From 10th to 11th October 2018 the meeting of the TASK13 experts took place within the Photovoltaic Power Systems (PVPS) Programme of the International Energy Agency (IEA). At the meeting, first steps were taken towards the international coordination of current topics in the fields of “Performance, Operation and Reliability of Photovoltaic Systems”. The aim is to implement coordinated reports, workshops and presentations on these topics in the new media.