Análise da eficiência de empresas do setor de energia elétrica no Brasil

Abstract

The energy sector is important for the economy and the society, as it is essential to produce assets and services in a country. Therefore, it is necessary that the companies that play in the sector work efficiently in order to offer quality service . This study mainly aims to assess the efficiency of some companies in the sector through the methodology Data Envelopment Analysis (DE A), using the model DEA CCR oriented at input . T he companies analyzed were CEEE, CEMIG, COPEL, CELG, CHESF, Eletronorte, CGT Eletrosul, CTEEP, TAESA and FURNAS, from 2013 to 2015. Firstly, the model was applied , so it was possible to identify which companies were efficient. Malmquist I nde x was also used to analyze productivity variation in that same period. Secondly, the companies were divided into three groups in accordance with the area of expertise as genera tion, distribution and transmission with the purpose of identifying with group was the efficient one. The results showed as the efficient ones in the first analysis: CEMIG, COPEL, CTEEP, FURNAS and TAESA, representing 50% of the sample. Among the efficien t companies, only COPEL was away from the efficient frontier according to Malmquist I ndex. The most efficient group was with the one that included companies that work in the transmission area and then considered as benchmark for the others. The companies CEMIG, FURNAS, TAESA, CTEEP were established as benchmark for the sample. Further studies with longer periods and larger samples are suggested.