The environmental effects of coal
coal power plants are responsible for 93 percent of the sulfur dioxide and 80 percent of the nitrogen oxide emissions generated by the electric utility industry.
These emissions create the acid rain that is eating away red spruce forests in the Northeast and Appalachia, and rob previously pristine streams of brook trout and other fish species in the Adirondacks, upper Midwest and Rocky Mountains.Coal emissions also cause urban smog, which has been linked to respiratory diseases, and coal-fired power plants also contribute to global climate change.
Coal plants emit 73 percent of the carbon dioxide emitted into the atmosphere from electricity generators. By releasing the energy stored in coal, large quantities of carbon dioxide that have been stored in the coal for millions of years are released back into the atmosphere, increasing the threat of global warming. Coal plants are also a major source of airborne emissions of mercury, a toxic heavy metal.
Federal law requires that air pollution be kept within limits. However, these limits are significantly lower for older coal plants than for newer ones. Even when kept within the air emission limits set by the Clean Air Act, state-of-the-art coal power plants still produce significant damage to human health, public and private property, and ecosystems.The mining, processing, and transporting of coal also impacts the environment. In the West, about 87 percent of coal is removed from the earth through strip mining, which can contaminate soils with heavy metals and destroy near-surface aquifers. In the East, coal is sometimes mined by removing entire mountain tops to more easily extract the subsurface mineral reserves.
Coal combustion also results in huge quantities of solid wastes. Enormous quantities of waste heat require large amounts of water for cooling. The collection of this water from major water bodies threatens local aquatic life, including the killing of fish on the screens designed to keep such organisms out of the power plant.
These emissions create the acid rain that is eating away red spruce forests in the Northeast and Appalachia, and rob previously pristine streams of brook trout and other fish species in the Adirondacks, upper Midwest and Rocky Mountains.Coal emissions also cause urban smog, which has been linked to respiratory diseases, and coal-fired power plants also contribute to global climate change.
Coal plants emit 73 percent of the carbon dioxide emitted into the atmosphere from electricity generators. By releasing the energy stored in coal, large quantities of carbon dioxide that have been stored in the coal for millions of years are released back into the atmosphere, increasing the threat of global warming. Coal plants are also a major source of airborne emissions of mercury, a toxic heavy metal.
Federal law requires that air pollution be kept within limits. However, these limits are significantly lower for older coal plants than for newer ones. Even when kept within the air emission limits set by the Clean Air Act, state-of-the-art coal power plants still produce significant damage to human health, public and private property, and ecosystems.The mining, processing, and transporting of coal also impacts the environment. In the West, about 87 percent of coal is removed from the earth through strip mining, which can contaminate soils with heavy metals and destroy near-surface aquifers. In the East, coal is sometimes mined by removing entire mountain tops to more easily extract the subsurface mineral reserves.
Coal combustion also results in huge quantities of solid wastes. Enormous quantities of waste heat require large amounts of water for cooling. The collection of this water from major water bodies threatens local aquatic life, including the killing of fish on the screens designed to keep such organisms out of the power plant.