St. Louis’ BEPS will require large commercial, multi-family, institutional, and municipal buildings (50,000 sq. ft. and above) to reduce energy use in order to meet an energy performance standard by May 2025, which will be reviewed and updated every four years. Performance standards will be set by the Building Energy Improvement Board (created by this legislation) and measured in the amount of energy used per square foot at the building (site energy use intensity or EUI) and based on building type. Building owners will be required to comply with standards using a free, online ENERGY STAR Portfolio Manager tool. This bill also includes the creation of a new Office of Building Performance to oversee the implementation, compliance and enforcement of the existing Building Energy Awareness ordinance (#70474), BEPS, and any future ordinances related to building energy improvement and performance.