Energy Efficiency Helsinki

Published on March 14th, 2010 | by Susan Kraemer

7

Data Center Under Helsinki to Warm Residents Above

March 14th, 2010 by  

Helsinki is pioneering the worlds most advanced municipal heating system. A century ago, New York City put in an early form of this kind of district heating: the steam that gasps from ancient downtown loft radiators in the middle of winter nights is the remaining evidence.

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But that was before the computer age. A new twist on district heating is being pioneered by Finland in its capital city, Helsinki.

Excess heat from hundreds of computer servers in a new underground data center will be captured and pumped to heat hundreds of homes and businesses throughout the city.

Like many European cities, (how do you think they achieved their 13% below 1990 levels of greenhouse gases) Helsinki already uses district heating so its residents don’t risk freezing to death in its minus 30 Centigrade winters.

Water is heated centrally at combined heat and power (CHP) plants that supply both electricity and heat, to heat water to 115 degrees C, and pipe it directly to tens of thousands of nearby apartments and public buildings.

But now, data centers comprise a new and growing opportunity for a lucrative new green business development there, as more and more data is stored and backed-up several times online. Globally,  greenhouse gas emissions from data centers powered by fossil fuels are rising by 10% a year.

With the rise of cloud computing, more energy is needed to cool data centers, and more heat created by them must be siphoned off. At this point, in the UK for example,  cloud computing now uses 3% of all the electricity generated in Britain.

Beginning this April, a pilot program will be fueled by waste heat generated by the Academica data center under the city. The data center will be cooled using seawater from the Baltic, which falls below 8C from November to May, with the excess heat pumped back into the city’s district heating system.

Image: Tuija

Source: Business Times

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About the Author

writes at CleanTechnica, CSP-Today and Renewable Energy World.  She has also been published at Wind Energy Update, Solar Plaza, Earthtechling PV-Insider , and GreenProphet, Ecoseed, NRDC OnEarth, MatterNetwork, Celsius, EnergyNow, and Scientific American. As a former serial entrepreneur in product design, Susan brings an innovator's perspective on inventing a carbon-constrained civilization: If necessity is the mother of invention, solving climate change is the mother of all necessities! As a lover of history and sci-fi, she enjoys chronicling the strange future we are creating in these interesting times.    Follow Susan on Twitter @dotcommodity.



  • Great idea. I vaguely recollect hearing that something like this has been done in the U.S., too. By Google? (Or am I just imagining that? Perhaps they only came up with a novel way of cooling their server farms, but not using the excess heat.)

  • Great idea. I vaguely recollect hearing that something like this has been done in the U.S., too. By Google? (Or am I just imagining that? Perhaps they only came up with a novel way of cooling their server farms, but not using the excess heat.)

  • Thanks for the interesting perspective. I enjoyed your post and look forward to more in the future.

  • Thanks for the interesting perspective. I enjoyed your post and look forward to more in the future.

  • Frank Hanlan

    This strikes me as a very limited opportunity but may be a great use of some of those bunkers left over from the cold war. My guess, however, is that they were located away from population centers.

  • Frank Hanlan

    This strikes me as a very limited opportunity but may be a great use of some of those bunkers left over from the cold war. My guess, however, is that they were located away from population centers.

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