U.S., European, and Japanese government agencies and industry groups are expected to announce an agreement on how to measure the energy efficiency of data centers. The agreement establishes a common metric that data centers worldwide can use to report their energy efficiency levels, potentially providing a yardstick for companies to assess the efficiency of their own data centers and measure the effectiveness of energy-saving techniques at other facilities. The Green Grid, a U.S.-based industry consortium, orchestrated the agreement, which is supported by the U.S. Department of Energy, the U.S. Environmental Protection Agency, the European Union Code of Conduct, and the Japan Ministry of Economy.
The participating groups have agreed to use Power Usage Effectiveness (PUE) as their preferred energy efficiency metric. PUE, developed by the Green Grid, divides the total energy consumed by a data center by the amount of energy used to power the technology equipment, showing how much energy is lost to mechanical and electrical systems.
The Green Grid also is working with representatives from China, India, and other large markets to have them participate in the initiative as well.
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