This document discusses thermal power energy and thermal power plants. It begins with an introduction to energy and power, noting that power is generated from nonrenewable sources like coal, oil, and gas. It then discusses the different kinds of thermal power energy, including fossil fuels like coal, oil, and natural gas. The document explains how a thermal power plant works, including the principle of converting chemical energy to thermal energy and then to physical and electrical energy. It describes the main equipment used in thermal power plants like the boiler, turbine, generator, and cooling systems. Finally, it includes some images of thermal power plants.