Plans to build a rare earths refinery at Saltend Chemicals Park near Hull have been dropped as Pensana pivots to seek U.S. investment for downstream processing, underscoring how policy and price signals now dictate where critical-minerals capacity gets built. The UK-backed project had planning consent and was expected to create 126 skilled jobs, but the company is redirecting resources to finance production from its Longonjo mine in Angola and evaluate a U.S. location for refining. The Saltend facility’s capital cost had risen to about $250 million from an earlier $195 million estimate, while the United Kingdom’s offer was a conditional grant of up to £4 million through the Automotive Transformation Fund — insufficient against today’s market dynamics, according to company updates. UK government documentation and Pensana’s own disclosures detail the original scope and support levels.
U.S. incentives have changed the rare earths equation
Pensana’s strategic rethink comes after a wave of American intervention to localize the rare earth magnet supply chain. In July 2025, MP Materials announced a public–private partnership with the U.S. Department of Defense that includes a $400 million preferred equity investment, a $150 million loan to expand heavy rare earth separation in California, a 10‑year NdPr price floor set at $110/kg, and a decade-long commitment to purchase all magnets produced at a new U.S. “10X” facility slated to start commissioning in 2028. The package recalibrates project economics for non‑Chinese refining and magnet making. The agreements were disclosed by the company and covered by business media. See MP’s announcement and coverage from MP Materials and CNBC.
The U.S. push sits within a broader effort by advanced economies to diversify away from Chinese processing, which still accounts for the vast majority of refined rare earths. G7 finance ministers reiterated coordination on supply-chain resilience for critical minerals during meetings in Washington this week, citing China’s dominant role and new export restrictions. According to Reuters, the group is aligning procurement and investment tools to accelerate alternative capacity.
What Saltend would have done — and why Pensana is pausing it
The Saltend project was designed to convert mixed rare earth carbonate (MREC) into separated oxides, including neodymium and praseodymium (NdPr) — the core ingredients in high‑strength permanent magnets used in electric vehicle motors, industrial robots, and offshore wind turbines. Pensana’s engineering studies envisaged an output of roughly 12,500 tonnes per year of rare earth oxides, including 4,500–5,000 tonnes of NdPr, before inflation and design changes lifted the capex. While the UK’s 2022 Critical Minerals Strategy recognized Saltend’s strategic value, official documents indicate the support on offer was limited to an ATF grant of up to £4 million and initial facilitation — far short of the blended equity, loans, price floors, and multi‑year offtakes now emerging in the United States. Company updates and UK government releases provide the key figures and milestones: Pensana and GOV.UK.
Feedstock is financed: Longonjo moves toward first shipments
Upstream, Pensana has secured approvals for approximately $268 million to develop Phase 1 of Longonjo in Angola, with a $160 million debt facility led by Africa Finance Corporation and Absa, plus equity and convertibles from Angola’s sovereign wealth fund and AFC. The funding allows main construction to proceed. The company guides to initial output of around 20,000 tonnes per year of “ultra‑clean” MREC from 2026, with a potential expansion to 40,000 t/y later in the decade. These details are outlined in Pensana’s March 18, 2025 finance update and subsequent operational announcements. See Pensana and industry coverage via Morningstar.
To underpin demand, Pensana has signed non‑binding offtake memoranda with Toyota Tsusho for up to 20,000 t/y of MREC over five years and, separately, with ReElement Technologies — a U.S. refiner — to build a mine‑to‑oxide pathway that leverages chromatographic separation and the Lobito Corridor for export. The Toyota Tsusho and ReElement agreements are described in company releases and market reports. See Pensana’s announcements via Cision and Nasdaq.
Why the technology and timing matter
NdPr magnets are prized for high energy density and temperature stability, enabling compact, efficient motors in EVs and direct‑drive wind turbines. Yet magnets require a mid‑stream chain — separation, refining, and alloying — that has historically been concentrated in China. When prices for rare earth oxides fell in 2024–2025 amid softer demand and ample Chinese supply, Western projects without price floors or long‑term offtakes struggled to reach final investment decisions. Recent U.S. policies — notably long‑tenor procurement, equity stakes, and floor prices — aim to reduce that cyclicality risk, helping private capital underwrite new refineries and magnet plants. CNBC’s summary of the MP Materials package and Reuters Technology reporting on supply‑chain de‑risking frame the shift in financing models.
Implications for the UK and Europe
For Britain, Pensana’s pause removes a near‑term route to domestically separated rare earth oxides, even as policymakers seek to reduce import dependence. The government’s 2022 strategy remains in force and ministers have signaled a refreshed plan is coming, but for now much of the incremental refining and magnet capacity is being pulled toward the U.S. by larger, clearer incentive stacks. Europe faces a similar gap: without multi‑year offtakes and price‑stabilization mechanisms, projects must absorb commodity volatility on their balance sheets, a hurdle that U.S. competitors are increasingly able to mitigate.
What’s next for Pensana
Pensana says its priority is delivering Longonjo on time and budget while advancing downstream partnerships. The company is also evaluating a dual listing in the United States and is preparing a share consolidation to meet potential listing thresholds, per a September 30, 2025 notice to investors. See Pensana’s AGM notice. Separate from rare earths, Executive Chair Paul Atherley is involved in Tees Valley Lithium through Alkemy Capital; that UK refinery continues front‑end engineering ahead of a final investment decision, according to company filings and market updates.
The bottom line: without scale financing and long‑dated offtake guarantees, high‑capex rare earth refineries will gravitate to jurisdictions that offer them. For manufacturers betting their electrification roadmaps on permanent‑magnet motors, what matters most is how quickly diversified refining and magnet capacity comes online — and under what market rules it operates.
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