It discusses load forecasting, economic load dispatch, unit commitment problem, methods of scheduling stations, allocation control, system reliability and system security. Trends in power plant instrumentation and control are also presented. The important problems of pollution control and performance standards of thermal power stations are discussed. The application of computers in power systems is touched. The book also explains the need of using unconventional sources of energy and plants, like biogas plants, biomass plants, solar electric system and wind electric system to save fossil fuels. Rural energy demands and methods of forecasting energy demands are elaborated.