We explored two infrastructure options for the overnight charging of long-haul trucks: direct charging from the grid (Option 1), and grid supplemented with an intermediate battery (Option 2). The intermediate battery at the charging station distributes the power load as trucks are charged overnight while there would be minimal utilization during the day. Option 1 has a higher peak power demand from the grid which incurs additional charges, thereby increasing the operating costs. Option 2 provides a means to avoid these costs, but it comes with higher capital expenses and additional costs due to the energy losses associated with charging and discharging the intermediate battery. We use a discounted cash flow study to compute the payback period of the additional capital investment required for option 2. First, we calculate the peak power drawn for both options. For option 1, we have a power demand of 150 kW (P option 1 ) based on the power rating of current-day fast chargers which is sufficient for overnight charging of a long-haul truck. The charging time (t charge ), in hours, is given by Equation ,