1. A method, comprising: acquiring ( 50 ) a signal indicative of power consumption; detecting ( 52 ) a transient in the signal; extracting ( 54 ) a feature indicative of the transient, wherein extracting the feature includes: fitting ( 60 ) a plurality of models to the transient; selecting ( 62 ) one of the plurality of models as a model for the transient; defining ( 64 ) the feature indicative of the transient based on at least one parameter of the model for the transient; and classifying ( 56 ) the transient based on the feature.