The U.S. government regulates coal emissions through the Clean Air Act, setting limits on harmful pollutants from coal-fired power plants.

The Clean Air Act is the primary U.S. law regulating air emissions, including those from coal-burning power plants. Under this act, the Environmental Protection Agency (EPA) sets limits on pollutants such as sulfur dioxide, nitrogen oxides, and carbon dioxide, which are major contributors to air pollution and climate change. The act aims to improve air quality and public health by reducing the environmental impact of coal emissions. It also encourages the adoption of cleaner technologies in the energy sector, helping the U.S. transition towards a more sustainable energy future while addressing environmental and climate concerns.