Platts to refine Thermal Coal FOB Kalimantan Ash Differential 1%, FOB Kalimantan Sulfur Differential 0.1% assessments

Platts, part of S&P Global Energy, will refine the Thermal Coal FOB Kalimantan Ash Differential 1% (AVTCI00) and the FOB Kalimantan Sulfur Differential 0.1% (AVTCH00) assessments, effective Dec. 7, 2026.

The decision follows market feedback for greater transparency in the pricing of Indonesian thermal coal. Market feedback indicated that coal grades with a heat value of 5,000 kcal/kg GAR or below are considered to fall within the same band for ash and sulfur differential adjustments.

The decision follows a proposal note, published Oct. 16, 2026, here.

As such, Platts will rename its FOB Kalimantan ash and sulfur differentials to apply to coal grades with a heat value of 5,000 kcal/kg GAR or below.

Platts will also rename the assessments in line with the change, as below:

Assessment	Symbol
Thermal Coal FOB Kalimantan Low-to-Mid-CV Ash Differential 1%	AVTCI00
Thermal Coal FOB Kalimantan Low-to-Mid-CV Ash Differential 1% $/mt Qavg	AVTCI05
Thermal Coal FOB Kalimantan Low-to-Mid-CV Ash Differential 1% $/mt Mavg	AVTCI03
Thermal Coal FOB Kalimantan Low-to-Mid-CV Ash Differential 1% $/mt Wavg	AVTCI04
Thermal Coal FOB Kalimantan Low-to-Mid-CV Sulfur Differential 0.1%	AVTCH00
Thermal Coal FOB Kalimantan Low-to-Mid-CV Sulfur Differential 0.1% $/mt Qavg	AVTCH05
Thermal Coal FOB Kalimantan Low-to-Mid-CV Sulfur Differential 0.1% $/mt Mavg	AVTCH03
Thermal Coal FOB Kalimantan Low-to-Mid-CV Sulfur Differential 0.1% $/mt Wavg	AVTCH04

These assessments are published in Platts Coal Trader International and on the fixed page GCI0410.

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