Higher efficiency and reliability of the electric system are important goals to be achieved. The increasing growth and importance of intermittent renewable energy sources and its massive incorporation into the electricity grid, given the efforts to diversify the energy mix and reduce the carbon emissions, bring new challenges to the sector, such as the need of higher levels of flexibility. In this context, demand-side flexibility measures come to light as a way of improving system reliability and, at the same time, defer the need for investments in the expansion of distribution and transmission grids, reducing the demand for additional generation capacity and allowing the shave of peak demand, resulting in a reduction of electricity costs. Among these measures, demand response figures as one of great importance. It is based on electricity consumers’ capability to respond to price signals, increasing the consumers’ role in ensuring system security in a cost effective way. The objective of this article is to examine some of the main challenges and opportunities for enabling demand response programs, taking some lessons from the international experience. An additional effort is to focus on Brazilian case. The methodology consists of bibliographic and documental review, with the analysis of challenges and opportunities, followed by an investigation of demand response programs in Brazil. This paper was developed under the framework of a project supported by the ANEEL’s R&D Program. It was found that technological requirements of demand response can be a great obstacle, as observed in some of the European countries cost-benefit analysis and in the Brazilian case. The Brazilian experience is by all means only incipient and takes advantage of a small part of the full demand response potential, but even in this condition, shows some positive results in efficiency.
Electric integration is a topic discussed and promoted worldwide due to the advantages for the countries involved. In order to enjoy these advantages several countries, mainly in Europe, have created regional electricity markets. For South America countries the creation of a regional electricity market is still a distant option due to economic and social asymmetries and, especially, because of incompatibilities in the regulatory framework and in energy trading mechanisms. This paper aims to analyze the electrical integration process in the South America, concentrating in Brazil the central focus of the analysis. The main constraints of Brazil’s regulatory and electricity trading model are also analyzed, highlighting that the last restructuring process of the electric sector (2003-2004) has defined a commercial model where financial contracts of “physical guarantee” are traded and not electricity itself, and where the power plants do not have autonomy over their production. The characteristics and specificities of the Brazilian model determine boundaries and conditions that must be considered to enable international electricity trade. The already existing integration projects are also analyzed highlighting that these projects were developed under special conditions for taking advantage of specific opportunities without the support of a strategic integration policy. Additionally, the paper addresses two other electrical integration projects that are under discussion, the binational hydroelectric power plants between Brazil-Argentina and between Brazil-Bolivia. The paper concludes that electrical integration with direct participation of Brazil is more feasible for binational projects and short-term surplus trade because of the differences between the Brazilian market design and the other countries market design.
The Annual Energy Production (AEP) estimated over the lifecycle of the project is one of the most important factors to determine the profitability of wind power project. The methods used to estimate the AEP in a wind farm requires an assessment of the uncertainties associated at all steps. To finance a wind power project, banks requires that the developer submit the uncertainties related to the estimation of AEP’s wind farm, to mitigate errors and increase the project reliability. The appropriate assessment of uncertainties is critical to determine the feasibility and risk in developing a wind energy project. This study presents the main sources of uncertainty in the energy estimate process in wind farms. This information is important for the correct analysis of the economic viability of the project.
The promotion of a reliable and sustainable power system has as key drivers the development of smart grids associated with demand-side management schemes, diffusion of electric mobility, accommodation of larger shares of distributed generation, in particular microgeneration and the introduction of storage systems. In addition, these technological development vectors represent new business opportunities for several players (utilities, retailers, ESCOs, aggregator entities, etc.), which should be considered by regulatory guidelines accounting for technical efficiency, economic feasibility and tariff affordability. The technical and economic characteristics of the electricity sector (capital intensive, undifferentiated product, regulated tariffs, almost inelastic demand, need of instantaneous balance between supply and demand, etc.) do not induce that the process of technological innovation happens in an endogenous manner within the sector dynamics. Therefore, public policies have a role to play in this process. This communication presents an approach using Problem Structuring Methods to frame the problem of analyzing and evaluating technological innovations and associate incentive policies in the electricity sector. The results of this structuring phase using Soft Systems Methodology suggest a large number of issues that were organized as a hierarchy of objectives. These objectives will correspond to the criteria of a Multicriteria Decision Analysis methodology devoted to assessing the potential courses of action promoting technological innovation. This methodology should provide decision support to policy and decision makers to shape policies aimed at fostering more reliable and sustainable electricity systems.
The transmission network is the first link between large power generation facilities and electricity customers. It supplies energy at high voltages to substations, where the energy is distributed via the distribution network. The transmission network today operates with a high level of reliability, but presently a variety of technologies offers the possibility of great improvement in system performance. Sophisticated new monitoring systems may reduce the likelihood of system failures and disruptions that cause serious economic and social consequences. Emerging efficient technologies may also help to solve network expansion constraints, including difficulties to install new transmission lines and to incorporate growing participation of intermittent energy plants, like wind and solar. This paper starts presenting the status and perspectives of the Brazilian transmission sector showing the high level of investment planned until 2024 – 60% cumulative growth of line extensions and the same 60% rate for transformation capacity. In the second part the paper presents the emerging technologies and the potential opportunities it offer to increase, among other factors, the energy quality, O&M structure, availability and reduction of technical losses. These advantages impact not only for new assets but also for the existing ones. Considering the existing assets the paper starts a discussion about the regulatory framework ant the right economic signals to promote investment in innovation and automation. The paper then addresses the emerging regulatory of OFGEM in UK and the existing regulatory barriers that still exists internationally and in Brazil. The paper concludes by identifying an opportunity for developing a regulatory R&D project to deeply analyze this subject and to propose a new regulatory framework to promote an economical feasible innovation process for the Brazilian transmission sector. In the last part the paper presents the guidelines and structure of the project GESEL is starting to develop in the scope of the Brazilian ANEEL regulated R&D program.
