I think their maybe a bug in the current version of this feature. After following your procedure: When defining the batch mode, you should tick "Create Hourly File". If you do that, when exiting the batch mode dialog, the dialog for the definition of Hourly files appears after the message : "You have to define the contents of your hourly file". However you can also define the output CSV file by the button "Output file". This will not generate hourly files despite providing a file name for each simulation line. The following batch file is generated by PVsyst. Ident;Create hourly;Nb strings;Simul ;file;in parall;Comment ;File name;; ;;; SIM_1; N;2560;