OCPD for PV+ESS

Hi, For the PV system we show the OCPD as Breaker / TAP based on the 125% rule, for the PV+ Battery system how do we offer the interconnection OCPD, did we add PV and ESS OCPD together in an MSP, For Example, for phase system, we connect 60A PV in controller 2 and 40A battery breaker to controller 2, then the main breaker and load breaker on the controller is 100A right? and the line from controller2 to MSP carries 100A current or only 60A PV current? Please anyone make it clear
Thanks in advance