Calorific values

Gross values used to calculate £/kWh. Updated with the board.

These are the gross calorific values (dry basis) behind the £/kWh column. The figure is pack price ÷ kilograms ÷ kWh/kg. See how we work out the cost per kWh.

• Supertherm Large Briquette, 8.889 kWh/kg gross CV source
• Oxbow Red Medium Briquette, 8.341 kWh/kg gross CV source
• Oxbow Excell Medium Briquette, 8.528 kWh/kg gross CV source
• Homefire Ovals Large Briquette, 8.889 kWh/kg gross CV source
• Homefire Brazier Medium Briquette, 8.750 kWh/kg gross CV source
• Homefire Large Briquette, 8.889 kWh/kg gross CV source

Anthracite grades, when added, use typical published gross values and are labelled as such. We do not invent figures.