The installation of state of the art air pollution controls at existing U.S. coal-fired power plants has increased significantly over the past three decades. As of 2021, 82.5 percent of the existing U.S. coal fleet were retrofitted with flue gas desulfurization (FGD) controls. Also known as scrubbers, these technologies are used by power plants to reduce emissions of air pollutants such as nitrogen oxides (NOx) and Sulfur dioxide (SO₂). Meanwhile, 57.1 percent of coal plants had been retrofitted with selective catalytic reduction (SCR). Such technologies have helped significantly reduce NOx and SO₂ emissions from electric utilities. Nevertheless, there are still numerous operational coal power plants that remain uncontrolled.
Share of existing coal fleet with pollution controls in the United States from 1995 to 2021, by type
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Environmental Protection Agency. (May 19, 2023). Share of existing coal fleet with pollution controls in the United States from 1995 to 2021, by type [Graph]. In Statista. Retrieved August 24, 2024, from https://www.statista.com/statistics/1394850/coal-fleet-with-air-pollution-controls-united-states/
Environmental Protection Agency. "Share of existing coal fleet with pollution controls in the United States from 1995 to 2021, by type." Chart. May 19, 2023. Statista. Accessed August 24, 2024. https://www.statista.com/statistics/1394850/coal-fleet-with-air-pollution-controls-united-states/
Environmental Protection Agency. (2023). Share of existing coal fleet with pollution controls in the United States from 1995 to 2021, by type. Statista. Statista Inc.. Accessed: August 24, 2024. https://www.statista.com/statistics/1394850/coal-fleet-with-air-pollution-controls-united-states/
Environmental Protection Agency. "Share of Existing Coal Fleet with Pollution Controls in The United States from 1995 to 2021, by Type." Statista, Statista Inc., 19 May 2023, https://www.statista.com/statistics/1394850/coal-fleet-with-air-pollution-controls-united-states/
Environmental Protection Agency, Share of existing coal fleet with pollution controls in the United States from 1995 to 2021, by type Statista, https://www.statista.com/statistics/1394850/coal-fleet-with-air-pollution-controls-united-states/ (last visited August 24, 2024)
Share of existing coal fleet with pollution controls in the United States from 1995 to 2021, by type [Graph], Environmental Protection Agency, May 19, 2023. [Online]. Available: https://www.statista.com/statistics/1394850/coal-fleet-with-air-pollution-controls-united-states/