By analysing existing agent-based model (ABM) charging behaviour formalisations, this study evaluates the impact of a new static band-width network tariff structure on charging demand. Additionally, this approach enables a comparative study to reflect upon the susceptibility and value of the ABM method. Based on the simulation results, this study shows how steering EV charging behaviour by implementing a static bandwidth tariff structure will lead to lower demand peaks. However, the results also show how the increased simultaneity among charging sessions are expected to mit-igate the decreasing impact of the intervention. Furthermore, this study signifies how interpreting and scoping of a complex system can lead to significantly different model dynamics.