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Itajubá, Brazil

Santos P.E.S.,TR Solucoes | Leme R.C.,Federal University of Itajuba | Galvao L.,TR Solucoes
Energy Policy

This paper discusses, in terms of Brazil's situation, the use of a nonlinear pricing approach in the application of a two-part tariff to electricity distribution networks. The principles that uphold charging access and usage are to optimize energy systems that are based on a generation technology mix. Such a pricing approach is used in Brazil, where the generation mix is mainly hydro-generation. This study shows that, in a case like Brazil's, a two-part tariff may be used as a tool for network optimization. The paper presents a design for a two-part tariff for a distribution system with varying consumer behavior. To validate the discussion, we offer a numerical example. Finally, remarks are given concerning pricing access and usage for low voltage level consumers. © 2011 Elsevier Ltd. Source

Steele Santos P.E.,TR Solucoes | Marangon Lima J.W.,Federal University of Itajuba | Leme R.C.,Federal University of Itajuba | Leite Ferreira T.G.,Brazilian Association of Energy Self Generation
Energy Economics

This paper presents an approach for calculating a tariff for electrical energy distribution systems. The methodology is similar to the standard tariff-calculation method used in Brazil. The approach combines the concepts of time-of-use tariffs and Ramsey prices. The process, initially designed for energy consumers, can be used to establish tariffs for micro-generation units. The resulting regulated distribution tariffs, for both consumer and generation units, has an hourly signal associated with long-run marginal costs. Moreover, while minimizing any loss of social benefits, the tariffs comply with the revenue reconciliation constraint. The proposed approach is applied to a real Brazilian distribution system and compared to the current procedure used by the Brazilian Electricity Regulatory Agency. © 2011 Elsevier B.V. Source

Leme R.C.,Federal University of Itajuba | Paiva A.P.,Federal University of Itajuba | Steele Santos P.E.,TR Solucoes | Balestrassi P.P.,Federal University of Itajuba | Galvao L.D.L.,TR Solucoes
Energy Economics

Benchmarking plays a central role in the regulatory scene. Regulators set tariffs according to a performance standard and, if the companies can outperform such a standard, they can retain the gains observed by such outperformance. Efficiency performance is usually assessed by comparison (or a benchmark) against either other companies or the company's own historical performance. This paper discusses the impact of environmental variables on the efficiency performance of electricity distribution companies. Indeed, such variables, which are argued to be unmanageable, may affect the electricity utilities' performance. Thus, this paper proposes a simulation methodology based on design of experiment philosophy for statistically testing environmental variables and the interactions among them, enabling regulators to build the best suited semi-parametric two-stage model of electricity utility benchmarking analysis. To demonstrate the power of the proposed approach, experimental simulations are carried out using real data published by Brazil's regulator. The results show that environmental variables may impact efficiency performance linearly and nonlinearly. © 2014 Elsevier B.V. Source

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