# OnZero signs Helsinki data-center heat-reuse agreement with Helen

_Tuesday, September 1, 2026 at 9:14 AM EDT · AI, Infrastructure · Latest · Tier 2 — Notable_

![OnZero signs Helsinki data-center heat-reuse agreement with Helen — DCD](https://media.datacenterdynamics.com/media/images/GettyImages-1968776940.2e16d0ba.fill-1200x630.jpg)

OnZero Finland has signed an agreement with energy company Helen to connect a planned Helsinki AI data center to the city's district-heating network. The facility is expected to supply up to 525,000 MWh of heat annually when operations begin next year, according to the companies. OnZero's design uses liquid-cooled computing infrastructure and heat recovery; it says the captured heat can be delivered at temperatures suitable for district heating.

## Sources

- [DCD](https://www.datacenterdynamics.com/en/news/onzero-partners-with-helen-to-connect-helsinki-ai-data-center-to-district-heating-network/)

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Retrieved: 2026-09-01T16:47:32.989Z
Publisher: Tech & Business (techandbusiness.org)