Hello,
I've uploaded a version of your file as an attachment to your original post above. It that compares using the Generic System model to the Detailed PV model, both configured as battery-only systems.
The Detailed PV model case shows a reduction in the monthly demand charge, and the Generic System model case does not.
The Generic System model requires a non-zero nameplate capacity value even with the generation profile of all zeros. I arbitrarily set it to 50 kW. Note that you could just set plant loss to 100% instead of using a generation pofile of zeros.
The peak shaving dispatch seems to work better with the Detailed PV model approach, so I would recommend using it instead of the Generic System. I'll let the battery model developer know about this to investigate further.
Results from Detailed PV Model:
Results from Generic System model:
Best regards,
Paul.