Measurement and Verification, or M&V, is a key piece of strategic energy management. California as a state is leading many initiatives and producing key resources, which can be browsed here.
Released in July 2025, the California SEM M&V Guide Version 4.0 provides the methodology for calculating energy savings at a facility-level.
This guide is a companion to the California SEM Program 3-Cycle Design Guide first released in June 2022.