This is one of the coolest things I've seen. Wattcost tracks when different electrical appliances are turned on or off (it can tell what brand of refrigerator you have, for instance, just by the electrical signal it shows on your power line/meter). Reduce your carbon footprint.
Will be coming to United States in mid 2015 for $149.
https://www.wattcost.com/Originally collected by
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