Basic Layout and Working of a Thermal Power Plant Thus, a thermal power station may sometimes called as a Steam Power Station. After the steam passes through the steam turbine, it is condensed in a condenser and again fed back into the boiler to become steam. This is known as ranking cycle. This article explains how electricity is generated in thermal power plants. Thermal power plant - SlideShare Sep 24, 2011Thermal Power Plants contribute maximum to the generation of Power for any country . Thermal Power Plants constitute 75% of the total installed captive and non-captive power generation in India . In thermal generating stations coal, oil, natural gas etc. are employed as primary sources of energy . 4. GENERAL LAYOUT OF THERMAL POWER STATION 5.