Profitability of Alternative Battery Operation Strategies in Photovoltaic Self-Consumption Systems under Current Regulatory Framework and Electricity Prices in Spain

Pablo Durán Gómez, Fernando Echevarría Camarero (), Ana Ogando-Martínez and Pablo Carrasco Ortega
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Pablo Durán Gómez: Energy Division, Galicia Institute of Technology (ITG), 15003 A Coruña, Spain
Fernando Echevarría Camarero: Energy Division, Galicia Institute of Technology (ITG), 15003 A Coruña, Spain
Ana Ogando-Martínez: Energy Division, Galicia Institute of Technology (ITG), 15003 A Coruña, Spain
Pablo Carrasco Ortega: Energy Division, Galicia Institute of Technology (ITG), 15003 A Coruña, Spain

Energies, 2023, vol. 16, issue 21, 1-25

Abstract: The decreasing costs of solar photovoltaic (PV) technology have led to an exponential growth in the use of PV self-consumption systems. This development has encouraged the consideration of battery energy storage systems (BESS) as a potential means of achieving even more independence from the fluctuating grid electricity prices. As PV technology and energy storage costs continue to decline, both technologies will likely play an increasingly important role in the renewable energy sector. The profitability of batteries in PV self-consumption systems is largely influenced by the price of consumed electricity and the price at which surplus energy is remunerated. However, strategies in PV-BESS self-consumption systems typically do not take electricity prices into consideration as a variable for decision making. This study simulates and analyzes battery operation strategies that take into account electricity prices. The simulations are performed using real industrial consumption data and real electricity prices and tariffs, they cover the entire lifespan of the batteries, and include aging and degradation due to use and cycling. A techno-economic model is used to evaluate the advantages of incorporating these battery operational strategies into an actual PV-BESS system. The results demonstrate that the proposed strategies enhance the savings that batteries can provide.

Keywords: battery energy storage system; battery energy management system; industrial buildings; photovoltaic system; self-consumption; Spanish self-consumption regulation; techno-economic analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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