Optimal participation of wind power producers in a hybrid intraday market: A multi-stage stochastic approach

Miguel Carrión, Ruth Domínguez and Giorgia Oggioni

Energy Economics, 2025, vol. 144, issue C

Abstract: The Single Intraday Coupling has imposed the integration of the European intraday electricity markets, taking as a benchmark the continuous trading structure. This has implied the creation of hybrid intraday electricity markets, defined as a mix of continuous and auction-based trading sessions, in those European countries with a former full auction system for this market. In this context, this paper proposes a multi-stage stochastic programming model for deciding the optimal participation of a wind power producer in a hybrid intraday market. This decision is made considering the possibility of participating in subsequent trading sessions, represented by a first continuous-intraday session, followed by an auction-based session and, then, a second section of the continuous intraday. As a final step, in the balancing market, the wind power producer can adjust its energy balance according to the wind power availability. The wind power availability, the prices in the intraday auction session and in the balancing market, and the acceptability of orders in the continuous sessions have been modelled as stochastic parameters. The risk level of the wind producer is represented in the formulation through the CVaR. By doing a deep study of the Spanish intraday market outcomes, we design a realistic case study and conduct several sensitivity analyses regarding the wind power availability, the prices in the market, the possibility of or not of participating in subsequent trading sessions, and the risk level. The main conclusions are: (i) arbitrage is observed in the participation of the wind power producer in the continuous and auction-based intraday sessions, especially under a risk-neutral perspective, (ii) the participation in the intraday continuous session is strongly influenced by the possibility of participating afterwards in the auction session, and (iii) the bidding strategy of a risk-averse wind power producer is mainly linked to the available wind power.

Keywords: Bidding strategy; Intraday continuous session; Multi-stage stochastic problem; Short-term uncertainties; Wind producer (search for similar items in EconPapers)
JEL-codes: C61 C63 D81 L11 L94 Q4 (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:eneeco:v:144:y:2025:i:c:s0140988325001264

DOI: 10.1016/j.eneco.2025.108303

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