Analysing drivers and interdependencies in European electricity markets using XAI

• URL: http://arxiv.org/abs/2606.19118v1
• Date: Wed, 17 Jun 2026 14:32:39 GMT
• Title: Analysing drivers and interdependencies in European electricity markets using XAI
• Abstract summary: This paper combines deep neural networks (DNNs) with explainable artificial intelligence (XAI) techniques to analyse the determinants of electricity prices across 39 European bidding zones.<n>The analysis identifies that renewable energy sources, particularly solar, play a disproportionately important role in price formation despite their lower share in total power generation.<n>In addition, a synthetic EU-wide electricity market is constructed to explore the counterfactual scenario of a fully integrated market with a single price.
• Score: 0.08594140167290097
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Electricity markets are inherently complex systems characterised by strong nonlinearities, high-dimensional interactions, and increasing interdependence across regions. While deep neural networks (DNNs) have demonstrated strong predictive capabilities for electricity prices, their lack of interpretability limits their usefulness for understanding the underlying drivers of price formation. This paper addresses this gap by combining DNN models with explainable artificial intelligence (XAI) techniques to analyse the determinants of electricity prices across 39 European bidding zones. We employ SHAP (SHapley Additive exPlanations) to quantify feature contributions and apply and extend SSHAP, an aggregation framework to improve interpretability in high-dimensional settings. The analysis identifies that renewable energy sources, particularly solar, play a disproportionately important role in price formation despite their lower share in total power generation. Gas prices remain a dominant and consistent driver across electricity markets, while interconnections significantly shape price dynamics, highlighting the strong interdependence of European electricity systems. In addition, a synthetic EU-wide electricity market is constructed to explore the counterfactual scenario of a fully integrated market with a single price.

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