The partnership will see Telehouse West save up to 1,110 tonnes of CO2 emissions per annum and provide up to nine megawatts of power for the local neighbourhood. The energy savings will equate to boiling 3,000 kettles continuously. The disposal of waste heat from cooling systems is one of the most significant sustainability issues associated with data storage. This will be the first time a heat export strategy has been introduced in the UK for this type of data centre facility.
In fact, I seem to recall a discussion about this on here a couple of months ago about yet another project doing the same thing. The consensus was that whilst there was a lot of air pumped out, it wasn't exactly hot & it wasn't useful for much more than good PR for the host - far better efficiencies could have been made, spending the money elsewhere. (This statement brought to you by Slashdot whispers of an oriental nature.)