A power plant, also known as a power station, is a factory that converts various primary energy sources stored in nature into electrical energy (secondary energy). At the end of the 19th century, as the demand for electricity increased, people began to propose the idea of establishing a power production center. With the development of motor manufacturing technology, the expansion of the application range of electric energy, and the rapid increase in the demand for electricity in production, power plants have emerged accordingly. Power plants have a variety of power generation methods: thermal power plants are called thermal power plants, hydropower plants are called hydropower plants, and some power plants rely on solar energy (photovoltaic) and wind and tidal power. And nuclear power plants that use nuclear fuels as energy sources have played an increasing role in many countries in the world.