CR2450 battery.Finding the value of fast charging and battery technology for new energy vehicles

　　Finding the value of fast charging and battery technology for new energy vehicles

　　Operators of new energy vehicle fast charging stations face many business challenges (including demand charges and time-of-use charges). Energy storage systems can help fast charging stations reduce some operating costs. However, its application value and benefits are highly dependent on the electricity tariff structure, capital costs, charging facility utilization and customer price sensitivity. This research report illustrates the economics and ideal application conditions of energy storage in fast charging stations.

　　In order to ensure that the operation of a fast charging station is financially break-even, the daily usage rate of the fast charging station needs to reach at least 8-12 times. However, most charging stations are currently used less than 5 times a day.

　　If they want to be profitable without subsidies, new energy vehicle charging station operators will have to charge customers approximately US$0.50/kWh for charging. The charging fee of $0.40/kWh is equivalent to the refueling cost of $3 per gallon of gasoline for a gasoline-powered car. In the first half of 2018, the average retail gasoline price in the United States was approximately $2.70 per gallon. During the same period, the average price in the UK was $6.32 per gallon.

　　In service areas with higher demand electricity rates (Long Island Electric and Pacific Electric Co.), energy storage systems can reduce the operating expenses of fast charging stations. But for areas with low or no demand electricity charges (such as the electric vehicle charging system recently proposed by Southern California Edison Electric Company SCE), energy storage solutions are not economical. .

　　Some U.S. electricity markets are planning to eliminate demand electricity charges for new energy vehicle charging. Therefore, it is only feasible for charging operators to deploy energy storage systems within charging stations if higher demand tariffs are expected to persist for at least ten years, or if local distribution grid capacity constraints mean they cannot otherwise build charging stations. economic significance.

　　In fast charging stations, the grid services provided by energy storage systems do not yield enough benefits. In the US PJM power market, for a 200kW/120kWh energy storage system, if it participates in the frequency regulation market for two hours a day, its annual income is approximately US$3,000.

　　a set of data

　　$0.50/kWh

　　Charging electricity price that ensures daily operation of fast charging stations to achieve profitability

　　$0/kW

　　SCE’s recommended demand electricity charges for fast charging stations

　　12

　　For the energy storage system to be economical, the number of times a fast charging station is used per day

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