DayOne Data Centers Plans 560 MW Nurmijärvi Facility, Deepening Investment in Finland’s Digital Infrastructure

DayOne Data Centers has shared an update.

The company announced early-stage plans for a large-scale data center project in Nurmijärvi, Finland. The proposed facility would have a phased development potential of up to 560 MW of grid power. DayOne highlighted that this project builds on its previously announced approximately EUR 1.2 billion investment commitment in Lahti and a joint-venture project in Kouvola with a local partner, underscoring Finland’s status as a core market. The company has entered into a site securing and development agreement with Fortum, Finland’s leading energy producer, under which Fortum will support zoning processes and grid connection planning. At peak, the Nurmijärvi project is expected to employ up to about 1,000 workers during construction, with long-term operations eventually supporting up to 700 skilled positions.

For investors, the announcement signals continued capital deployment by DayOne into Finland’s digital infrastructure, expanding its potential capacity and presence in a strategically important Nordic data center market. A 560 MW phased power capacity indicates an ambition to serve hyperscale and large enterprise clients, which, if successfully commercialized, could materially increase future revenue and cash flow potential. The partnership with Fortum reduces development risk around critical permitting and grid access, which are often key bottlenecks in large data center builds. However, the project is at an early stage, and timelines, total capex, and funding structure have not been disclosed, implying long lead times before any earnings contribution. Overall, the initiative strengthens DayOne’s positioning in European digital infrastructure, potentially enhancing its competitive profile and valuation over the medium to long term, while also increasing its exposure to execution, regulatory, and power-market risks in Finland.