Renewable energy production in Germany will grow immensely in the next twenty years. Wind energy generation capacity, in particular, is expected to be 65 GW by 2030 and will constitute a larger proportion of the total generated electricity than today. Storage facilities are required to compensate for the fluctuating character of renewable electricity generation. Stationary storage such as pumped hydro and compressed air are typical solutions so far. Electric vehicles and plug-in hybrid electric vehicles could also provide electrical storage capacity in the near future. This will lead to the possibility of balancing the fluctuating energy generation with mobile storage devices. A problem with mobile storage is the uncertainty in the availability of electrical vehicles connected to the grid and their spare storage capacity at any instant. In this study the availability of electric vehicles is simulated for Germany. The simulation determines the availability on an hourly basis for all days of an average week. The storage capacity for a defined scenario of electric vehicle uptake was also calculated. In conclusion the overall availability of plug-in electric passenger cars in Germany is high. A significant difference between the characteristics of weekdays, Saturdays and Sundays is evident. A high potential to use electric passenger cars for balancing the fluctuating renewable energy could be presumed, due to the large number of vehicles being plugged into the grid during in the evening hours for which charging could be delayed into the night.
Modelling the plug-in availability and calculation of energy storage potential of electric vehicles in Germany
Modellsimulation der Plug-in-Verfügbarkeit und Berechnung des Energiespeicherpotentials von Elektrofahrzeugen in Deutschland
2009
9 Seiten, 6 Bilder, 23 Quellen
Conference paper
Storage medium
English
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