This research paper contains the abstract which is the research work based on Coal, a fossil fuel which is the largest source of energy for the generation of electricity worldwide, as well as one of the largest worldwide anthropogenic sources of carbon dioxide emissions. Gross carbon dioxide emissions from coal usage are slightly more than those from petroleum and about double the amount from natural gas. Coal is extracted from the ground by mining, either underground or in open pits. Coal is the most important and abundant fossil fuel in India. It accounts for 63% of the country’s energy need. India now ranks 3rd among the coal producing countries. Most of the coal production in India cumbersome open pit mines contributing over 80% of the total production. Although coal plays an important role in catering to energy needs, it also causes environmental damage during mining, transportation and processing. Here this research work explains that upto what extent which coal composition is suitable for the use of power industries with respect to the commercial point of view along with gross calorific value and ash content in coal.