Site · Shared context
Microsoft Kirkkonummi Kolabacken Data Center Campus
Under construction · Kirkkonummi / Masala, Uusimaa, Finland
Shared participant: Fortum OyjShared participant: MicrosoftSame market: Uusimaa, Finland
All records
Data center siteSite record
Microsoft Espoo Hepokorpi Data Center Campus
Espoo / Hepokorpi, Uusimaa, FinlandUnder construction
Capacity
—
No public figure
Lead participant
Microsoft
Developer
Last updated
Aug 24, 2026
Most recent public record update
About Microsoft Espoo Hepokorpi Data Center Campus
Microsoft Espoo Hepokorpi Data Center Campus is in Espoo / Hepokorpi, Uusimaa, FI and is a data center campus with under construction status. Participants include Microsoft Corporation as developer, Fortum Oyj as infrastructure operator. Development comprises Initial campus construction (under construction). Key milestones include Campus construction began. (2024-09-01) and Second-building construction announced as starting. (2026-05-01). waste heat recovery: Fortum heat pumps recover data center waste heat for district heating; data center heat integration begins in phases from 2027.
Program relationships
1 linkedRelated projects
Projects sharing a market, utility, or organization.
Site · Shared context
Microsoft Vihti Palojarvi Data Center Campus
Under construction · Vihti / Palojarvi, Uusimaa, Finland
Shared participant: MicrosoftSame market: Uusimaa, Finland
Capacity
Operating capacity—An operating IT-capacity figure has not been publicly disclosed.
No additional capacity claims are published.
Development
1 phases · 2 milestonesInitial campus constructionUnder Construction
Construction began in September 2024; later Microsoft updates identify a second building start.
Sep 1, 2024
Campus construction began
CompletedMay 1, 2026
Second-building construction announced as starting
CompletedInfrastructure
Heat ReusePartially Operational
Fortum heat pumps recover data center waste heat for district heating; data center heat integration begins in phases from 2027.
Project map
0 of 1 project point mappedInfrastructure facts
1
Mapped records
1
Capacity figures
0
No map point available
Cooling & water: 1
Facts & sources
Published claims and their source links.
Construction Start2024-09 monthActual
2024-09 month
FortumFortum has started heat production at two large data-centre sitesVihti BusinessMicrosoft to begin second construction phase in Vihti during 2026FortumFortum to invest approximately EUR225 million in waste-heat projectsMicrosoft LocalMicrosoft Finland datacenter community hubMicrosoft LocalEspoo datacenter project overviewMicrosoft LocalVihti datacenter project overview
Second Building Start Reported2026-05 monthActual
2026-05 month