Coal as a source of energy. Coal is South Africa's dominant energy source. 77% of South Africa's energy needs are provided by coal, according to the Department of Energy 6. Eskom produces 95% of electricity used in South Africa 7, and its coalfired stations produce about 90% of electricity produced by the utility 8.
Apr 29, 2010· High atmospheric pressure and temperature are some of the other conditions that are required for the formation of coal. The composition of coal depends on the nature of deposit. More than 1200 different varieties of coal are found in different parts of .