• About three terrawatt hours per year, or 4 percent of all energy used by office and network equipment is consumed in "off" mode. Even when office computers and other digital devices are off, they continue to need juice for "life support."

    Source: The Lawrence Berkeley National Laboratory

  • A typical server farm uses 10 to 20 megawatts of power per hour-roughly the equivalent of 10,000 to 20,000 homes with every light and appliance turned on.

    Source: Edison Electric Institute

  • A 20-minute outage at a Hewlett-Packard circuit fabrication plant would cost the company $30 million and an entire day of production to be lost.

    Source: California Public Utilities Commission

This article was originally published on 07-01-2001
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