Finland continues to strengthen its position in Europe’s fast-growing digital infrastructure sector. The planned hyperscale data center hub in Lahti represents one of the country’s largest technology infrastructure developments, designed to support rising demand for cloud computing, artificial intelligence, and high-performance data processing services across Europe.
The campus will transform a 98,900 m² former industrial site in Kiveriö into a state-of-the-art facility, beginning with one building delivering a capacity of 50 MW. Once fully complete, the site will scale to 128 MW, making it one of the region’s most powerful data center hubs.
Current Status of the Lahti Data Center Project
The DayOne data center campus in Lahti, Finland, remains in the development phase. Local authorities have approved planning frameworks, while the developer continues detailed design and infrastructure preparation. Construction timelines depend on final permitting, grid connections, and investor commitments for the hyperscale campus.
Across Europe, developers are expanding specialized data infrastructure to support artificial intelligence workloads. Similarly, Polarise is considering a $300M 30MW AI data center in Bavaria, highlighting the growing race to build sovereign AI computing capacity across the continent.
Outlook on the 128 MW DayOne Data Center in Finland
Construction is scheduled to begin in Q3 2025, starting off with site area demolition. DayOne’s €1.2 billion hyperscale data center hub in Lahti will be operational by 2027.
The digital infrastructure company also aims for LEED Gold certification or higher while additionally tapping into Finland’s cold climate through its free-cooling, air-cooled chillers. This also leads to the exploration of ways to reuse excess heat from the data center hub in Lahti’s district heating system.
Also read: Soluna Scales Up Kati 1 Data Center Project in Texas, Leveraging Co-located Wind Farm’s Energy
Project Impact
DataOnes’s billion-dollar investment also echoes its progress to the local communities and Finland to a greater scale.
A €2.5 million Growth Partnership Agreement with the city and LUT Universities will fund Research & Development (R&D), student internships, and faculty collaboration. This is aimed at building talent and aligning university programs with the growing industry needs.
The data center will also generate around 100 skilled jobs and enlist 1,000 construction workers when the phase is at its peak.
Key Quote on the €1.2B DayOne Data Center in Finland
CEO of DataOne, Jamie Khoo, highlighted the strategic investment’s position in a statement following the announcement. “Finland’s reliable, renewable-rich energy, clean climate, skilled workforce, and Lahti’s carbon-neutral vision make this investment a perfect fit for our sustainable digital infrastructure goals.”, Jamie said.
This investment underscores Finland’s draw as a green computing hub while expanding DayOne’s international portfolio. The 1.3 billion, 128 MW data center hub also offers a glimpse into scalable, resource-efficient digital infrastructure for the future.
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Project Fact Sheet
Project Name: DayOne Hyperscale Data Center Campus
Location: Lahti, Finland
Developer: DayOne Data Centers
Project Type: Hyperscale Data Center Campus
Estimated Investment: €1.2 billion (≈ $1.3 billion)
Initial Capacity: 50MW
Planned Expansion Capacity: Up to 128MW
Project Site: Former industrial land near Lahti logistics and energy infrastructure
Energy Strategy: Renewable electricity with advanced cooling systems
Primary Function: Cloud services, AI workloads, and hyperscale computing
Target Users: Hyperscale cloud providers and enterprise AI users
Project Status: Planning and development phase
Project Team
Developer
- DayOne Data Centers – Global hyperscale data center developer focused on sustainable digital infrastructure.
Local Authorities
- City of Lahti – Municipal government supporting land use planning and infrastructure approvals.
- Energy and Infrastructure Stakeholders
- Fingrid Oyj – Finnish national electricity transmission operator responsible for grid connectivity.
- Lahti Energia – Local energy utility supporting district heating and power systems.
Potential Technology Tenants
- Hyperscale cloud providers
- Artificial intelligence infrastructure operators
- Enterprise cloud computing platforms
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