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Microsoft data centre set to provide surplus heating for 6.000 Danish homes

Through a new partnership project with VEKS and HTF, the excess heat generated by the data centre will be redirected to benefit the surrounding community. The data centre, currently under construction, will generate enough heat to warm upwards of 6,000 local households. 
The site will be one of the first locations where Microsoft integrates technology for recovering waste heat in its data centres. This is made possible due to the proximity to existing waste heat recovery infrastructure and residential areas in Høje-Taastrup, as well as the collaborative partnership with VEKS, a leading district heating company in the region.
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“There is significant potential for surplus heat from data centres in the capital region. This agreement represents a concrete contribution to VEKS' commitment to even more environmentally friendly and sustainable district heating in the future - at an attractive price significantly below what VEKS would otherwise pay for heat.”
Steen Christiansen Chairman, VEKS

For Microsoft, the project showcases a commitment to responsible data centre operations prioritising sustainability. The company's pledge to achieve 100% renewable energy operations, including their data centres, by 2025 reflects a shared goal for environmental sustainability and a more energy-efficient future.

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“Our data centres aspire to be among the world's most sustainable. We have made significant investments in energy efficiency as part of establishing our data centres in Denmark. The agreement with VEKS is a crucial step towards creating an environmentally conscious Danish data centre region, where recycled surplus heat benefits both citizens and the environment.”
Mikael Mikkelsen Datacenter Commercial Lead at Microsoft Denmark

The technology

Incorporating sustainable solutions, surplus heat will be harnessed within the data centre through an air-to-liquid heat exchanger. This heat will then be transferred as heated water to the local district heating network via a network of pipes.

To further optimize its usability, heat pumps, installed by VEKS, will elevate the temperature of the heat. Subsequently, a heat exchanger, in conjunction with underground pipes, will facilitate the distribution of this heat to homes and businesses within the community connected to this innovative system.

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“Heat utilization and integration between the data center and district heating is a really good solution for everyone. Invest in Denmark is pleased to have helped to facilitated the initial dialogue between the partners.” 
Jørn Thorgaard Special advisor, Invest in Denmark

VEKS and Microsoft anticipate the initial deliveries to residents during the winter months of 2025-2026.

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