Abstract: Methods and systems of controlling frequency regulation system controllers in a utility grid frequency regulation program are shown and described. One method includes providing historical frequency regulation data and energy storage device specifications of an energy storage device connected to a frequency regulation system. The method also includes simulating frequency regulation operations by the energy storage device, with each simulated frequency regulation operation including simulating operation of the frequency regulation system using an upper state of charge threshold for the energy storage device and a lower state of charge threshold for the energy storage device to obtain a cost of using the frequency regulation system with the upper and lower state of charge thresholds. A frequency regulation system controller may be used to implement the upper and lower state of charge thresholds of the simulated frequency regulation operation that has the lowest costs of program participation.