SmartPlanet: Underground data center will save $561K, heat homes in Helsinki

SMARTPLANET -- The Finnish capital of Helsinki is preparing to house what may be the greenest data center on the planet.

Hidden deep within the bedrock of a massive cave underneath popular orthodox Christian landmark Uspenski Cathedral, the planned data center -- which will be comprised of hundreds of computer servers -- is expected to emit substantial amounts of heat.

That heat will then be captured and channeled into the city's district heating network, a system of water-heated pipes that are used to warm homes in the city.

Read more on SmartPlanet's Smart Takes blog.