Determine whether IPMVP Option B or Option D is most appropriate for your project design:Option B is based on engineering calculations using metered data and is generally more appropriate for smaller buildings.Option D uses calibrated, whole-building ener

Determine whether IPMVP Option B or Option D is most appropriate for your project design:

• Option B is based on engineering calculations using metered data and is generally more appropriate for buildings with non-interactive loads only.
• Option D uses calibrated, whole-building energy simulations for both the baseline and design case and is generally more appropriate for larger, more complex building projects using an energy model. 

More tips on Option B versus Option D are below, at the end of Schematic Design.