1. They are used as central station for small or medium power supplies. They can be used as stand-by plants to hydro-electric power plants and steam power plants for emergency services. They can be used as peak load plants in combinations with thermal or hydro-plants. They are quite suitable for mobile power generation and are widely used in transportation systems such as automobiles, railways, air planes and ships. Now-a-days power cut has become a regular feature for industries. The only solution to tide over this difficulty is to install diesel generating sets. APPLICATIONS OF DIESEL POWER PLANT