is the process of assessing the performance of a building after it has been occupied and used by its intended users. The evaluation typically includes a combination of objective data, such as energy consumption and indoor environmental quality, as well as subjective data, such as user satisfaction and comfort. POE can be used to identify areas where the building is performing well, as well as areas where improvements can be made.

is the process of identifying and correcting building systems that are not performing as intended. It typically includes a thorough assessment of the building’s mechanical, electrical, and plumbing systems to identify issues such as equipment malfunctions, control system problems, and energy inefficiencies. Once issues are identified, corrective actions are taken to improve the building’s performance, such as repairing or replacing equipment, optimizing control systems, and implementing energy conservation measures.