As more building owners adopt net zero commitments and find their properties subject to energy performance and emissions regulations, the question now is how can we achieve these ambitious energy and carbon reduction targets? This session proposes a holistic approach to building performance monitoring that allows owners and project teams to comprehensively monitor the health of their buildings and accurately forecast how to achieve energy and carbon targets. Contractor, designer, and operator involvement early in the process is key to achieving the owner’s goals, but what does this look like in practice? Presenters will walk through the evolution of M&V and MBCx for LEED and California Title 24 requirements and outline drivers to implement submetering, then dive into the role of contractors, designers, and operators in achieving these goals. Ultimately, this session presents a critical piece of the path to decarbonization: how to use submetering to capture data on the full impact of building operations. This building performance modeling approach grounds sky-high targets in real-time data and sets owners up for success.