Observed Signal · Mar 18, 2026 · Partnership · Source: Trending Topics · Impact: 2/5 · Sentiment: Positive
OnZero to Supply AI Compute Heat to Helsinki's District Heating
Austrian company OnZero, originally from the crypto mining sector, has signed an agreement with Finnish utility Helen Oy to supply recovered waste heat from AI data centers to Helsinki's district heating network. The 'AI Heat Factory' will provide up to 525,000 MWh of heat per year, enough for about 70,000 apartments. Using liquid cooling, OnZero aims to recover 99% of compute heat, with zero water consumption. The facility is expected to start operations next year. OnZero, which operates two existing sites in Finland, sees the project as a reference for expansion across Europe. The deal highlights the growing interconnection between AI infrastructure and sustainable energy use.
Highlights growing interconnection between AI compute and sustainable energy, relevant for the infrastructure supporting adtech's AI-driven operations, but not directly impacting adtech market.
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Key Takeaways & Evidence Grounding
- OnZero Finland Oy signed an agreement with Helen Oy to supply recovered AI compute heat to Helsinki's district heating network.
- The facility will deliver up to 525,000 MWh of heat per year, covering the needs of around 70,000 apartments.
- OnZero uses liquid cooling to recover up to 99% of waste heat, with zero water consumption.
- The plant is expected to be operational next year (2027).
- OnZero currently operates two sites in Finland (Kemijärvi and Kerava), delivering about 30,700 MWh of heat so far.
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1 Entity mapped“hat unter anderem Verträge mit Equinix geschlossen...”
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