The average power usage effectiveness (PUE) ratio for a data center in 2020 is 1.58, only marginally better than 7 years ago, according to the latest annual Uptime Institute survey (findings to be published shortly).
PUE, an international standard first developed by The Green Grid and others in 2007, is the most widely accepted way of measuring the energy efficiency of a data center. It measures the ratio of the energy used by the IT equipment to the energy used by the entire data center.
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