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CEIC-03-15

"Market dynamics driven by the decision-making power producers"

Damien Ernst, Anna Minoia, and Marija Ilic

Abstract:
In this paper we consider a tool for analyzing the market outcomes when a set of competitive agents (power producers) interact through the market place. The market clearing mechanism is based on the location marginal price scheme. A model of the strategic behavior is formulated for the agents. Each one chooses its bid in order to maximize its profit by assuming that the other agents will post the same bid as at the previous clearing of the market, and by knowing the network characteristics. The income of each agent over a certain temporal horizon for different power system configurations (the addition of new transmission capabilities, new power plants) is evaluated by assuming a market dynamics and by integrating this dynamics over the chosen temporal horizon. The mathematical formulation, for the sake of simplicity, is related to a two node power system. In the simulations, the influence of different conditions (line transfer capacity, the number and size of generators, the presence of portfolio) on market outcomes is analyzed, and interesting and sometimes counter-intuitive results are found. 

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