Welfare impact of subsidies in oligopolistic markets: Evidence from Japan's gasoline market

IF 9.2 2区经济学 Q1 ECONOMICS

Energy Policy Pub Date : 2025-07-09 DOI:10.1016/j.enpol.2025.114768

Eiji Satoh , Kaho Hirano , Taiga Sato , Eiki Shimada , Ayana Sumiyoshi , Satoshi Takahashi , Hiroshi Tamaki , Sora Yamamoto , Kakeru Yamaguchi

引用次数: 0

Abstract

This study empirically examines the welfare effect of government subsidies in Japan's oligopolistic gasoline market. We conducted a simulation analysis that incorporated the external costs associated with automobile use. The total deadweight loss from January 2022 to March 2024 was approximately 377.8 billion yen, which suggests that even in oligopolistic markets, lowering prices through subsidies worsens social welfare because of high external costs. Government policies to combat unprecedented gasoline price increases are not sustainable and should be terminated. Rather, gasoline prices should be increased to improve social welfare.

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寡头垄断市场补贴对福利的影响：来自日本汽油市场的证据

本研究实证检验了政府补贴在日本寡头垄断汽油市场的福利效应。我们进行了一个模拟分析，其中包括与汽车使用相关的外部成本。从2022年1月到2024年3月的总无谓损失约为3778亿日元，这意味着即使在寡头垄断市场，通过补贴降低价格也会因外部成本高而使社会福利恶化。政府对抗史无前例的汽油价格上涨的政策是不可持续的，应该终止。相反，应该提高汽油价格，以改善社会福利。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Energy Policy 管理科学-环境科学

CiteScore

17.30

自引率

5.60%

发文量

540

审稿时长

7.9 months

期刊介绍： Energy policy is the manner in which a given entity (often governmental) has decided to address issues of energy development including energy conversion, distribution and use as well as reduction of greenhouse gas emissions in order to contribute to climate change mitigation. The attributes of energy policy may include legislation, international treaties, incentives to investment, guidelines for energy conservation, taxation and other public policy techniques. Energy policy is closely related to climate change policy because totalled worldwide the energy sector emits more greenhouse gas than other sectors.