The paper analyzes volatility of the electricity prices in the Japanese day-ahead market using realized volatility. We use several jump tests to decompose total realized variation into jump and continuous components. Then, we estimate several HAR models that show the time-dependence structure of...

In this paper we characterize optimal punishments with detection lags when the market consists of n oligopolistic firms that compete à la Cournot. It is shown how in the presence of detection lags optimal punishments fail to restore cooperation as long as the number of lags increases. Moreover,...