Energy Management Systems (EMS) bundle sensors, controllers, and energy-consuming equipment under the control of a central operating system. These systems not only reduce overall energy expenditures and peak demand charges, but are also powerful tools to help co-op members track corporate carbon and climate goals, and to achieve ISO 50001 certification. This TechSurveillance article details several easy exercises that an account executive or other co-op staffer can go through with a member to make sure a EMS is operating effectively.