If you have an Electric Vehicle (EV) charging station, it should be benchmarked based on how it is metered:
1) If the energy use is on the main meter, but you submeter it, then you will exclude it from your property and enter an additional meter with negative entries. (More information here)
2) If the energy use is on its own meter (not submetered), then just leave out the charging station altogether and exclude the meter from your benchmarking.
3) If its on the main meter and not submetered, then you have to include the energy from the charging station