The cost to charge an electric vehicle (EV) varies depending on the price of electricity at different charging sites (home, workplace, public), vehicle use, region, and time of day, and for different charging power levels and equipment and installation costs. This paper provides a detailed assessment of the current (2019) levelized cost of light-duty EV charging in the United States, considering the purchase and installation costs of charging equipment and electricity prices from real-world utility tariffs. We find national averages of $0.15/kWh for battery EVs and $0.14/kWh for plug-in hybrid EVs in the United States. Costs, however, vary considerably (e.g., $0.08/kWh to $0.27/kWh for battery EVs) for different charging behaviors and equipment costs, corresponding to a total projected fuel cost savings between $3,000 and $10,500 compared with gasoline vehicles (over a 15-year time horizon). Regional heterogeneities and uncertainty on lifetime vehicle use and future fuel prices produce even greater variations.

电动汽车（EV）的充电成本取决于不同充电地点（家庭，工作场所，公共场所）的电价，车辆使用，地区和一天中的时间，以及不同的充电功率水平，设备和安装成本。本文提供了对美国当前（2019年）轻型EV充电的平准化成本的详细评估，其中考虑了充电设备的购买和安装成本以及来自现实世界公用事业电价的电价。我们发现在美国，电动汽车的全国平均水平为0.15美元/千瓦时，插电式混合动力汽车为0.14美元/千瓦时。但是，针对不同的充电行为和设备成本，成本相差很大（例如，电池EV的成本为0.08美元/千瓦时至0.27美元/千瓦时），相当于预计的总燃料成本节省为3,000美元至10美元，与汽油车相比（在15年的时间范围内）为500。区域异质性以及终生车辆使用的不确定性和未来燃油价格的差异更大。