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Impact of Renewable Energy Expansion to the Balancing Energy Demand of Differential Balancing Groups

Journal of Sustainable Development of Energy, Water and Environment Systems
Volume 6, Issue 4, pp 784-799
DOI: http://dx.doi.org/10.13044/j.sdewes.d6.0215
Thomas Spiegel
Centre of Innovative Energy Systems, University of Applied Sciences, Münsterstraße 156, Düsseldorf, Germany

Abstract

The research addresses the present situation on the German electricity market caused by variable renewable energy sources. The increasing number of households with photovoltaic and battery storage systems and their impacts require special attention. These systems change the traditional electricity customer from the sole electricity consumer to an electricity producer and consumer in one person. These so-called prosumers differ in their actual electricity demand from the initially estimated electricity demand with standard load profile. This discrepancy results in deviations within a differential balancing group. Thereby, the main finding of this research is a significant higher balancing energy demand with the expansion of photovoltaic and battery storage systems. Hence, the standard load profile is particularly not suitable for differential balancing groups with a high penetration of solar systems and still less suitable for groups with solar and battery storage systems.

Keywords: Balancing energy, Balance responsible party, Electricity schedule registration, Variable renewable energy sources, Photovoltaic and battery storage systems, Prosumer, Standard load profile, Differential balancing group.

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