File menu --> Export file--> Space Loads Report (CSV)

This will report space areas, Lighting Power, and Misc. Equip. Power for all spaces in the model. You can open the CSV file in a spreadsheet and sum the values.

The LPD, EPD and Area are also reported in the SIM output file in the LV-B report. You can copy that into a spreasheet and calculate the total values.

I'm not sure if Misc. Equipment is the extent of what you mean by "installed electrical equipment".