I read through the documentation for operation schemes available for battery storage with or without a generator but could not find an option to use battery storage as mere storage solution without 'Feed' to the grid option. My Trial model shows negative net purchased electric energy/power. I wish to use the storage only with TrackChargeDischargeWithStorage and with no feed to the grid. Any suggestions? I know EMS could be an alternative but I think I might be missing a simple trick to have positive net purchase all the time depending on my ChargeDischargeSchedules.
I used ACwithStorage buss type, TrackChargeDischargeSchedule with peak and off-peak schedules defined,
Here is the screenshot of the output data 
