In this paper the authors investigate how stationary supercapacitors (SCs) based energy storage system (ESS) control parameters affect the overall energy consumption of the public electric transport system. Optimal control parameters are found for different numbers of trams by the use of the simulation model of the tram system. The results show that the SC bank optimal discharge level has almost the same value for different In this paper the authors investigate how stationary supercapacitors (SCs) based energy storage system (ESS) control parameters affect the overall energy consumption of the public electric transport system. Optimal control parameters are found for different numbers of trams by the use of the simulation model of the tram system. The results show that the SC bank optimal discharge level has almost the same value for different numbers of trams.