Last month’s report by Digital Power Group into the
electricity used by ICT systems states that global internet, data and cloud
systems consume 1500 TW of electricity annually. This is equal to the combined
generation of Japan and Germany. The report notes that coal is the world’s
single current and future source of electricity. In addition, controversy has
been caused by the claim that when taking into account the totality of the
network and cloud infrastructure, watching an hour of video weekly on a tablet
or smart phone consumes annually more electricity than two new refrigerators.
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