欧州連合における炭素税政策の採用とエネルギー転換：環境的・社会経済的配当の準実験的分析
Carbon tax policy adoption and energy transition in the European Union: A quasi-experimental analysis of environmental and socio-economic dividends (原題)
Abdulai Enusah
🤖 gxceed AI 要約
日本語
本論文はEU24カ国・1990〜2019年を対象に、炭素税導入がエネルギー強度・再生可能エネルギー消費・人間開発指数（HDI）に与える影響を準実験的に検証した。Callaway and Sant'Anna（2021）とWooldridge（2025）の手法を併用し、炭素税導入がエネルギー強度を0.278単位低下させ、再エネ消費とHDIを有意に改善することを示す。効果は政策曝露が長い国ほど累積的に拡大し、二重配当仮説を条件付きで支持する。
English
This study quasi-experimentally evaluates the double dividend hypothesis across 24 EU member states (1990-2019), using Callaway-Sant'Anna and Wooldridge estimators. Carbon tax adoption reduces energy intensity by 0.278 units, raises renewable energy consumption, and improves the Human Development Index, with effects strengthening under sustained policy exposure. Findings support the double dividend hypothesis conditional on long-term implementation.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本では炭素税（地球温暖化対策税）やGX経済移行債、カーボンプライシングの設計議論が進行中であり、EUの長期曝露が環境・福祉両面の配当を生むという実証は、日本版カーボンプライシング制度設計や成長志向型CP導入の根拠として示唆に富む。
In the global GX context
Amid global carbon pricing expansion (EU ETS, CBAM, ISSB-linked disclosure), this paper provides robust quasi-experimental evidence that carbon taxes deliver joint environmental and welfare dividends only under sustained exposure—directly relevant to transition finance and policy credibility debates.
👥 読者別の含意
🔬研究者:炭素税の二重配当を異質性頑健なDiDで検証した手法・実証の参照点を提供する。
🏢実務担当者:炭素価格上昇が長期化する前提でのエネルギーコスト・再エネ調達戦略の重要性を示唆する。
🏛政策担当者:炭素税の効果は長期継続的な制度運用に依存するため、政策の予見可能性と段階的強化設計が鍵となる。
📄 Abstract（原文）
Carbon taxes are increasingly promoted as market-based instruments for advancing the energy transition, yet evidence on their joint environmental and socio-economic effects remains limited. This study provides a quasi-experimental evaluation of the double dividend hypothesis by assessing the effects of carbon tax adoption on energy intensity, renewable energy consumption, and the Human Development Index across 24 European Union member states over 1990-2019. Exploiting staggered adoption timing, the analysis applies the Callaway and Sant’Anna (2021) heterogeneity-robust difference-in-differences estimator and the Wooldridge (2025) extended two-way fixed effects framework, providing mutual robustness across two independent estimation strategies, dual control group specifications, and doubly robust inverse probability weighting. The results indicate that carbon tax adoption reduces energy intensity by 0.278 units on average (ATT = −0.278, p < 0.01), increases renewable energy consumption (ATT = 0.070, p < 0.01), and improves the Human Development Index (ATT = 0.021, p < 0.01), with effects that strengthen cumulatively for countries with longer policy exposure. Cohort-specific estimates reveal substantial heterogeneity: early adopters with over two decades of implementation exhibit welfare gains up to three times larger than late adopters, indicating that the socio-economic dividend materialises only under sustained exposure. These findings are corroborated by Driscoll-Kraay robustness checks, randomisation inference (p ≤ 0.014 for all three outcomes), and leave-one-out sensitivity analysis confirming that no single treated country drives the results. The study provides integrated quasi-experimental evidence that carbon taxation is directionally compatible with both environmental improvement and broader welfare gains within the EU context, supporting the double dividend hypothesis conditional on sustained policy exposure and effective institutional implementation.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.ssaho.2026.103383first seen 2026-09-11 04:57:55
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