A computer-implemented method for itemizing energy consumption to generate and present a utility consumption profile based on disaggregated historical utility consumption data is disclosed. The computer-implemented method comprises obtaining data indicating historical utility consumption of a dwelling over a time period. A non-seasonal portion of the historical utility consumption data is then determined by first computing an average utility consumption based on one or more predetermined intervals within the time period, and then computing the non-seasonal portion by applying the average to the time period. The non-seasonal portion is then subtracted from the historical utility consumption data to obtain a seasonal portion of the historical utility consumption data. The seasonal and/or non-seasonal portion may be further disaggregated by end-use methods, and presented to the user in the utility consumption profile.