This section demonstrates a modified version of differential evolution (MDE) that produces the n best solutions for the real-world problem of selecting the optimum combination of compressor supply system components. The selection is based on the plant’s unique compressedair requirements. The cost function considers the initial purchase price and the cost of operating over a user-specified number of years. The results demonstrate MDE’s ability to produce non-intuitive solutions. Data representing 4060 unique industrial plants is presented to demonstrate the effect of various settings of F, K, and population size on convergence rates. The performance of MDE was verified using test cases with known solutions in order to obtain 100% certainty of the results presented here.