The simplest way of explaining this is as follows: to generate power using a coal plant, you need to buy coal.
Dhismuhu waxa uu fududaa marka loo eego: Si loo abuuro dhisme leh gacmaheenna, waxaad u baahan doontaa inaad soo iibsato qalab dhismo ah oo si dhab ah u raaco talooyinka naga siiya.