CRITICAL METALS IN THE ENERGY TRANSITION: SUPPLY CHAIN CONCENTRATION, GEOPOLITICAL RISK, AND STRATEGIC VULNERABILITIES
エネルギー転換における重要金属：サプライチェーンの集中、地政学的リスク、戦略的脆弱性 (AI 翻訳)
Andranik Arakelyan, Michael Tamvakis
🤖 gxceed AI 要約
日本語
本論文は、リチウム、コバルト、ニッケル、銅の重要金属に焦点を当て、エネルギー転換におけるサプライチェーンの集中度と脆弱性を分析。ハーフィンダール・ハーシュマン指数を用いて採掘・精製段階の集中度を定量化し、特にコバルトとリチウムの精製段階におけるボトルネックの深刻さを明らかにした。結果は、金属ごとにリスクが異なり、供給安全保障には上流だけでなく精製能力の多様化が重要であると示唆する。
English
This paper examines the strategic role of lithium, cobalt, nickel, and copper in the energy transition, using HHI to measure concentration in mining and refining. It finds refining often presents a greater bottleneck than mining, with cobalt and lithium being most vulnerable. The study concludes that supply security requires diversification of downstream processing capacity, not just raw material access.
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
日本は重要金属の多くを輸入に依存し、特に精製工程で中国への依存が大きい。本論文の分析は、日本のGX戦略におけるサプライチェーン強靭化策（例えば、鉱山投資やリサイクル推進）の優先順位付けに直接的な示唆を与える。
In the global GX context
Globally, this paper contributes to growing concerns over critical mineral supply chains amid geopolitical tensions and clean energy deployment targets. It provides a clear, quantitative framework for identifying bottlenecks and underscores the need for diversified refining capacity, relevant to EU Critical Raw Materials Act, US IRA, and Japan's resource security strategies.
👥 読者別の含意
🔬研究者:Provides a comparative HHI-based methodology for assessing supply chain concentration across multiple critical metals, useful for further empirical work on resource security.
🏢実務担当者:Helps corporate sustainability and procurement teams identify which metals and processing stages pose highest supply risk for renewable energy and EV production.
🏛政策担当者:Highlights that refining capacity is a more urgent policy target than mining for supply resilience, informing strategic stockpiling and investment incentives.
📄 Abstract（原文）
This article examines the strategic role of critical metals in the global energy transition, with a focus on lithium, cobalt, nickel, and copper. The study applies a mixed-method approach combining qualitative comparative case study analysis with Herfindahl–Hirschman Index (HHI) calculations for mining and refining concentration. The findings show that critical metal supply chains are characterized by uneven and highly concentrated structures, with refining often representing a more serious bottleneck than mining. Cobalt appears as the most structurally vulnerable metal due to extreme concentration at both stages, while lithium shows especially high dependence on refining capacity. Nickel also displays significant concentration risks, whereas copper, despite a more diversified mining base, remains exposed through downstream concentration. The results suggest that critical metals should not be treated as a homogeneous group and that their markets are increasingly shaped by geopolitical risk, industrial policy, and strategic competition. The article concludes that supply security in the energy transition depends not only on access to raw materials, but also on the diversification and resilience of downstream processing and refining capacity.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.55528/18292828-2026.2-67first seen 2026-05-23 04:55:25 · last seen 2026-05-27 04:31:03
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