Research note: the resource constraint on the green transition
Renewables, electric vehicles and energy storage all depend heavily on specific minerals: lithium, cobalt, nickel, rare earths and others. The larger the green transition, the more concentrated demand for critical minerals becomes and the more prominent supply risks grow. A deep tension therefore appears in policy debate: transition goals require stable resource supply, while supply stability may be eroded by geopolitical competition and resource nationalism.
Concentration and fragility
Fragility comes from concentrated stages: a few countries dominate mining and processing of particular minerals, and interruption at any single stage transmits downstream. This concentration is historically formed — limited past demand and cost-driven clustering of processing capacity — but becomes a structural bottleneck when demand surges. Assessing fragility requires looking beyond reserves to processing capacity, substitutability and recycling potential.
Comparing policy instruments
Major economies have launched policy competition around critical minerals, with instruments falling into four groups:
- Supply side: incentives for domestic exploration, faster permitting and strategic reserves.
- Processing side: subsidies combined with export controls to reshape the geography of processing.
- Demand side: recycling standards, materials substitution research and efficiency requirements that reduce reliance on new extraction.
- International side: partnership agreements, investment screening and multilateral initiatives that manage the rule environment of cross-border supply chains.
Managing tension rather than eliminating it
Policy goals cannot be fully reconciled: accelerating the transition may intensify short-term supply competition, while strengthening domestic processing may slow global efficiency. A more realistic approach is to manage the tension rather than claim to remove it — diversifying supply sources, investing in recycling systems and maintaining transparent inventory data to reduce single-point dependence without abandoning the pace of transition. Policy effects should be tested with time-series data, not judged from policy texts.
Next steps
This note is a working paper of the technology policy research line. Next we will compile a comparison table of critical mineral policy instruments and track supply chain changes and policy effects for key minerals as an open resource.
Sources and version: v1.0 (2026-09).