Dataset for: Market coupling and price volatility in Central Europe

This dataset supports the analysis presented in “Market coupling and price volatility: heterogeneous stabilizing effects of cross-border electricity flows in Central Europe.” It contains hourly, processed observations for the Czech day-ahead electricity market and its cross-border interconnections with Germany–Luxembourg, Austria, Slovakia, and Poland over the period from 1 January 2025 to 1 January 2026.The dataset includes constructed measures of price volatility, aggregate and bilateral net cross-border electricity flows, bilateral price spreads, system load, generation, renewable output shares, and time indicators. All variables are harmonized to an hourly frequency and are sufficient to fully replicate the empirical analyses, figures, and regression results reported in the associated manuscript.Raw proprietary market data are not redistributed. Instead, the dataset provides derived variables generated from publicly available market sources and processed according to the methodology described in the paper. The data are intended for research transparency, reproducibility, and further investigation of price dynamics, market integration, and risk mitigation in interconnected electricity markets.