Revista de Gestão, Finanças e Contabilidade

05-22

Authors: Gláucia Fernandes, Vinicius Mothé Maia, Leonardo Lima Gomes

This paper evaluates the real option of storing the biogas from swine biomass. We analyze deferring the immediate sale of this energy in the spot market to store it in the form of gas for future sale. We consider that once a storage tank reaches maximum capacity, the producer will sell all of the energy generated in either the spot market or regulated market for a minimum selling price. The farm we chose to study already produces energy and sells it in the spot market. The real options methodology was chosen to consider managerial flexibility and the uncertainty of the energy price. Additionally, considerations were made for the stochastic process applied to the price time series of the weekly Differences Settlement Price (Preço de Liquidação das Diferenças in Portuguese) of low voltage power in southern Brazil. Our results indicate that the storage option has value for the power generation from swine biomass.

38-53

Authors: Thaís Nery Assunção, Renata Turola Takamatsu, Valéria Gama Fully Bressan

This research aims to analyze the announcement impact of the 579 act in stock prices in the Brazilian electricity sector. The way the market reacts to information supports investors and assists assets’ analysis and the process of investment portfolio formation. An event study was conducted to assess whether the stocks’ prices and returns have changed after the information was released to the market. The results provided evidence of a semi-strong market efficiency, since prices reacted to the publicly available information, assimilating the new information and then regressing to normality. Specifically, there was, on average, a negative reaction, with a significant drop in prices and stock returns two days after the announcement. However, after the third day, the information was absorbed by the market, and we no longer could detect a negative abnormal returns. Thus, we can conclude that the 579 act was considered a relevant piece of information about the electricity sector, changing stock returns behavior when it was released.

71-86

Authors: Ana Claudia Afra Neitzke, Giliard Peres Gonçalves, Renata Mendes de Oliveira, Débora Gomes Machado, Artur Roberto de Oliveira Gibbon

From the beginning of construction of oil platforms in the country, the Brazilian market is absorbing the riches that these originate. The cities where the Polo Naval is located tend directly to absorb the financial and economic impacts generated by the installation of the marine industry. The Rio Grande city is the target of the changes caused by the Polo Naval installation. In this context, the general objective of the study was to determine how environmental costs are treated in a shipyard in the southern of Rio Grande do Sul. In order to achieve the proposed goal, operationalized is a case study in a private company in the industry shipbuilding. This research, exploratory, made use of multiple sources of evidence. Thus, the data were collected through document analysis, semi-open interviews and systematic observation. The results indicate that the organization has analyzed environmental costs, mainly related to the maintenance of environmental processes. Moreover, it infers that the organization needs to consider the theme of environmental costs through a program of environmental policies and, consequently, develop a mechanism for the settlement, subject to use fees from the cost center approach.