Microsoft’s underwater data centre idea plumbs the depths in several ways. The idea is to use cold surrounding seawater to dissipate the heat generated. This is of course low-grade heat, but it is perfectly suitable for the heating of buildings, hot water systems, etc, which adds up to a huge amount of energy use worldwide, especially in the colder parts of the world.
A data centre in Helsinki uses the waste heat in this way, heating a group of adjacent buildings. I would be happy to have a data centre in our basement if it meant no more heating bills. There is a fibre optic cable in the street outside, so there is no need for an underwater cable.
What are Microsoft engineers thinking of?
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