In several countries (Chile, Bolivia, Argentina and Peru, among others), power plants are dispatched according to merit order, i.e., based on the marginal operating costs of the plants. In this scheme, the plant with the highest marginal cost sets the spot price at which firms trade the energy requires to fulfill their contracts. The model
This paper quantitatively tests the «new trade theory» based on product differen-tiation, increasing returns, and imperfect competition. We employ a standard model, which allows both changes in the distribution of income among industrialized coun-tries, emphasized by Helpman and Krugman (1985), and nonhomothetic preferences, emphasized by Markusen (1986), to effect trade directions and volumes. In addition,