Economic Analysis of Electric Vehicle Supply Equipments - A Utility's Perspective

As the number of EVs increases on the roads, the power grid load is expected to drastically change exhibiting more chaotic load patterns throughout a day. By intelligent control it is possible to manage plug-in loads on the local distribution grid. This paper presents a holistic approach to cost and benefit analysis of smart grid enabled Electrical Vehicle Supply Equipment (EVSEs) from a utility point of view, including life cycle cost of ownership, risks and expected penalties due to high load stress on distribution network. It provides methodology for comparative analysis of different residential EVSE technologies. Different alternatives are presented and compared according to their life cycle costs. The annualized cost is calculated in each case.