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Rare earth elements as strategic catalysts in the global energy transition: market dynamics, import dependence, and geopolitical implications

希土類元素は世界のエネルギー転換における戦略的触媒:市場動向、輸入依存、地政学的影響 (AI 翻訳)

Nurcan Kilinc-Ata, Bibin Xavier

Mineral Economics📚 査読済 / ジャーナル2026-06-10#エネルギー転換Origin: Global経営インパクト: 調達リスク対象セクター: cross_sector
DOI: 10.1007/s13563-026-00662-7
原典: https://doi.org/10.1007/s13563-026-00662-7
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🤖 gxceed AI 要約

日本語

希土類元素(REE)はクリーンエネルギー技術に不可欠だが、供給は中国などに集中している。この研究は24カ国のパネルデータを用いて、再生可能エネルギー導入や経済成長がREE輸入需要を短期的に増加させる一方、エネルギー効率向上が長期的に需要を抑制することを示した。政策への示唆として、資源効率戦略とサプライチェーンの多様化の重要性を強調している。

English

Rare earth elements (REEs) are critical for clean energy technologies but face supply concentration risks. This study uses panel data from 24 importing countries to show that renewable energy deployment and economic growth increase REE imports in the short run, while energy efficiency improvements reduce them in the long run. The findings highlight the need for resource efficiency strategies and diversified supply chains to enhance material security during the energy transition.

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

日本はREEの主要輸入国であり、EVや風力などGX技術のサプライチェーン確保が急務。本稿は輸入依存の構造的要因を実証し、資源効率向上や国内産業強化への政策インプリケーションを提供する。

In the global GX context

The paper addresses the geopolitical vulnerabilities of REE supply concentration, offering empirical evidence on the drivers of import dependence. It contributes to the global discourse on critical minerals and energy transition, providing insights for countries aiming to secure material supplies while scaling up renewables.

👥 読者別の含意

🔬研究者:Provides empirical elasticities of REE imports to clean energy indicators, useful for critical mineral demand modeling.

🏢実務担当者:Supply chain managers in renewable energy and EV sectors can use these findings to anticipate REE demand trends and develop diversified sourcing strategies.

🏛政策担当者:Governments should consider resource efficiency and domestic industrial policies to reduce import dependence and enhance material security.

📄 Abstract(原文)

Rare earth elements (REEs) are indispensable to the global clean energy transition, serving as critical inputs in technologies such as wind turbines, electric vehicles, and advanced batteries. At the same time, the REE supply chain remains highly concentrated, creating significant strategic, economic, and geopolitical vulnerabilities for importing countries. Against this backdrop, this study examines the conditional short-run and long-run dynamic associations between REE import demand and key clean energy transition indicators, with particular emphasis on the roles of renewable energy (RE) deployment, energy efficiency, and economic activity. Using a panel dataset of 24 REE-importing countries for 2000–2023, the study applies the cross-sectionally augmented autoregressive distributed lag (CS-ARDL) approach to capture both short-run and long-run dynamics while accounting for cross-sectional dependence and heterogeneity. The empirical results are interpreted as conditional dynamic relationships rather than as strict causal effects. The findings show that, in the short run, RE expansion, economic growth, and trade openness significantly increase REE imports. In contrast, improvements in energy efficiency and higher industrial value added are positively associated with import dependence. In the long run, RE deployment and carbon dioxide (CO₂) emissions continue to show positive dynamic relationships with REE imports, whereas energy efficiency continues to exert a significant negative influence, indicating that technological progress can play a moderating role in critical mineral demand over time. These results highlight the material intensity of the clean energy transition and the importance of complementing RE targets with resource efficiency strategies, domestic industrial strengthening, and diversified supply chains. The study contributes to the growing literature on critical minerals by providing new empirical evidence on the structural correlates of REE import dependence and by offering policy insights to enhance material security during the transition to a low-carbon economy.

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