Building Automation Systems (BAS) are essential tools for managing and optimizing the energy performance of a building. According to the LEED v4 BD+C Study Guide under EA Prerequisite: Minimum Energy Performance and EA Credit: Optimize Energy Performance, BAS are primarily used to:
“Control and monitor mechanical, electrical, and plumbing (MEP) systems, ensuring the building operates as designed and maintains operational efficiency over time.”
“BAS are also used to monitor energy and water use and track functional performance, identify faults, and support commissioning efforts.”
BAS continuously collect real-time data from HVAC systems, lighting, and other building services to monitor functional performance, making adjustments automatically to maintain efficiency and comfort. This supports LEED goals for reduced energy consumption, occupant comfort, and building longevity.
Options C and D (life-cycle assessments and energy simulations) are typically conducted before system implementation using design software, not by BAS. Option A (efficiencies of scale) refers more to economic/business strategy, not building automation.