Anxiety concerning the problems of energy and resources has led to a rapid increase in the interest in describing and understanding the conversion processes of energy and other resources in society. To be able to understand the procedure of these conversion processes, it is important that useful concepts, such as the chemical availability, are available. Exergy was introduced in Turkey long ago but not enough attention has been given to it until recently. The objective of this article is to present a calculation of the chemical availability of coal-based fuels in geographical regions of Turkey. In this regard, it has based the necessity of this study on solid and valid arguments on the advantages of second-law analyses compared to first-law analyses and has presented a correct chemical availability calculation.