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Economic and Technical Aspects of Flexible Storage Photovoltaic Systems in Europe

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Department of Economic Methodology, University of Pannonia, Georgikon Faculty, 8360 Keszthely, Hungary
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Department of Foreign Languages, University of Pannonia, Georgikon Faculty, 8360 Keszthely, Hungary
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Department of Mechanical Engineering, University of Pécs, Faculty of Engineering and Information Technology, 7624 Pécs, Hungary
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Author to whom correspondence should be addressed.
Energies 2018, 11(6), 1445; https://doi.org/10.3390/en11061445
Received: 18 May 2018 / Revised: 31 May 2018 / Accepted: 1 June 2018 / Published: 4 June 2018
Solar energy has an increasing role in the global energy mix. The need for flexible storage photovoltaic systems and energy storage in electricity networks is becoming increasingly important as more generating capacity uses solar and wind energy. This paper is a study on the economic questions related to flexible storage photovoltaic systems of household size in 2018. The aim is to clarify whether it is possible in the European Union to achieve a payback of the costs of flexible storage photovoltaic system investments for residential customers considering the technology-specific storage aspects prevalent in 2018. We studied seven different flexible storage photovoltaic investments with different battery technologies in Germany, France, Italy, and Spain because, in Europe, these countries have a prominent role with regard to the spread of photovoltaic technology. These investment alternatives are studied with the help of economic indicators for the different cases of the selected countries. At the end of our paper we come to the conclusion that an investment of a flexible storage photovoltaic (PV) system with Olivine-type-LiFePO4, Lithium-Ion, Vented lead-acid battery (OPzS), Sealed lead-acid battery (OPzV), and Aqueous Hybrid Ion (AHI) batteries can have a positive net present value due to the high electricity prices in Germany and in Spain. The most cost-effective technology was the Olivine-type-LiFePO4 and the Lithium-Ion at the time of the study. We suggest the provision of governmental support and uniform European modifications to the regulatory framework, especially concerning grid fees and tariffs, which would be necessary in the beginning to help to introduce these flexible storage PV systems to the market. View Full-Text
Keywords: solar energy; photovoltaic system; flexible storage system; battery efficiency solar energy; photovoltaic system; flexible storage system; battery efficiency
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Zsiborács, H.; Hegedűsné Baranyai, N.; Vincze, A.; Háber, I.; Pintér, G. Economic and Technical Aspects of Flexible Storage Photovoltaic Systems in Europe. Energies 2018, 11, 1445.

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