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Electricity market price may not always be a reference to determine the existence of market power. This paper discusses why electricity price in a day-ahead electricity market may exhibit peaks without representing market manipulation by any of the players. We use genetic algorithms to simulate the trading behavior of artificial agents in the spot market. Two case studies are reported and the results...
Market power is one of the main concerns in the Italian electricity market. Transmission constraints and highly concentrated ownership structure in the market have been allowing firms to exercise market power and raise electricity prices above marginal cost. This paper presents a supply function equilibrium (SFE) model for analyzing the exercise of potential market power in the Italian electricity...
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