Slight Economist article on the energy demands of cloud computing…

AS ONE industry falls, another rises. The banks of the Columbia River in Oregon used to be lined with aluminium smelters. Now they are starting to house what might, for want of a better phrase, be called data smelters. The largest has been installed by Google in a city called The Dalles. Microsoft and Yahoo! are not far behind. Google’s plant consumes as much power as a town of 200,000 people. And that is why it is there in the first place. The cheap hydroelectricity provided by the Columbia River, which once split apart aluminium oxide in order to supply the world with soft-drinks cans and milk-bottle tops, is now being used to shuffle and store masses of information. Computing is an energy-intensive industry. And the world’s biggest internet companies are huge energy consumers—so big that they are contemplating some serious re-engineering in order to curb their demand…

Strangely, it makes no mention of virtualisation.