ICCT's HDV CHARGE model (Schmidt et al., 2O24). Electric trucks' charging energy and power needs depend on their energy efficiency, annual mileage, and battery size of the VECTO groups assessed in this study in 2030. The following paragraphs explain how these values were calculated. Rodriguez, 2023) based on the different driving cycles and payloads per VECTO group, annual mileage per VECTO group was also based on Regulation (EU) 2024/1610. The by an assumed average of 26O days of operation per year drawn from the CNR (n.d.). capacity required to meet the average daily mileage, considering the truck's energy consumption and usable battery state-of-charge of 80%. While this approach fits the specific mission profiles. The resulting battery sizes were cross-checked with existing BET model offerings for each VECTO group and sized accordingly. For long-haul trucks, the battery size was capped at 6oo kWh based on the current models in the market. However, this could increase with battery technology developments; some long-haul truck models. Changes in battery size are further examined in the sensitivity