The paper shows how smart meters can be put to work, beyond their traditional use, towards explaining abnormal and unexpected patterns in the behavior of electrical appliances. We describe two kinds of uses, by visualizing and analyzing smart meter data for an academic building. The first gives us the ability to find anomalous appliance behaviors and the other helps to discover sub-optimal energy consumption patterns. The goal is to stress the fact that the ubiquitous smart meter can act as a sensor not only for monitoring consumption but also for detecting interesting energy usage patterns.
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