The key of sustainable electricity production is directly related to coal. In order to satisfy sustainability, coal presence and undiscovered coal potential have to be studied carefully. The aim of this study is to examine potential coalfields in Turkey by using geostatistical tools such estimation and simulation. For this purpose, kriged and simulated maps for lower calorific value are produced using the coal data collected in the Tertiary fields of Turkey. Then locations for which the kriged values do not fall in symmetric 95% probability intervals of simulated values are determined and these locations are considered as highly uncertain and target areas for potential coal resources. This study experimentally shows that geostatistical tools such as kriging and simulations have a great potential to predict and analyze coal resources.