Energy is the ability to do work, and power plants are facilities that convert different forms of energy into electrical energy. The book covers the different types of power plants, including thermal, nuclear, hydroelectric, wind, and solar power plants.The book also explains the operating principles of power plants, which involve converting energy into mechanical energy, which is then converted into electrical energy. The major components of a power plant are explained in detail, including boilers or reactors, turbines, generators, transformers, and cooling systems.In addition to these topics, the book covers the various aspects of power plant engineering, including plant layout and design, instrumentation and control, maintenance and troubleshooting, and environmental issues.