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Clean Air Markets

Power Plant Emission Trends

EPA collects detailed sulfur dioxide (SO2), nitrogen oxides (NOX), and carbon dioxide (CO2) emission data and other information from power plants across the country as part of:

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Download charts and a summary of EPA's 2018 emissions data.(36 K) Get the free Excel reader.

Sulfur Dioxide

Sulfur Dioxide Emissions, 1990-2018

Sulfur dioxide emissions have fallen from 15.73 million tons in 1990 to 1.26 million tons in 2018. Electricity use has risen from 19.68 billion mmBtu in 1990 to 23.41 billion mmBtu in 2018.Sulfur dioxide emissions have fallen from 15.73 million tons in 1990 to 1.26 million tons in 2018. Electricity use has risen from 19.68 billion mmBtu in 1990 to 23.41 billion mmBtu in 2018.

Sulfur Dioxide Emissions Changes, 1990-2018

The Eastern US experienced the largest decreases in sulfur dioxide emissions.The Eastern US experienced the largest decreases in sulfur dioxide emissions.
Download data behind the map in this Excel file: National Sulfur Dioxide Emission Change Data, 1990-2018(246 K) . Get the free Excel reader.

Annual Nitrogen Oxides

Annual Nitrogen Oxides Emissions, 1990-2018

Annual nitrogen oxides emissions have decreased from 6.40 in 1990 to 1.02 in 2018. Electricity use, measured in heat input, has increased from 19.68 mmBtu to 23.41 mmBtu.Annual nitrogen oxides emissions have decreased from 6.40 in 1990 to 1.02 in 2018. Electricity use, measured in heat input, has increased form 19.68 mmBtu to 23.41 mmBtu.

Annual Nitrogen Oxides Emissions Changes,1995-2018

The Eastern US experienced the largest decreases in annual nitrogen oxides emissions.The Eastern US experienced the largest decreases in annual nitrogen oxides emissions.
Download data behind the map in this Excel file: Annual Nitrogen Oxides Emission Changes, 1995-2018(241 K)Get the free Excel reader.

Ozone Season Nitrogen Oxides

Ozone Season Nitrogen Oxides Emissions, 1997-2018

Ozone season nitrogen oxides emissions have decreased from 2.57 million tons in 1997 to 0.44 million tons in 2018. Electricity use, measured in heat input, has increased from 10.59 mmBtu in 1997 to 11.04 mmBtu in 2018.Ozone season nitrogen oxides emissions have decreased from 2.57 million tons in 1997 to 0.44 million tons in 2018. Electricity use, measured in heat input, has increased from 10.59 mmBtu in 1997 to 11.04 mmBtu in 2018.

Ozone Season Nitrogen Oxides Emissions Changes, 1997-2018

The Eastern US experienced the largest decreases in ozone season nitrogen oxides emissions.The Eastern US experienced the largest decreases in ozone season nitrogen oxides emissions.
Download data behind the map in this Excel file: Ozone Season Nitrogen Oxides Emission Changes Data, 1997-2018(244 K) . Get the free Excel reader.

Carbon Dioxide

Carbon Dioxide Emissions, 1995-2018

Carbon dioxide emissions have fallen from 2.16 million tons in 1995 to 1.93 million tons in 2018. Electricity use, measured in heat input, has increased from 21.76 mmBtu to 23.41 mmBtu.Carbon dioxide emissions have fallen from 2.16 million tons in 1995 to 1.93 million tons in 2018. Electricity use, measured in heat input, has increased from 21.76 mmBtu to 23.41 mmBtu.

Carbon Dioxide Emissions Changes, 1995-2018

The Eastern US experienced the largest decreases in carbon dioxide emissions.The Eastern US experienced the largest decreases in carbon dioxide emissions.
Download data behind the map in this Excel file: National Carbon Dioxide Emission Change Data, 1995-2018(240 K) . Get the free Excel reader.