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Título:TECHNICAL AND ECONOMICAL ASPECTS OF WEMS: AN INTERNATIONAL COMPARISON AND MAIN CONTRIBUTIONS FOR IMPROVEMENTS IN BRAZILInstituição:PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO - PUC-RIO Autor(es):LUIZA BASTOS RIBEIRO
The Brazilian power-market design features were decided based on the system s physical and economic characteristics observed in the 90s, when the system was remarkably hydro-dominated and the economy experienced large GDP growth rates. Nowadays, the power system s capacity is still hydrodominated, albeit with a significantly lower hydro participation (64 percent), has experienced a sharp growth in variable renewable energy integration, and has faced the impacts of different economic crises. Therefore, some of the approximations and assumptions adopted for the regulatory framework based on the original system s condition and economic reality are not valid anymore. Failing to adapt the regulatory framework to the current system and economic realities may provide poor market signals, possibly threatening the long-run
system sustainability. Based on the continued flaws experienced in this country, the need for a market-design review is critical and urgent in Brazil. The public consultation named CP 33 proposed a handful agenda for the Brazilian power sector modernization, which is the backbone of some bills already in progress. Despite the consensus on the modernization agenda, especially on a more short-term-based market-oriented approach, there are still many concerns and questions on which market features should be adopted. The vast literature and international experience in the subject notwithstanding, each system s particularities, challenge any simplistic attempt to match the Brazilian case with previously reported experiences. Thus, this work aims to 1) define a general market design nomenclature and classify relevant market structures, 2) draw a systematized panorama of the physical characteristics that have influenced the selection of different market designs and mechanisms in other similar markets, and 3) compare the Brazilian market design, within a common language using 1) and 2), to the international experience. Markets from South and North America, Europe, and New Zealand were selected to present comparisons between them and Brazil. Based on that, we contribute with an updated and standardized panorama of a few relevant market designs and structures. Additionally, we raise awareness and discuss the relevant lessons learned from the international experience applicable to support and foster the Brazilian market modernization agenda.