1. A computer-implemented method for estimating energy savings for a process comprising the steps of: collecting a plurality of datasets of input variable values for the process; calculating the standard deviations for each of the processed datasets of the input variable values; collecting a set of standard deviation benchmarks corresponding to at least one input variable; calculating, by a processor, a difference between the standard deviation of at least one input and at least one corresponding standard deviation benchmark; and estimating, by the processor, energy savings corresponding to the difference.