How to obtain daily kWh used?

Is there an easy way to obtain kWh used (not added) for a 24 hour period?  As it stands right now, if the car is charging overnight, kWh used for a given day will include kWh used in a charge that starts in that day, but finishes the next day.  This is fine as far as the charge itself goes, but creates a data discrepancy from the daily usage info provided by my utility.