This report explains the processes behind the design, construction and testing of a high-voltage power grid simulator and visualizer. For this, a system based on data found in a paper was created. This paper describes an aggregated grid for the Dutch high-voltage power grid in 2018. The main use case of this system would be for educative purposes, where interested students and potential students can come, play and learn at the same time while making interactive decisions and seeing how their actions are influencing the system as a whole. The subsystem in this report is tasked with the integration of the data from the forecasting & scenario module and the inputs from the hardware module, furthermore it calculates the power flow using a Gauss-Seidel algorithm and visualizes its results alongside the forecasting in Godot