The Ministry of Energy and Mineral Resources (ESDM) has set the August 2023 benchmark price for coal at US$179.90 per ton.
This figure is down 6.1% compared to the July 2023 benchmark price of US$191.6 per ton.
More specifically, HBA I in August 2023 is set at US$84.75 per ton. HBA II is set at US$57.38 per ton, and the new price for HBA III is set at US$31.96 per ton.
Looking at the price of each class in August 2023, all values are down compared to July 2023, as shown in the graph. Note that in July 2023, HBA III had not yet been established.
Previously, HBA was determined based on the average index of the Indonesia Coal Index (ICI), Newcastle Export Index (NEX), Globalcoal Newcastle Index (GCNC), and Platt's 5900, with quality equated to a calorific value of 6,322 kcal/kg GAR, total moisture of 8%, total sulfur of 0.8%, and ash of 15%.
HBA is now calculated based on the average realized coal selling price from the previous month (70% proportion), and the realized price from two months prior (30% proportion).
HBA is also differentiated into four categories based on coal quality, namely:
* HBA: equivalent calorific value of 6,322 kcal/kg GAR, total moisture of 12.26%, total sulfur of 0.66%, and ash of 7.94%.
* HBA I: equivalent calorific value of 5,300 kcal/kg GAR, total moisture of 21.32%, total sulfur of 0.75%, and ash of 6.04%.
* HBA II: equivalent calorific value of 4,100 kcal/kg GAR, total moisture of 35.73%, total sulfur of 0.23%, and ash of 3.90%.
* HBA III: equivalent calorific value of 3,400 kcal/kg GAR, total moisture of 44.30%, total sulfur of 0.24%, and ash of 3.88%.
The August 2023 HBA is stipulated in the Decree of the Minister of Energy and Mineral Resources of the Republic of Indonesia Number: 245.K/MB.01/MEM.B/2023 concerning the Reference Price for Metal Minerals and the Reference Price for Coal for August 2023.
(See also: [Indonesia's Coal Reference Price for June-July 2023 Shows Slight Increase](https://databoks.katadata.co.id/datapublish/2023/07/20/harga-batu-bara-acuan-indonesia-per-juni-juli-2023-kini-menguat-tipis))