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Impact of Electric Vehicles on Travel and Electricity Demand in Metropolitan Area: A Case Study in Nagoya



Author(s)

Ryo Kanamori, Takayuki Morikawa, Masaya Okumiya, Toshiyuki Yamamoto and Takayuki Ito

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DOI:10.17265/1934-7359/2015.03.012

In this study, we examine the impacts that EVs (electric vehicles) have on vehicle usage patterns and environmental improvements, using our integrated travel demand forecasting model, which can simulate an individual activity-travel behavior in each time period, as well as consider an induced demand by decreasing travel cost. In order to examine the effects that charging/discharging have on the demand in electricity, we analyze scenarios based on the simulation results of the EVs’ parking location, parking duration and the battery state of charge. From the simulation, result under the ownership rate of EVs in the Nagoya metropolitan area in 2020 is about 6%, which turns out that the total CO₂ emissions have decreased by 4% although the situation of urban transport is not changed. After calculating the electricity demand in each zone using architectural area and basic units of hourly power consumption, we evaluate the effect to decrease the peak load by V2G (vehicle-to-grid). According to the results, if EV drivers charge at home during the night and discharge at work during the day, the electricity demand in Nagoya city increases by approximately 1%, although changes in each individual zone range from -7% to +8%, depending on its characteristics.

Electric vehicle, integrated travel demand forecasting model, electricity demand, V2G