Dear Forum, Dear Mr Mermoud, Lately I worked together with colleagues on different machines at the same project. Using exact the same .ond/.pan/.prj and the same settings within the project. We experienced that we got different losses for the inverter's eficiency. The deviation is about 0.5%. I tested with upto date version and former versions of PVsyst. Did someone experienced the same issue? What infos/files can I upload to give you a insight into possible issues. Unfortunately it's pretty urgent... Disclaimer: We are long term users and are gone to a lot of "learning experiences" with PVsyst. Hopefully this is not a newby thing... Best regards Fabian
