The complementarity between renewable generation profiles has been widely explored in the literature. Notwithstanding, complex interactions between regulatory and economic frameworks add interesting challenges and opportunities for hybrid power plant investors, regulators, and planners. Focusing on the Brazilian power market, we study the alignment of incentives between the economically-optimized strategy of hybrid power plant investors and the efficient utilization of the transmission resources. To do that, we propose a decision model that co-optimizes the risk-adjusted strategy of a hybrid power plant owner comprising (i) the forward-market involvement, (ii) the contracted amount of network access, and (iii) the share of renewable sources composing the hybrid power plant. We also propose adjusting the current regulatory framework to consider a unified calculation for the Firm Energy Certificates of non-controllable renewable power plants, including hybrid units. Based on that, we ensure a non-discriminatory regulatory framework for renewables acknowledging the diversity of generation profiles that hybrid units may have due to their optimal hybridization shares and network-access contracting strategies. A case study using realistic data from the northeastern region of the Brazilian power system showcases strong economic incentives for hybridization with reduced transmission resource utilization.

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关于巴西可再生能源混合发电厂的监管和经济激励措施


可再生能源发电概况之间的互补性已在文献中得到广泛探讨。尽管如此，监管和经济框架之间的复杂互动为混合动力发电厂投资者、监管机构和规划者带来了有趣的挑战和机遇。我们专注于巴西电力市场，研究了混合动力发电厂投资者的经济优化战略与输电资源的有效利用之间的激励措施的一致性。为此，我们提出了一个决策模型，该模型共同优化了混合动力发电厂所有者的风险调整策略，包括 （i） 远期市场参与，（ii） 合同规定的网络访问量，以及 （iii） 构成混合动力发电厂的可再生能源份额。我们还建议调整当前的监管框架，以考虑对包括混合动力机组在内的非可控可再生能源发电厂的 Firm Energy Certificates 进行统一计算。基于此，我们确保为可再生能源建立一个非歧视性的监管框架，承认混合动力机组由于其最佳的混合动力份额和网络接入合同策略而可能具有的发电结构的多样性。使用巴西电力系统东北部地区的真实数据的案例研究展示了混合动力和降低输电资源利用率的强大经济激励。