Energy management control systems (EMCS) are a very important part of energy engineering and can significantly increase return on investment while providing flexibility that is unmatched by conventional methods. Energy management control systems include a wide range of devices and systems from a simple timer that turns off a light or a ventilation fan, to centralized, computer-based systems that utilize sensors, user input, and operating parameters to monitor, control and optimize building systems.
Below is an Energy management control systems paper from the Naval Engineering Laboratory that provides an in depth explanation about the EMCS system and various calculation that illustrate the theory, practical applications, and potential return of EMCS.