In EnergyPlus the End Use Subcategory field can be used for reporting. In OpenStudio, most of these fields have not been exposed yet (e.g. ElectricEquipment, Fan:ConstantVolume, Fan:VariableVolume), but for the Fan:ZoneExhaust it is. Entering a name such as "Parking Garage" will add a subcategory to the ABUPS End Use Subcategory table and one to the Energy Meters table.

Field: End-Use Subcategory

Allows you to specify a user-defined end-use subcategory, e.g., “Central System”, etc. A new meter for reporting is created for each unique subcategory (ref: Output:Meter objects). Subcategories are also reported in the ABUPS table. If this field is omitted or blank, the fan will be assigned to the “General” end-use subcategory.

This will report the total annual energy and demand for the exhaust fans. To get the total exhaust fan power for LEED, I use the Equipment Summary report which contains a table for Fans listing the rated electric power. There's also a table for Pumps to check the W/gpm values in this report.

In EnergyPlus the End Use Subcategory field can be used for reporting. In OpenStudio, most of these fields have not been exposed yet (e.g. ElectricEquipment, Fan:ConstantVolume, Fan:VariableVolume), but for the Fan:ZoneExhaust it is. Entering a name such as "Parking Garage" will add a subcategory to the ABUPS End Use Subcategory table and one to the Energy Meters table.

Field: End-Use Subcategory

Allows you to specify a user-defined end-use subcategory, e.g., “Central System”, etc. A new meter for reporting is created for each unique subcategory (ref: Output:Meter objects). Subcategories are also reported in the ABUPS table. If this field is omitted or blank, the fan will be assigned to the “General” end-use subcategory.