Creating an Energy settlement can be done in the module Energy under Finance.
The resort has to be chosen, and also the date "Generate till". This date will define the Arrival date = Departure date of the invoice reservation which will be created. This date doesn't have any impact on which meter readings will be taken into account. So even if the date "Generate till" = 30-09-19 and the meter reading has date = 22-10-19, the meter reading will be taken into account and Arrival date = Departure date = 30-09-19 of the invoice reservation.
The Payment term set chosen will take care of the payment term added in the invoice reservation. Check if this configuration for invoices does already exist.
The system will ask: "Do you want to settle the invoice amount with your deposit?" In this example, we only want to settle the costs as configured, so the answer will be "No".