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走出黑暗,迈向光明?农村电气化的发展效应

Out of the Darkness and into the Light? Development Effects of Rural Electrification
Journal of Political Economy · 2024 · Fiona Burlig、Louis Preonas

中文摘要

目前全球仍有近10亿人无法获得电力。发展中国家正投入数十亿美元推进“最后一公里”电气化,但有关其经济影响的证据并不一致。我们以印度国家电气化项目RGGVY(拉吉夫·甘地农村电气化计划)为背景,估计农村电气化的发展效应,该项目覆盖了超过40万个村庄。采用断点回归和双重差分设计,我们估计RGGVY显著扩大了电力可及性。然而,实施3—5年后,该项目产生的经济影响有限。我们运用工具变量对意向处理估计进行尺度调整后发现,“全面电气化”会降低小村庄的福利,但在大村庄可实现33%的内部收益率。

Abstract

Nearly 1 billion people still lack electricity access. Developing countries are investing billions of dollars in “last-mile” electrification, although evidence on its economic impacts is mixed. We estimate the development effects of rural electrification in the context of India’s national electrification program, RGGVY (Rajiv Gandhi Grameen Vidyutikaran Yojana), which reached over 400,000 villages. Using regression-discontinuity and difference-in-differences designs, we estimate that RGGVY meaningfully expanded electricity access. However, the program generated limited economic impacts after 3–5 years. Scaling our intent-to-treat estimates using instrumental variables, we find that “full electrification” reduces welfare in small villages but has a 33% internal rate of return in large villages.
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