US extends DoD-style price floors to allies as Project Vault and G7 stockpile pledges reshape the Western minerals toolkit

Summary

The US Department of Defense's price-floor agreement with MP Materials, a $110/kg NdPr guarantee backed by $400 million in DoD equity and a $150 million OSCP loan, became a template for allied minerals policy in early 2026. By February 4, Washington was negotiating equivalent floor arrangements with Mexico, the European Union and Japan, extending the demand-guarantee model to partners with processing capacity or mining assets. President Trump announced "Project Vault" on February 3, a $2.5 billion Strategic Resilience Reserve for critical minerals later appropriated at $2 billion under Section 20004 of the One Big Beautiful Bill Act. The DoD simultaneously issued solicitations for supply of 13 named critical minerals. By March, a Lynas-Japan offtake arrangement for separated rare earths from the Malaysia LAMP plant emerged, the first allied floor applied to a non-US producer. The G7 Évian declaration on June 17, 2026 pooled these bilateral moves into a multilateral commitment: $64 billion across 195 projects, a 60% single-country dependence ceiling for rare earth processing by 2030.

The split

The administration and allied governments frame price floors as a durable substitute for the "build-it-and-hope" model that left Western rare earth and battery-mineral capacity vulnerable to Chinese price suppression. Critics, including fiscal watchdogs and some congressional Republicans, argue guaranteed floors create contingent taxpayer liabilities that grow if Chinese prices fall and the floors are triggered; they note the MP Materials floor has not yet been triggered because NdPr market prices ran above $110/kg throughout Q1-Q2 2026, but that the same government would be on the hook if prices collapse post-2026. European trade lawyers note that price-floor commitments to allied producers outside the EU may conflict with WTO subsidy rules if they disadvantage third-country producers. Japanese industrial users, who depend on Lynas LAMP output for separated heavy rare earths, welcomed the Lynas-Japan arrangement but stressed Japan needs terbium and dysprosium floors, not just NdPr.

By the numbers

• $110/kg, DoD's NdPr price floor with MP Materials, guaranteed for 10 years.
• $400m, DoD equity investment in MP Materials (now its largest shareholder).
• $150m, OSCP loan to MP Materials under the DoD partnership.
• $2.5bn, Project Vault's initial size as announced by President Trump (February 3).
• $2bn, actual Congressional appropriation for the Strategic Resilience Reserve (One Big Beautiful Bill, Section 20004).
• 13, number of named critical minerals covered by the DoD supply solicitation.
• $64bn, total G7 Évian commitment across 195 critical mineral projects (June 17).
• 60%, G7 target cap on any single country's share of rare earth processing by 2030.
• 195, named projects covered by the G7 Évian minerals declaration.

Why it matters

Price floors represent a structural shift in how Western governments underwrite supply-chain diversification. Past approaches, grant funding, loan guarantees, content requirements under the IRA, proved insufficient to attract capital when Chinese incumbents could price-suppress below Western production costs. A guaranteed minimum price converts a market risk into a sovereign credit risk, making investment bankable even if spot prices collapse. The DoD-MP Materials deal showed the model works for a US producer; the February 2026 allied negotiations and the G7 Évian commitment suggest it is scaling to a network, covering mine, refining and magnet production across the US, Australia, Japan, EU and Mexico. The 60% single-supplier ceiling on rare earth processing, if enforced, would require China's current 90%+ share of NdPr refining to be materially displaced within four years, a timeline that requires all current Western projects (Lynas, MP Materials, Energy Fuels, Vital Metals) to execute without major delays. Project Vault's $2 billion stockpile provides a buffer against Chinese export-control disruptions of the type already applied to gallium, germanium, antimony and heavy rare earths.

What to watch

• Whether the US floors with Mexico, EU and Japan are formalised into binding contracts with specific price levels, or remain aspirational frameworks.
• The trigger rate for Project Vault purchases: which minerals, at what price thresholds, and whether the reserve is built before the next supply disruption.
• Lynas-Japan offtake terms: volume, price, and whether the arrangement covers dysprosium and terbium (the heavy REEs with 98-99% Chinese supply) or only NdPr.
• G7 Évian project delivery rate: of the 195 named projects and $64bn committed, how many reach financial close and construction by 2028.
• Congressional appropriation of the $2bn reserve: whether funds are released on schedule and whether the administration's target minerals list is disclosed publicly.