Journal of Public Economics · 2026 · [{"name": "Gaurav Doshi", "affiliation": ["Georgia Institute of Technology"]}]
中文摘要
我研究电网扩张对批发电力市场中长期可再生能源投资溢出效应的影响。利用风电项目选址的离散选择模型和双重差分设计，我分析了得克萨斯州一个大规模电网扩张项目。结果显示，在拥有电网基础设施的地区，风电投资每年带来15.6亿美元的减排收益，并使土地所有者年度支付增加1100万美元。然而，局部化的风电投资叠加有限的输电能力，近年来导致弃风上升，凸显了输电政策亟需采取长期规划方法。
• 输电扩张带来可再生能源的长期投资。
• 在得克萨斯州，进行电网扩张投资的县每年风电装机容量增加100兆瓦，产生每年15.6亿美元的避免排放收益。
• 土地所有者租赁支付每年增加1100万美元，创造了地方性私人收益。
• 输电能力不足情况下的局部化风电投资可能增加弃风，部分抵消减排收益。
Abstract
I study the impact of grid expansion on long-run renewable investment spillovers in wholesale electricity markets. Using a discrete choice model of wind project location and a Difference-in-Difference design, I analyze a large-scale grid expansion project in Texas. Results show $1.56 billion per year in lower emissions and $11 million in increased annual payments to landowners due to wind investments in areas with grid infrastructure. However, localized wind investments coupled with limited transmission capacity have led to rising curtailments in recent years, highlighting the need for a long-term planning approach to transmission policy. • Transmission expansion leads to long-term investment in renewable energy. • In Texas, counties with investment in grid expansion saw 100 MW per year in higher wind capacity generating $1.56 billion per year in avoided emissions. • Landowner lease payments rose by $11 million per year, creating private local benefits. • Localized wind investment without sufficient transmission capacity can increase curtailment, partially offsetting emissions gains.