A charging station, a method and device for controlling the charging station are provided. The charging station(100) includes a controller(118) configured to obtain load predictions of electric vehicles(120,122) and load predictions of a photovoltaic converter(110) for time slots over a time period; determine power values of an energy storage converter(114) for the time slots over the time period based on the load predictions and a cost model of the utility; and cause the energy storage converter(114) to supply power from an energy storage(112) for the first time slot based on a power value associated with the first time slot. The controller(118) may repeat the process with updated predictions.