The largest portion of U.S. coal is used for electricity generation.

In the United States, the primary use of coal is for electricity generation, where it serves as a key fuel source for power plants. Coal-fired power plants convert the heat from burning coal into electricity, providing a significant portion of the nation's energy supply. Despite a gradual shift toward natural gas and renewable energy, coal remains important for electricity, especially in regions with limited access to alternative sources. Its reliability and established infrastructure have made coal a dependable energy source historically, although its role in electricity generation has been decreasing as cleaner energy options become more available and economically viable.