Create a baseline for comparison to actual measured data. The baseline depends on your building type, its complexity, and the IPMVP option you’ve chosen. Your baseline will be either the whole building or space, or system-specific, and in accordance with the extent of the M&V plan you previously developed. Projected baseline energy usage can be determined by using energy-efficiency standards or guidelines. If your project is a retrofit, the baseline will be the usage for systems in place before renovation began.