Emission Trends in Miscellaneous Combustion

Reported emissions from the Miscellaneous Combustion sector* decreased from 89 million metric tons (MMT) CO2e in 2011 to 80 MMT CO2e in 2020, an overall decrease of 10 percent. The decline in reported emissions is due primarily to a shift from burning coal to natural gas. Total reported emissions have varied slightly up and down over the time series, with a maximum of 91 MMT CO2e in 2014 and a minimum of 80 MMT CO2e in 2020. The lower emissions reported in 2020 are likely a result of the COVID-19 pandemic, as it reduced economic activity and caused changes in energy demand and supply across all energy and use sectors [1]. The number of reporters in 2020 was 1,107, which is a slight increase from 2011 (1,085 reporters) and a decrease from 2019 (1,116 reporters). Emissions from all subsectors decreased in 2020. The largest decreases in emissions were in manufacturing (1.5 MMTCO2e or 10 percent), ethanol production (1.8 MMTCO2e or 9 percent), and food processing (0.8 MMTCO2e or 3 percent).

* The sector includes a broad range of miscellaneous industrial and institutional sources, including the following FLIGHT sectors (food processing, ethanol production, universities, manufacturing, military, and other). 

[1]       U.S. Department of Energy, Today in Energy, EIA Expects U.S. Energy-Related Carbon Dioxide Emissions to Fall 11% in 2020, December 9, 2020. Available at: https://www.eia.gov/todayinenergy/detail.php?id=46196

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