O artigo, que faz parte do livro “Integração Energética Regional: Desafios Geopolíticos e Climáticos”, editado pela Fundação Konrad Adenauer (KAS), procura apontar algumas das razões pelas quais o Brasil é um ator fundamental no processo de integração elétrica da região sul-americana, embora não seja ainda possível pensar na constituição de um mercado comum de energia, pelo menos no médio prazo. Na primeira parte destacam-se as razões pelas quais não é possível viabilizar um mercado comum de energia elétrica na América do Sul no médio prazo, ressaltando as limitações impostas pelo próprio modelo brasileiro. Na segunda seção destacam-se as experiências de integração do Brasil com os países da região e o papel que este tem como catalizador do processo na América do Sul. Por fim, a conclusão aponta que embora o próprio modelo brasileiro seja um entrave à criação de um mercado comum de energia elétrica, o Brasil tem um papel estratégico e fundamental no avanço do processo de integração elétrica regional.
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Resumen en español:
El artículo busca señalar algunas de las razones por las cuales Brasil es un actor fundamental en el proceso de integración eléctrica de la región, aunque todavía no sea posible pensar en la conformación de un mercado eléctrico común, al menos en el medio plazo. Para ello, este trabajo se divide en tres secciones. En la primera parte se destacan las razones por las cuales no es posible viabilizar un mercado común de energía en América del Sur, por lo menos en el a mediano plazo, resaltando las limitaciones impuestas por el propio modelo brasilero. En la segunda sección, se destacan las experiencias de integración de Brasil con los países de la región y el papel que este tiene como catalizador del proceso en América del Sur. Finalmente, la conclusión señala que aunque el propio modelo brasilero sea un obstáculo para la creación de un mercado común de energía eléctrica, Brasil ejerce un papel estratégico y fundamental en el avance del proceso de integración eléctrica regional.
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Abstract in english:
The article seeks to point out some of the reasons why Brazil is a key player in the energy integration process of the region, although it is not yet possible to think of a common electric market, at least in the medium term. Therefore, this paper is divided into three sections. The first part presents the reasons why it is not possible to structure a common electric market in South America, at least in the medium-term, highlighting the limitations imposed by the Brazilian model. The second part presents the integration experiences of Brazil with its neighbors and the important role it plays in this process in South America. Finally, the conclusion points out that although the Brazilian model is an obstacle for the conformation of a common electric market, Brazil plays a strategic and key role in the progress of the regional energy integration process.
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Slides da apresentação de Luiz Ozório na Conferência Internacional: Potencialidades, Oportunidades e Desafios da Integração Elétrica na América do Sul realizada nos dias 26 e 27 de novembro de 2015, em Foz do Iguaçu.
Slides da apresentação de Nelson Hubner e Roberto Brandão na Conferência Internacional: Potencialidades, Oportunidades e Desafios da Integração Elétrica na América do Sul realizada nos dias 26 e 27 de novembro de 2015, em Foz do Iguaçu.
Slides da apresentação de Roberto Brandão na Conferência Internacional: Potencialidades, Oportunidades e Desafios da Integração Elétrica na América do Sul realizada nos dias 26 e 27 de novembro de 2015, em Foz do Iguaçu.
Tradicionalmente os esquemas de integração regional na América do Sul são regidos pelo modelo jurídico do intergovernamentalismo. As principais características de tal modelo são: a primazia da vontade dos Estados na condução do processo integracionista; e o baixo grau de institucionalização jurídica em favor da prevalência da negociação diplomática entre os Presidentes da região, a chamada “diplomacia presidencial”. O intergovernamentalismo é adotado, da mesma forma, no campo da integração energética, que é baseada essencialmente em tratados internacionais bilaterais de infraestrutura entre os países da região, sem a criação de instituições e normas comuns a todos eles. O presente artigo tem por objetivo avaliar os benefícios e as deficiências do modelo jurídico de integração energética adotado na América do Sul. Para qualquer região do globo a energia é fonte de importância política, econômica e geoestratégica. Por isso, a relevância de estudar o melhor modelo jurídico-institucional para o seu aproveitamento comum pelos países de determinada região. Na América do Sul, apesar da abundância e diversidade de potencial energético, a falta de institucionalização exerce grande influência sobre o processo de integração. Por outro lado, a flexibilidade institucional e normativa permite o surgimento de experiências diversificadas, para o desenvolvimento da integração energética no continente sul-americano.
(Publicado em outubro de 2015)