What is coal? - Origin Energy
Most people know coal as a fossil fuel which is used to produce around 40 percent of the world's electricity. 1 It's a flammable black or brown sedimentary rock, and is made mostly of organic carbon. However, there are actually two main types of coal: 'thermal' coal, which is mostly used for power generation, and 'metallurgical' coal, which is mostly used for steel production.May 01, 2020 · Most of U.S. electricity generation is from electric power plants that use a turbine or similar machine to drive electricity generators. A turbine converts the potential and kinetic energy of a moving fluid (liquid or gas) to mechanical energy. In a turbine generator, a moving fluid—such as water, steam, combustion gases, or air—pushes a series of blades mounted on a shaft, which rotates .