The Internet, including user equipment, data transmission media, data centers, and access networks, requires a considerable amount of power, consuming nearly 1% of annual electricity production worldwide in 2010 . Around 50 GW of power is consumed by network equipment, and this number is expected to double by 2020 . Increased power consumption not only implies greater monetary cost, but also has an expanding environmental impact in the form of carbon footprint and pollution . Reversing the trend is imperative and would pay off massively.
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