A PV battery system has an end$-$to$-$end ef$!$ciency of $77\%.$ The system is used to run an all$-$AC load that is run only at night. The charge controller ef$!$ciency is $96\%$ and the inverter ef$!$ciency is $85\%.$ How much energy will need to be gathered by the PV array if the load is $120$ W running for $4$ h$/$night$?$A PV battery system has an end$-$to$-$end ef$!$ciency of $77\%.$ The system is used to run an all$-$AC load that is run only at night. The charge controller ef$!$ciency is $96\%$ and the inverter ef$!$ciency is $85\%.$ How much energy will need to be gathered by the PV array if the load is $120$ W running for $4$ h$/$night$?$