Abstract: This study investigates the divestiture of transmission control from vertically-integrated power producers, aimed to maintain non-discriminatory access of the transmission network. I ask whether the vertical separation is sufficient to enhance how efficiently production is allocated among generators (i.e., regional production efficiency). Using a difference-in-difference strategy, I compare the treated region, Southwest Power Pool (SPP), with a control region, where no restructuring activities were implemented. Based on robust empirical results, I fail to find significant market wide evidence of improvement in regional production efficiency associated with the vertical separation of transmission control. However, looking into subgroups of generators, I find mixed evidence of cost savings via reallocation of production resources: (1) coal units are dispatched more efficiently after the restructuring; (2) this is not true for two types of gas units with different combustion technologies and cost efficiency.

中文翻译：

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电力行业传动控制与区域生产效率的垂直分离

摘要：本研究调查了垂直整合电力生产商的输电控制权剥离，旨在维持输电网络的非歧视性接入。我问垂直分隔是否足以增强发电商之间的生产分配效率（即区域生产效率）。使用差异差异策略，我将处理区域西南发电池（SPP）与未实施重组活动的控制区域进行了比较。基于可靠的经验结果，我未能找到重要的市场证据，表明与变速箱控制的垂直分离相关的区域生产效率得到了改善。但是，查看发电机子组，我发现通过重新分配生产资源节省成本的证据不一：（1）改制后煤炭单位的调度效率更高；（2）对于具有不同燃烧技术和成本效率的两种燃气单元，情况并非如此。