The apparent difference between the two plants is slightly reduced by the fact that the gas-turbine installation also requires a reduction gear and a bulky ducting system for fresh air and the exhaust gases.
Umahluko ocacileyo phakathi kweematshini ezimbini uhliswe kancinci ngenxa yokuba ukufakwa kwe-injini yomsinga yamanzi yerhasi ikwafuna igiyeri yokuhlisa kwakunye nemixokelelwano yokuphungula esisambuku ukwenzela umoya omtsha kwakunye neerhasi ezingasafunekiyo.