Two conference posters were presented at the 13th Symposium on Power System Management which was held between 5th and 7th of November 2018 in Rovinj, Croatia. The titles of papers are: “Modelling Of Photovoltaic Power Plant” (full paper; poster) and “Status and Classification Of Methods For Predicting Electric Power Production From Wind Power Plants” (full paper; poster). The posters were presented by Josip Đaković.