Which Energy-Transition Policies Improve Energy Security? Evidence from Policy-Instrument Decomposition and Cross-Country Panel Models
エネルギー転換政策のうちどれがエネルギー安全保障を向上させるか？政策手段の分解とクロスカントリーパネルモデルによる証拠 (AI 翻訳)
Bartosz Kozicki, Nataliya Stoyanets, Grigor NAZARYAN, Marcin Jurgilewicz, Aleksandra Skrabacz, Oleksii Havrylenko
🤖 gxceed AI 要約
日本語
49カ国・約23年間のパネルデータを用い、エネルギー移行政策がエネルギー安全保障に与える影響を分析。政策の厳格さ指標は統計的に有意でない一方、再生可能エネルギー発電量の増加と化石燃料消費税が安全保障と正の関連を持つことを示した。政策手段の分解により、炭素税などの具体的な財政手段が重要であると結論付けている。
English
Using a 49-country panel (2000–2023), this study decomposes energy-transition policy instruments to test their effect on national energy security. Aggregate policy stringency is not significant; renewable electricity deployment and fossil-fuel excise taxes show the strongest positive associations, suggesting that actual implementation and fiscal design matter more than formal policy ambition.
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
日本のエネルギー政策はS+3E（安全性・安定供給・経済性・環境適合）の枠組みで評価されるが、本稿はそのうち安定供給（エネルギー安全保障）に着目し、政策手段の実効性を国際比較で示す。再生可能エネルギーの実装と税率設計が重要であるという示唆は、日本の次期エネルギー基本計画やGX推進戦略にも示唆を与える。
In the global GX context
This paper contributes to the global policy debate by showing that formal policy stringency matters less than actual renewable deployment and well-designed fiscal instruments such as excise taxes. It offers cross-country evidence useful for jurisdictions reconciling decarbonisation with energy security, complementing the transition-finance and ISSB disclosure agenda.
👥 読者別の含意
🔬研究者:Provides a rigorous policy-instrument decomposition methodology and cross-country evidence on energy security outcomes that can inform future empirical work.
🏛政策担当者:Highlights that fiscal instruments and renewable deployment, not aggregate policy stringency, drive energy security—relevant for designing effective transition policy packages.
📄 Abstract（原文）
Energy security has become a central policy challenge because decarbonisation must be achieved without weakening the reliability, affordability and resilience of national energy systems. This article examines whether and how energy transition policies contribute to national energy security, with particular attention to aggregate policy stringency, individual policy instruments, and renewable electricity deployment. The analysis uses a panel of 49 countries over 23 observed years between 2000 and 2023, excluding 2002, comprising 1127 country-year observations, and applies two-way fixed-effects models with Driscoll–Kraay standard errors. The aggregate Energy Policy Stringency Index has a positive but statistically insignificant coefficient in the contemporaneous model (0.421) and remains insignificant with one-, two- and three-year lags (0.187, 0.128 and –0.026, respectively). Renewable electricity generation is consistently positive and significant, with coefficients ranging from 0.071 to 0.090, indicating that actual renewable deployment is more closely associated with energy security than formal policy stringency. Policy-instrument decomposition shows that fossil fuel excise taxes have the strongest positive association, with coefficients from 1.554 to 1.082 in full-instrument models and from 1.614 to 1.077 in one-by-one robustness checks. Air emission standards have delayed positive effects, while some renewable-support and cross-sectoral tools show mixed results, indicating dependence on design and system readiness.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/en19133223first seen 2026-07-31 05:09:36
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