PT Bukit Asam Seeks Partners for 1.25 GW Coal Plant to Support Inalum's Aluminum Smelter Project

Published: Apr 2, 2026 09:52

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[SMM Aluminum Express News] PT Bukit Asam (PTBA) is seeking partners to build a 1.25 GW coal-fired power plant in Mempawah to support Inalum’s 600,000 tpy aluminum smelter. The project, backed by an MoU between PTBA and Inalum, will require ~5.5 million tons of coal annually (180–200 million tons over 30 years). PTBA targets FID by end-2026, with potential project start in 2027. The smelter itself is part of a larger integrated bauxite–alumina–aluminum chain, with US$2.4 billion investment for the smelter and US$890 million for SGAR Phase 2. It will process 3 Mt bauxite into 1 Mt alumina, then into 600 kt aluminum, supplied by Antam mines. Overall, this strengthens Indonesia’s downstream strategy, boosting domestic alumina capacity to 2 Mt/year and bauxite absorption to 6 Mt/year.

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