Projected costs for sodium-sulfur electric vehicle batteries

Cost projections and required selling prices for electric vehicle batteries using sodium-sulfur technology are developed. The projected costs are aggregated from a unit-operations-level cost analysis. Designs and costs are based on a 69 kWh battery (nominal capacity) and a manufacturing facility producing 6600 batteries per year. The required selling price is estimated to be $112 per kWh. Sensitivities of cost to larger production volumes are also investigated. An independent team reviewed the work and found the methodology and results consistent with good cost analysis practice