Certain examples relate to computer implemented methods and systems including at least three modules whose combined functionality provides for interpretation and optimization of usual and unusual patterns in energy consumption; the identification, quantification, and monetization of hidden operating and financial waste and the accurate measurement of the results of implemented energy management solutions. The first, “Expert Module”, provides information that assists with the accurate interpretation of the information provided in the Operations module. The second, “Costs Module”, allows users to modify consumption and price components and derive the resulting operating costs based on the facility's applied or available rate structures. The third, “Operations Module”, charts and evaluates the current operating performance of a facility down to 15-minute intervals in comparison to the operating performance of a pre-selected “base year”. Comparisons are synchronized over intervals in a manner that allows users to compare and comment on individual graphs interactively.