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Permen ESDM 18/2025 closes a long-standing regulatory gap: until late 2025, Indonesia's REE deposits — found largely as by-products of tin mining (monazite, xenotime in Bangka-Belitung), bauxite, copper, and zircon processing — fell outside the dedicated mineral-specific framework that governs nickel, copper, and bauxite. The instrument operationalises the parent regulation, PP 39/2025 (Second Amendment to PP 96/2021), which Prabowo signed on 11 September 2025 and which inserted Article 18A explicitly empowering the Minister of ESDM to issue rare-earth implementing rules.
Key provisions documented in primary and secondary sources:
BUMN (state-owned enterprises) as the executor of rare-earth mining and utilisation operations. This routes the principal commercial pathway through state enterprises (PT Timah for tin-tailings monazite; MIND ID / PT Antam for primary REE deposits) rather than open WIUP auctions to private capital.
to "prioritise the development of domestic priority industries" (pengembangan industri prioritas dalam negeri) — explicitly listed as defence, electric-vehicle batteries, advanced technology, and permanent magnets. The regulation does not impose a hard export ban (unlike the 2020 nickel-ore and 2023 bauxite-ore Permendag instruments), but the domestic-first allocation requirement is the same hilirisasi mechanism expressed at the ministerial level.
designated after the geological agency (Badan Geologi) completes inventarisation surveys. This installs a state gate-keeping step upstream of any commercial allocation.
for areas ≤ 40 hectares, or Rp 1.5 million per hectare for larger blocks. Modest by international standards but installs a formal performance obligation on any holder.
The regulation sits within a broader 2025 institutional reordering: in August 2025, Indonesia announced a new Mineral Industry Agency (Badan Mineral) tasked with strategic-minerals oversight, with Higher Education Minister Brian Yuliarto sworn in as agency head at the State Palace. Permen ESDM 18/2025 references the existing Directorate-General of Minerals and Coal architecture; the relationship between the new Badan Mineral and the ESDM ministerial framework is still being clarified by implementing KMESDM (ministerial decisions) issued in late 2025.
Severity 4 (qual). Indonesia is positioned as the most credible non-China ASEAN REE-processing alternative: it hosts the world's largest tin-tailings monazite stream (Bangka-Belitung), is estimated to sit on 7-9 Mt of REE oxide-equivalent reserves, and the Prabowo administration has explicitly framed REE-downstreaming as a 2025-2029 strategic priority. The regulation is the first binding ministerial-level instrument to (a) entrench BUMN priority allocation, (b) tie REE output to domestic defence/EV/advanced- technology industries, and (c) install a state gate-keeper (Badan Geologi) upstream of commercial allocation. Not severity 5 because the instrument does not (yet) impose an explicit raw-REE export ban analogous to the 2020 nickel-ore or 2023 bauxite-ore mechanisms — the squeeze on raw exports runs through the BUMN-priority and domestic-industry-priority channels rather than through a numerical ban.
is the most plausible near-term alternative source of monazite-derived light and medium REE concentrates outside China and Australia. By routing allocation through BUMN and domestic-priority industries, Permen ESDM 18/2025 narrows the channel through which Western FEOC-clean consumers (US IRA §45X, EU CRMA benchmarks) could secure Indonesian-origin REE feedstock.
(2020), bauxite (2023), copper concentrate (2024), the REE addition confirms that Indonesia's playbook is being applied commodity-by-commodity. Tin and cobalt are the next watch-items.
monazite economics shift materially when the byproduct gets a domestic-priority mandate — PT Timah's REE-processing capacity (the Muntok facility and joint-venture work with MOLi Group) becomes a more strategic asset.
China's MOFCOM April 2025 heavy-REE licensing regime and the October 2025 extraterritorial / 50%-rule expansion (the latter suspended for one year in November 2025) both raised the strategic premium on alternative REE supply. Permen ESDM 18/2025 is the Indonesian-side complement: not a Western-aligned alternative, but a third-bloc instrument that captures REE rents for Indonesian state industry rather than channeling them westward.
foreign joint ventures (the nickel template at Morowali / Weda Bay has been overwhelmingly Chinese-financed), but it formalises the political premium on locally-aligned partnerships. Western REE processors (Lynas, MP Materials) are unlikely to find easy entry; Chinese-aligned capital probably finds the path of least resistance, mirroring the nickel pattern.
Industry Agency creation and the November 2025 Permen ESDM 18 sit in different institutional layers. Subsequent KMESDM (ministerial decisions) in 2026 will clarify whether Badan Mineral takes over REE allocation from Ditjen Minerba or operates in parallel.
export bans by HS code; the implicit squeeze runs through BUMN-priority and domestic-industry-priority allocation. A subsequent Permendag instrument (analogous to Permendag 7/2017 for nickel or Permendag 10/2024 for copper) could formalise a hard ban — watch for one in 2026.
August 2025 Mineral Industry Agency announcement framed it as a defence-aligned institution (Defence Minister role on advisory board). Primary-source confirmation of that institutional architecture is pending — the AsiaToday and ANTARA reads do not align on the precise defence-ministry linkage. Permen ESDM 18/2025 itself is anchored in the ESDM ministerial chain, not the defence ministry.
permits BUMN to be the executor; it does not bar BUMN-foreign joint ventures. The de-facto FDI architecture (Chinese-aligned vs Western- aligned) will be revealed by the first wave of REE WIUP allocations in 2026.
of recoverable monazite-bearing tailings; how the regulation interacts with PT Timah's existing tin-WIUP, RKAB, and downstream-processing framework is the most important commercial question. Implementing decisions are expected in H1 2026.