Demanda e preço ótimo da água bruta: O caso do Canal do Trabalhador, Fortaleza-CE

Abstract

This study has as objective to estimate the optimal price, in order to provide information for sustainable use of the Worker Canal in the Ceará. For estimation of the optimal price was necessary to obtain the parameters of elasticity and marginal cost of provisioning. The price elasticities of demand for irrigation and public supply company were estimated using the method of demand all or nothing, ordinary least squares, instrumental variables and least squares in two stages. The marginal cost was estimatedby the incremental cost. Based on the results we can conclude that the demand for irrigation is more sensitive to price changes than demand for public supply, while irrigators employers and capitalists, are more sensitive towards the families. In calculating the marginal cost was noted that it has a value less than the average cost. In calculating the optimal price, it was found that the higher tariff is brought to the public water supply, and between irrigators, the units capitalist employers should pay an amount greater than the family units.