"Partnering with other companies, Amazon will use waste heat
from a data center in a Seattle skyscraper to warm its
soaring new Denny Triangle campus across the street."
Helsinki data centre to heat homes
"A mini revolution in eco-friendly computing is taking place
in the depths of the 19th-century Orthodox Uspenski
Cathedral in downtown Helsinki."
"The Finnish IT company Academica has installed a new 2MW
database server centre in an empty second world war bomb
shelter meant to protect city officials in the event of a
Russian attack. Water warmed while cooling the servers will
go on to provide heat for 500 homes or 1,000 flats in a city
that often suffers winters of -20C. After the heat is
extracted, the water will be recycled back to cool the
servers again."