In a generic E+ model, how does one calculate/ get to know of the total energy consumed? If we have to manually calculate it from the <idfFileName>.csv or <idfFileName>Meter.csv files, what columns should be taken into consideration?

In a generic E+ model, how does one calculate/ get to know of the total energy consumed? If we have to manually calculate it from the <idfFileName>.csv .csv or <idfFileName>Meter.csv Meter.csv files, what columns should be taken into consideration?

In a generic E+ model, how does one calculate/ get to know of the total energy consumed? If we have to manually calculate it from the .csv or Meter.csv files, what columns should be taken into consideration?