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Analysis of electric distribution utilities efficiency levels by stochastic frontier in Brazilian power sector

2020; Elsevier BV; Volume: 76; Linguagem: Inglês

10.1016/j.seps.2020.100973

1873-6041

Mário Jorge Cardoso de Mendonça, Amaro Olímpio Pereira, Luis Alberto Medrano, José Francisco Moreira Pessanha,

Electricity Theft Detection Techniques

The regulatory power sector model in several countries determines tariff review forms based, among other things, on sharing efficiency gains with consumers. As these reviews have an important impact on consumers and distribution utilities, it is necessary that the adopted methodologies always be improved. To this end, this article assessed a Bayesian inference application in order to estimate a stochastic cost frontier considering temporal efficiency dynamics. Taking this point into consideration is essential, since studies carried out to assess power sector efficiency have neglected the fact that part of efficiency increases originate from scale gain due to market expansion, which occurs over time. The sample assessed herein is composed of panel data from 61 electric power utilities between 2003 and 2016. The results demonstrate that the tariff review is positively affected by distributor efficiency.