On the efficiency of the Argentinean electricity wholesale market

This paper discusses two key aspects regarding the efficiency of the Argentinean Electricity Market. Using hourly data on prices, marginal costs, and operational status of generators, it will be argued that, unlike the former British and Californian electricity spot markets, this market is not subject to the conventional forms of exercise of market power by generators. We then use Chao's (1983) model of optimal configuation of electricity supply to evaluate the social desirability of the change in the supply pattern of the Argentinean electricity industry, which took place throughout the last ten years.

O debate sobre reformas e regulação e o caso da ANEEL

Este trabalho tem como objetivo verificar em que medida a flexibilização da gestão de recursos humanos na agência reguladora do setor elétrico brasileiro é consistente com a independência regulatória, entendida como autonomia de gestão nas dimensões financeira, técnica e de recursos humanos. A independência das agências reguladoras constitui mecanismo contra os efeitos negativos das ações de interesses privados, ou rent-seekers, e o uso político inadequado, gerador de ineficiências econômicas. O trabalho descreve o processo de constituição da diretoria colegiada, o regime e o quadro de pessoal vigente, e analisa o processo de reestruturação do setor elétrico brasileiro, concluindo que a contratação temporária e a tentativa de implementar regime jurídico diferenciado repete os equívocos e disfunções que caracterizaram a burocracia pública desde os anos trinta.

Entry and externality : hydroelectric generators in Brazil

This work analyzes the entry problem in the hydroelectric generation industry. The operation of a generator upstream regularizes the river flow for generators located downstream on the same river, increasing the production capacity of the latter. This positive externality increases the attractiveness of the locations downstream whenever a generator decides to enter upstream. Therefore, the entry decision of a generator in a given location may affect all entry decisions in potential locations for plants downstream. I first model the problem of generators located in cascade on the same river to show the positive effect of the externality. Next, I develop a method to estimate an entry model specific to the hydro generation industry which takes into account the externality of the entry decisions. Finally, I use a data set on investment decisions of Brazilian hydro-generators to estimate the model. The results show a positive incentive to locate downstream from existing plants and from locations where entry is likely to occur. An interesting by-product of the analysis is that the year effects’ estimates show an increase one year before the energy crisis of 2001, providing evidence that the market anticipated the crisis. It contradicts the governmental version that the crisis was due to an unexpected drought.