The owner’s goals and IPMVP guidelines should drive the M&V plan, which should specify which systems are to be sub-metered and which are being spot metered, and how. The plan also explains how the energy end use is being predicted and measured, and how the M&V information will be used, such as adjusting building operations to reduce energy use. The plan shall also include a section on corrective action that will take place if the baseline energy use and the post-construction energy use vary greatly.