 2026 announcement establishes a different reported start; completion timing remains unresolved.

    Supporting source ↗
  3. 2025-05-14 · actual_permit_decision

    Building permit approved

    Committee approved LP-505-2025-00083 for the data center and supporting buildings on property 505-407-7-137.

    Supporting source ↗
  4. 2026-06-17 · announcement_construction_start

    Construction start marked by foundation ceremony

    Operator and municipality announced construction starting on the campus; no commissioning was reported.

    Supporting source ↗

Disclosed specifications

Campus land area

Approximately 10 hectares

Operator campus description; permit attachment specifies 9.8521 hectares for property 505-407-7-137.

Source ↗

Permitted development area

20,217 m² floor area; 20,377 m² total area

Proposed development in preview-labelled permit attachment; not an as-built measurement.

Source ↗

Main data-center building floor area

14,389 m²

RAK1 in permit attachment; distinct from campus land and total development area.

Source ↗

Energy intention

100% renewable electricity

Planned operating feature; sourcing contracts and actual consumption not established.

Source ↗

Heat reuse intention

Local community heating / district heating

Municipality qualifies implementation as subject to feasibility; no completed connection established.

Source ↗

Target workloads

AI, HPC and machine learning

Operator development rationale; named tenants are not disclosed in reviewed sources.

Source ↗

Project property company

Kiinteistö Oy Mäntsälän Gneissitie 3

Named land purchaser and permit applicant. Current registered ownership was not independently established.

Source ↗

Sources and references

Source attribution does not imply independent verification or permission to reuse images.

LP-505-2025-00083 building permit attachment ↗

Published 2025-05-14 · Retrieved 2026-10-07

Preview-labelled attachment names the same property and applicant, but gives Gneissitie 1. Reports 9.8521 hectares, 20,217 m² floor area and 20,377 m² total area for the proposed development.

Helsinki-Uusimaa Region ↗

Published Date unavailable · Retrieved 2026-10-07

Regional council lists Mäntsälä among its member municipalities in Finland’s Helsinki-Uusimaa region.

Verne unveils plans for sustainable data center campus in Finland ↗

Published Date unavailable · Retrieved 2026-10-07

Operator describes site acquisition, initial 70 MW and 10 hectares; historical schedule anticipated mid-2025 construction and two years to complete. Its current Finland index displays a 2026 date, so original publication date is not assigned.

Verne Global – Datakeskushanke Mäntsälässä ↗

Published Date unavailable · Retrieved 2026-10-07

Project legal adviser reports assisting Verne with acquisition of the project property company in autumn 2024 and subsequently the project land, plus permitting and grid matters; describes Ardian ownership of Verne.

Profile field evidence

Name: Verne begins construction of the first 70 MW on its data center campus in Mäntsälä; Vernen datakeskuskampuksen rakentaminen käynnistyi Mäntsälässä

Kind: Verne begins construction of the first 70 MW on its data center campus in Mäntsälä

Country: Verne begins construction of the first 70 MW on its data center campus in Mäntsälä

Region: Helsinki-Uusimaa Region

City: Verne begins construction of the first 70 MW on its data center campus in Mäntsälä; Kuntakehityslautakunta 14.05.2025 §54: Datakeskus ja sähköasema

Address: Kuntakehityslautakunta 14.05.2025 §54: Datakeskus ja sähköasema; LP-505-2025-00083 building permit attachment

Operator: Verne begins construction of the first 70 MW on its data center campus in Mäntsälä

Business Model: Glesys to acquire Verne’s managed private cloud operations and two data centers in Finland

Statuses: Verne begins construction of the first 70 MW on its data center campus in Mäntsälä; Vernen datakeskuskampuksen rakentaminen käynnistyi Mäntsälässä

Summary: Verne begins construction of the first 70 MW on its data center campus in Mäntsälä; Kuntakehityslautakunta 14.05.2025 §54: Datakeskus ja sähköasema; Vernen datakeskuskampuksen rakentaminen käynnistyi Mäntsälässä

Location: Kuntakehityslautakunta 14.05.2025 §54: Datakeskus ja sähköasema; LP-505-2025-00083 building permit attachment

Stable identifier: 35072fdf-d258-4e14-85db-c626f5092e84