To help the U.S. Chamber of Commerce meet strict D.C. energy standards (DC BEPS) for its 100-year-old headquarters, ABI Advantage implemented a Monitoring Based Commissioning (MBCx) program powered by SkyFoundry’s SkySpark® analytics. By transforming complex mechanical data into actionable insights, our team identified and resolved hidden inefficiencies in VAV sequences and equipment performance that manual inspections couldn't find. The results were historic: a 30% reduction in total energy usage and a leap in the building’s ENERGY STAR® score from 66 to 82. This data-driven transformation earned the landmark 2024 ENERGY STAR® Certification and proved that even the most complex historic facilities can become models of modern efficiency.