Assessing Japan's energy–environment nexus: Impacts of electricity use, fossil fuels, population dynamics and renewable energy transition
日本のエネルギーと環境の連関：電力使用、化石燃料、人口動態、再生可能エネルギー転換の影響評価 (AI 翻訳)
Vu Ngoc Xuan, Nguyen Thi Phuong Thu, Thi Lan Anh Nguyen, Huong Giang Luong
🤖 gxceed AI 要約
日本語
本研究は2000～2023年の日本の時系列データを用い、電力消費、化石燃料、再生可能エネルギー、人口、経済成長とCO2排出の関係を分析。共和分やVECM等の手法で、長期的に再生可能エネルギーが排出削減に寄与し、化石燃料が排出を増加させることを確認。日本のカーボンニュートラル達成には再生可能エネルギーの拡大とエネルギー効率改善が重要と示唆。
English
This study analyzes Japan's energy-environment nexus using time-series data from 2000-2023. Employing cointegration and VECM methods, it finds that renewable energy significantly reduces CO2 emissions in the long run, while fossil fuel consumption increases them. The results support accelerating renewable deployment and energy efficiency improvements to achieve Japan's carbon neutrality goals.
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
日本のカーボンニュートラル政策（2050年目標）や第7次エネルギー基本計画の議論に直接関連。再生可能エネルギーの導入拡大の効果を実証的に示し、政策立案や企業のエネルギー戦略に示唆を与える。
In the global GX context
This empirical evidence on Japan's energy transition contributes to global understanding of renewable energy's role in decarbonization. It aligns with international efforts under the Paris Agreement and provides insights for countries with similar demographic challenges.
👥 読者別の含意
🔬研究者:Provides robust econometric evidence on the energy-environment nexus in Japan, useful for comparative studies.
🏢実務担当者:Highlights the importance of renewable energy adoption and energy efficiency for corporate sustainability strategies.
🏛政策担当者:Supports policies accelerating renewable energy deployment and reducing fossil fuel dependence to meet carbon neutrality targets.
📄 Abstract（原文）
This study examines the dynamic relationships among electricity consumption (EC), fossil fuel (FF) consumption, renewable energy (RE) adoption, population (POP), population density (POD), economic growth (GDP), and environmental pollution (CO 2 emissions) in Japan over the period 2000–2023. Annual time-series data are analyzed using Johansen cointegration, the Vector Error Correction Model (VECM), Dynamic Ordinary Least Squares (DOLS), Fully Modified Ordinary Least Squares (FMOLS), Granger causality tests, impulse response functions, and forecast error variance decomposition. The empirical results confirm the existence of a long-run equilibrium relationship among the variables. The VECM results indicate that deviations from long-run equilibrium are corrected over time, while the long-run estimates show that higher EC, FF use, and EG increase CO 2 emissions. In contrast, RE consumption significantly reduces environmental pollution. POP density is found to intensify energy demand and environmental pressure, although Japan's demographic transition moderates overall energy consumption in the long run. Granger causality analysis reveals bidirectional causality between EC and EG, supporting the feedback hypothesis. In contrast, FF consumption Granger-causes environmental pollution, while RE mitigates emissions. Impulse-response and variance-decomposition analyses further demonstrate that shocks to FF consumption generate persistent increases in CO 2 emissions, whereas shocks to RE gradually reduce environmental degradation over time. These findings suggest that accelerating RE deployment, reducing dependence on FFs, improving energy efficiency, and strengthening smart-grid infrastructure are essential to achieving Japan's carbon-neutrality objectives while sustaining long-term EG.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1016/j.indic.2026.101443first seen 2026-08-16 04:51:14
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