Under CopyrightSpeth, DanielDanielSpethPaasch, SaskiaSaskiaPaasch2025-07-232025-07-232025https://publica.fraunhofer.de/handle/publica/489863https://doi.org/10.24406/publica-493010.24406/publica-4930Battery electric trucks (BET) are a promising option to reduce emissions from heavy-duty vehicles. However, the transformation to BET will cause an additional demand for electricity. Future charging strategies will influence the future peak load as well as the usability of BET. We simulate 2,400 representative single-day German truck driving profiles with three different charging strategies: (1) as slow as possible, (2) as fast as possible, and (3) slowly at depots and as fast as possible at public locations. Assuming 33 % electrification in 2030 and almost full fleet conversion in 2045, we scale our results to Germany. We find that charging as fast as possible leads to additional peaks up to 6 GW in 2030 and up to 18 GW in 2045, while the other charging strategies reduce peaks to 3 GW in 2030 and 8 GW in 2045. Therefore, implementing wise charging strategies will reduce future peak load.enHeavy Duty electric Vehicles & BusesSmart chargingSmart grid integration and grid managementFast and Megawatt charging infrastructureModelling & Simulationconference paper not in proceedings