Calorific value basis (kcal/kg ncv)6000:5, 500: Calorific value basis 6, 000 kcal/kg ncv 5, 500 kcal/kg ncv 4, 900 kcal/kg ncv Our coal price data is reliable, transparent and objective, as it is derived directly from the trading platform. Shared with the market, this data becomes a powerful tool for price discovery and risk management. We offer a variety of packages to meet your needs: