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Energy generation in Brazilian isolated systems: Challenges and proposals for increasing the share of renewables based on a multicriteria analysis
Energy for Sustainable Development ( IF 5.5 ) Pub Date : 2021-01-21 , DOI: 10.1016/j.esd.2020.12.007
Gustavo Pires da Ponte , Rodrigo Flora Calili , Reinaldo Castro Souza

Concentrated in the northern region of Brazil, the country's 250 isolated systems represent around 1% of the national energy consumption and have been historically supplied by diesel power plants, an expensive solution that relies on complicated logistics and is responsible for high GHG emissions. Although many publications indicate that renewables are already a cost-effective solution, especially for economies dependent on expensive fuels, the conventional generation is still the main source of electricity on isolated systems, even in recent projects. This paper presents suggestions of public policies to stimulate the use of environmentally friendly energy sources at off-grid places in Brazil and discusses the probable reasons why this transition has not been driven yet, including barriers related to subsidies, energy tariffs and tax rules. To evaluate these policies, a multicriteria decision model was developed using the AHP (Analytical Hierarchy Process) and TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution) methods, combined with fuzzy logic. Eighteen criteria were assessed, and ten specialists were interviewed. The study concluded that pilot projects of hybrid power plants, combining diesel engines and renewable technologies, would be the most effective policy. Other relevant policies pointed as relevant were the simplification of environmental licensing for projects based on renewables and the adoption of a more mandatory energy planning.



中文翻译:

巴西孤立系统中的能源发电:基于多标准分析的提高可再生能源份额的挑战和建议

该国的250个隔离系统集中在巴西北部地区,约占全国能源消耗的1%,历史上一直由柴油发电厂提供,这是一种昂贵的解决方案,依赖于复杂的物流,并导致高温室气体排放。尽管许多出版物表明,可再生能源已经是一种具有成本效益的解决方案,尤其是对于依赖昂贵燃料的经济体而言,常规发电仍然是隔离系统的主要电力来源,即使在最近的项目中也是如此。本文提出了刺激巴西离网地区使用环保能源的公共政策建议,并讨论了尚未推动这种过渡的可能原因,包括与补贴,能源关税和税收规则有关的壁垒。为了评估这些政策,使用了AHP(层次分析法)和TOPSIS(与理想解决方案相似的优先顺序技术)方法,并结合了模糊逻辑,开发了多准则决策模型。评估了18条标准,并采访了10位专家。该研究得出的结论是,结合柴油发动机和可再生技术的混合动力电厂试点项目将是最有效的政策。指出相关的其他相关政策是简化基于可再生能源的项目的环境许可并采用更多 评估了18条标准,并采访了10位专家。该研究得出的结论是,结合柴油发动机和可再生技术的混合动力电厂试点项目将是最有效的政策。指出相关的其他相关政策是简化基于可再生能源的项目的环境许可并采用更多 评估了18条标准,并采访了10位专家。该研究得出的结论是,结合柴油发动机和可再生技术的混合动力电厂试点项目将是最有效的政策。指出相关的其他相关政策是简化基于可再生能源的项目的环境许可并采用更多强制性能源计划。

更新日期:2021-01-22
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