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PT Brantara Gatra Energi
ID
A lump of coal held over the stockpile

Our coal

Our coal ranges from GAR 3,400 to GAR 5,800 kcal/kg, serving a wide range of industrial and energy needs. We supply consistent, high-quality coal for power generation and other applications, tested to ISO/ASTM standards and in line with environmental regulations.

Where each grade sits

Gross calorific value, kcal/kg (GAR)
  • BGE34: GAR 3,400 kcal/kg, NAR 3,000 kcal/kg
  • BGE42: GAR 4,200 kcal/kg, NAR 3,800 kcal/kg
  • BGE58: GAR 5,800 kcal/kg, NAR 5,500 kcal/kg

BGE34

Low-calorie, high-moisture coal with very low sulphur.

GAR
3,400
NAR
3,000

kcal/kg

Typical specification
BGE34 Typical specification
Total moisture ARB 45%
Inherent moisture ADB 14% approx.
Ash content ADB 6%
Volatile matter ADB 40% approx.
Fixed carbon ADB By difference
Total sulphur ADB 0.4%
Gross calorific value GAR 3,400 kcal/kg
Net calorific value NAR 3,000 kcal/kg
Ash fusion temperature Min. 1,150 °C
Size 0–50 mm 90% approx.
Hardgrove grindability index HGI Min. 45

BGE42

Mid-calorie coal with low sulphur.

GAR
4,200
NAR
3,800

kcal/kg

Typical specification
BGE42 Typical specification
Total moisture ARB 32%
Inherent moisture ADB 14% approx.
Ash content ADB 8%
Volatile matter ADB 41% approx.
Fixed carbon ADB By difference
Total sulphur ADB 0.6%
Gross calorific value GAR 4,200 kcal/kg
Net calorific value NAR 3,800 kcal/kg
Ash fusion temperature Min. 1,150 °C
Size 0–50 mm 90% approx.
Hardgrove grindability index HGI Min. 45

BGE58

High-calorie coal with moderate moisture for efficient firing.

GAR
5,800
NAR
5,500

kcal/kg

Typical specification
BGE58 Typical specification
Total moisture ARB 15%
Inherent moisture ADB 10% approx.
Ash content ADB 15%
Volatile matter ADB 40% approx.
Fixed carbon ADB By difference
Total sulphur ADB 0.8%
Gross calorific value GAR 5,800 kcal/kg
Net calorific value NAR 5,500 kcal/kg
Ash fusion temperature Min. 1,150 °C
Size 0–50 mm 90% approx.
Hardgrove grindability index HGI Min. 45

Consistent quality from stockpile to vessel.

Reading the bases

ARB
As received: the coal as delivered, including all moisture.
ADB
Air-dried: after surface moisture has evaporated in the laboratory.
GAR
Gross as received: total heat released, including heat recovered from water vapour.
NAR
Net as received: usable heat after the energy lost to water vapour.

How each parameter is tested

Values are reported on the basis shown and measured with internationally recognised ISO and ASTM methods.

Parameter ISO ASTM
Total moisture ISO 589 ASTM D3302
Inherent moisture ISO 11722 ASTM D3173
Ash content ISO 1171 ASTM D3174
Volatile matter ISO 562 ASTM D3175
Fixed carbon ISO 17246 ASTM D3172
Total sulphur ISO 19579 ASTM D4239
Gross calorific value (GAR/NAR) ISO 1928 ASTM D5865
Ash fusion temperature ISO 540 ASTM D1857
Size 0–50 mm ISO 1953 ASTM D4749
Hardgrove grindability index ISO 5074 ASTM D409

All figures are typical values. The guaranteed specification, volume and delivery terms are set in each sales contract.

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Moving forward, together.

Tell us what you need: specification, volume and delivery window. We will come back to you within one working day.

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