The energy efficiency of network equipments and devices is important for economic as well as environmental reasons. Studies estimate the USA’s network infrastructure uses 24 TWh per year, or $24 billion. This includes network switches, access points, end-node NICs and servers. Consecutively, the theme of power reduction in various electronic devices is gaining tremendous momentum. Here are some interesting design ideas in this area: 1- A cell phone charger which shuts itself down when no load is present;
2- A router which goes into sleeping mode (or a Zigbee XCVR);
3- A room display encouraging users to save energy (measure energy usage in real-time) - can be installed in the building corridor;
4- A man-powered charging center on the campus with some displays and learning modules about ways to save energy (students can hookup their electronic devices and change them);
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