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Energies 2017, 10(7), 976;

Profitability of Residential Battery Energy Storage Combined with Solar Photovoltaics

Chair of Business Information Systems, Technical University of Munich, Boltzmannstr. 3, 85748 Garching, Germany
Munich School of Engineering, Technical University of Munich, Lichtenbergstr. 4a, 85748 Garching, Germany
Author to whom correspondence should be addressed.
Academic Editor: Francesco Calise
Received: 9 May 2017 / Revised: 6 July 2017 / Accepted: 6 July 2017 / Published: 11 July 2017
(This article belongs to the Special Issue Energy Efficient and Smart Cities)
PDF [1320 KB, uploaded 12 July 2017]


Lithium-ion (Li-Ion) batteries are increasingly being considered as bulk energy storage in grid applications. One such application is residential energy storage combined with solar photovoltaic (PV) panels to enable higher self-consumption rates, which has become financially more attractive recently due to decreasing feed-in subsidies. Although residential energy storage solutions are commercially mature, it remains unclear which system configurations and circumstances, including aggregator-based applications such as the provision of ancillary services, lead to profitable consumer investments. Therefore, we conduct an extensive simulation study that is able to jointly capture these aspects. Our results show that, at current battery module prices, even optimal system configurations still do not lead to profitable investments into Li-Ion batteries if they are merely used as a buffer for solar energy. The first settings in which they will become profitable, as prices are further declining, will be larger households at locations with higher average levels of solar irradiance. If the batteries can be remote-controlled by an aggregator to provide overnight negative reserve, their profitability increases significantly. View Full-Text
Keywords: lithium-ion batteries; solar photovoltaics; ancillary services; economics lithium-ion batteries; solar photovoltaics; ancillary services; economics

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Goebel, C.; Cheng, V.; Jacobsen, H.-A. Profitability of Residential Battery Energy Storage Combined with Solar Photovoltaics. Energies 2017, 10, 976.

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