The payoff of the investment in an M&V program comes while the building is in use. However, there is a danger that operations and maintenance staff will not be prepared to understand the significance of data trends reported by the submetering or measurement system, or won’t have the time to investigate anomalies that aren’t causing immediate problems. Consider how your building is likely to be operated when planning and designing your M&V program—commitment from the owner is the key to success.