Indonesia Updates Bauxite Pricing Formula (HPM) Effective 15th April 2026

Published: Apr 13, 2026 17:07

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[SMM Aluminum Express News] The Ministry of Energy and Mineral Resources (ESDM) has updated the Harga Patokan Mineral (HPM) guidelines for bauxite through Kepmen No. 144.K/MB.01/MMEM.B/2026, which amends the previous regulation.

New HPM Formula (in USD/WMT): HPM Biji Bauksit = [(Constant × HMA Aluminium) ± CF Al₂O₃ − CF R-SiO₂] × (1 − MC)
Constant = 1.50%
CF Al₂O₃:
Unchanged (±1.4 USD per 1% from 47%)
CF R-SiO₂:
≤ 2% = No deduction
> 2% = US$3.5 deduction per 0.5% increase (capped)

The changes take effect on 15 April 2026.

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