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This paper is concerned with zonal pricing as an approach to congestion management. The main contributions of the paper are summarized as follows. Algebraic characterization of optimal zonal prices is presented, where physical tie-line limits are explicitly accounted for without introducing conservatism. In a case of affine bids, it is shown that the optimal zonal price in a zone can be represented...
Electricity physical and financial contracts are common instruments used by generators to reallocate their risk among other market participants. Likewise, from the regulator point of view, contracts are understood and promoted as a way to mitigate the generators market power exercise. Therefore the analysis of the impact of these derivatives on the electricity market prices and on the agents' strategic...
This paper investigates the recent evolution of the oil price, with the objective to analyze the main drivers that during last fifteen years have led the unstable path and the volatility persistence in the international oil market. We assume that the oil price is composed by two components, deterministic and speculative. The first one can be defined as the certain one, and it is referred to the fundamental...
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