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World Electric Vehicle Journal is published by MDPI from Volume 9 issue 1 (2018). Articles in this Issue were published by The World Electric Vehicle Association (WEVA) and its member the European Association for e-Mobility (AVERE), the Electric Drive Transportation Association (EDTA), and the Electric Vehicle Association of Asia Pacific (EVAAP). They are hosted by MDPI on mdpi.com as a courtesy and upon agreement with AVERE.
Open AccessArticle

Interdependencies of Home Energy Storage between Electric Vehicle and Stationary Battery

Thomas Kaschub (corresponding author), Chair of Energy Economics, Institute for Industrial Production (IIP), at Karlsruhe Institute of Technology (KIT) (University of Karlsruhe), Building 06.33, Hertzstr. 16, D-76187 Karlsruhe, Germany
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World Electr. Veh. J. 2013, 6(4), 1144-1150; https://doi.org/10.3390/wevj6041144
Published: 27 December 2013
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Abstract

Decentralized power generation in private homes, especially by photovoltaic systems, is already common in Germany. The developments of batteries, both for electric vehicles (EV) and for stationary storage might lead to a mass market for those batteries. In this paper we evaluate the economy of stationary battery storage with photovoltaic system at home in the context of available EV and its integration level into the home. Therefore, we use an optimization model with one year detailed operation planning and maximize the net present value of the storage investment. We integrate restriction functions for the technical parameters of the storage systems and limit EV availability and usage on the basis of German mobility studies for single vehicles. The results show, that an investment in a stationary battery system in combination with a photovoltaic system is profitable in Germany under the assumptions considered. The observed high numbers of battery cycles lead to strong requirements for battery lifetime, i. e. cycle stability and long calendar life time. Therewith, Li-ion batteries are a promising technology. In combination with an EV, the net present value of the stationary battery system is smaller when the EV is integrated into the home by controlled charging or the vehicle to home (V2H) concept, which allows discharging into the home system. The size of the EV battery, the availability at daytime and the load curve of the home are the main influencing factors for the profitability of the battery system.
Keywords: energy storage; EV; load management; photovoltaik; optimization model energy storage; EV; load management; photovoltaik; optimization model
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Kaschub, T.; Jochem, P.; Fichtner, W. Interdependencies of Home Energy Storage between Electric Vehicle and Stationary Battery. World Electr. Veh. J. 2013, 6, 1144-1150.

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