Time period: 21:00:00 – 23:59:59 (Start1 between End1) Time period: 0:00:00 – 07:00:00 (Start2 between End2) In this case we have to add the same quantity twice with two other time period settings in the Variables field: After this step we create a new Expression, where we add these two variables. Set the „Grouping period” to 1 hour: The report will show the consumptions from 21:00:00 to 0:00:00 and from 0:00:00 to 7:00:00.