In this study, we calculate the total costs incurred by fleet owners to purchase and operate a truck, which we present as a Total Cost of Ownership (TCO) without taxes and incentives. TCO consists of the capital and operating expenses over the lifetime of the truck to deliver the same average payload as a diesel truck. Capital cost includes the manufacturing cost of vehicle components (battery, motor, DC/DC converter, and glider). The operating expenses account for labor, electricity consumption, maintenance & repair, and insurance. Other costs, such as electricity taxes, powertrain taxes, and incentives, were excluded from the analysis due to their large variability by location, jurisdiction, and over time, which makes accurate projections difficult and highly uncertain. Also, it is unknown what road taxes might be imposed on BET. A detailed description of each cost term is provided in the following section.