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Article

Residential Photovoltaic Profitability with Storage under the New Spanish Regulation: A Multi-Scenario Analysis

Institute of Industrial and Control Engineering (IOC), Universitat Politècnica de Catalunya—BarcelonaTech (UPC), 08034 Barcelona, Spain
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Academic Editors: Jesús Polo and Teuvo Suntio
Energies 2021, 14(7), 1987; https://doi.org/10.3390/en14071987
Received: 19 February 2021 / Revised: 26 March 2021 / Accepted: 31 March 2021 / Published: 3 April 2021
In recent years, solar price drops and regulations have helped residential users to invest in grid-connected photovoltaic (PV) facilities. In Spain, a novel law promotes self-consumption by discounting electricity fed into the grid from the utility bill. However, the performance of PV-based facilities depends on diverse factors. The contribution of this paper is to evaluate the techno-economic performance of such installations for different considerations linked to the Spanish law. A simulation model is used to examine different representative cities, load profiles and alternative objectives: maximising profitability and self-sufficiency. For profit maximisation, results show that load profile variations entail PV size changes up to 5 kWp for the same location, together with huge economic and self-sufficiency differences. In contrast, the solar radiation and compensation rate have a more limited influence. For self-sufficiency maximisation, the economic performance drops close to EUR 0, as benefits are used to double the PV size, buy batteries and reach close to 70% self-sufficiency. Finally, a sensitivity analysis shows a limited impact of the utility tariff and the technology cost on the PV size, but a relevant influence on the benefits. These results can help investors and families to quantify the risks and benefits of domestic self-consumption facilities. View Full-Text
Keywords: residential solar photovoltaic; self-consumption; battery storage; self-sufficiency; techno-economic analysis; Spain residential solar photovoltaic; self-consumption; battery storage; self-sufficiency; techno-economic analysis; Spain
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MDPI and ACS Style

Domenech, B.; Calleja, G.; Olivella, J. Residential Photovoltaic Profitability with Storage under the New Spanish Regulation: A Multi-Scenario Analysis. Energies 2021, 14, 1987. https://doi.org/10.3390/en14071987

AMA Style

Domenech B, Calleja G, Olivella J. Residential Photovoltaic Profitability with Storage under the New Spanish Regulation: A Multi-Scenario Analysis. Energies. 2021; 14(7):1987. https://doi.org/10.3390/en14071987

Chicago/Turabian Style

Domenech, Bruno, Gema Calleja, and Jordi Olivella. 2021. "Residential Photovoltaic Profitability with Storage under the New Spanish Regulation: A Multi-Scenario Analysis" Energies 14, no. 7: 1987. https://doi.org/10.3390/en14071987

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