Robin Vincent

Dear Krishantha, To properly answer your question, you need to contact support@pvsyst.com and share your project with us.

Dear sarah95, The unavailability figure defined in PVsyst represents the time fraction during which the system won't be able to produce electricity. The unavailability losses are not directly linked to the unavailability fraction, but also to when the system is not available (day, night, summer, winter, ...). Thus a same unavailability duration can give dissimilar unavailability related losses. You can find more details on our help page related to the subject : https://www.pvsyst.com/help/index.html?unavailability_loss.htm