A copula-based whole system model to understand the environmental and economic impacts of grid-scale energy storage

Fan He, Matthew Leach, Michael Short, Yurui Fan and Lirong Liu

Applied Energy, 2025, vol. 379, issue C, No S0306261924023183

Abstract: Energy storage is important in future power systems. However, the role of grid-scale energy storage in the power system and in the whole socio-economic system is unclear. A copula-based whole system model is developed to explore the economic and environmental effects of grid-scale energy storage, thus supporting the decision-making at micro and macro levels. A power system optimisation model is linked with an input-output model, and the copula function is embedded in the model to reflect the multiple and interactive uncertainties from electricity demand, emission constraints, and sector disaggregation. We conducted case studies on China and the UK in 2025 considering different storage technologies (Pumped hydro, Battery, Flywheels storage) to show the differences related with power systems and economic structures. We find that increasing energy storage capacity leads to increase in renewable generation capacity (solar generation in China and wind generation in the UK). Thus, it can reduce their total economy-wide carbon emissions. Uncertainty in sector disaggregation will have a large impact on carbon emissions in some extreme cases, especially in those sectors closely linked to the power sector and with high emission intensity.

Keywords: Grid-scale energy storage; Power system optimisation; Input-output model; Copula function; Whole system impact (search for similar items in EconPapers)
Date: 2025
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DOI: 10.1016/j.apenergy.2024.124935

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