Low carbon emissions7/25/2023 The only factor that caused emissions to decrease in 2021 was energy intensity, which decreased CO 2 emissions by 19 MMmt. The impact of population change on emissions between 20 was positive but marginal. In 2021, the largest increases in energy-related CO 2 emissions resulted from GDP per capita (258 MMmt), and the carbon intensity of energy (84 MMmt) (Figure 3). Although record growth in emissions occurred in 2021, total emissions remained lower than peak CO 2 emissions in 2007, as well pre-pandemic emissions in 2019. Most of this increase resulted from activity across all sectors of the economy returning to pre-pandemic levels. energy-related CO 2 emission that occurred in 2020. energy-related CO 2 emissions on record, both in absolute and percentage terms, and followed the historic decline in U.S. This was the largest annual increase in U.S. energy-related CO 2 emissions increased by 7%, or 325 MMmt (Figure 1). energy-related CO 2 emissions followed an increase in economic activity Supplemental analysis, as well as a discussion of the methodology and terminology used in this report, is available in the Appendix and methodology. energy-related CO 2 emissions in this report is based on data published in both the STEO and the Monthly Energy Review (MER). We found that though there are small differences in details arising from scope and estimation method, our estimates are very close to EPA’s at aggregate levels. Environmental Protection Agency (EPA) to examine how our estimates of energy-related U.S. We were directed in the Infrastructure Investment and Jobs Act of 2021 to work with the U.S. We also provide projections of international energy-related CO 2 emissions through 2050 in our International Energy Outlook (IEO). emissions projections in the Annual Energy Outlook (AEO), which provides annual projections of energy-related CO 2 emissions by fuel source, sector, and end use, as well as projections of other elements of energy markets, through 2050. energy-related CO 2 emissions and key drivers in our monthly Short-Term Energy Outlook (STEO), which includes forecasts by fuel source over the next calendar year and our latest estimates on the effects of recent events on energy markets and energy-related CO 2 emissions. You can find a short-term forecast of U.S. energy-related CO 2 emissions are available in many of our products. Short-term forecasts and long-term projections of U.S. Many changes in energy-related CO 2 emissions between 20 were associated with the economic effects of the pandemic. The combination of conditions that raised energy-related CO 2 emissions in the United States in 2021 do not necessarily represent future trends. Industrial sector emissions increased by 4%, or 54 MMmt, due to an increase in industrial activity.Residential sector emissions increased by 4%, or 36 MMmt, mostly from changes in the electricity fuel mix.Commercial sector emissions increased by 7%, or 50 MMmt, resulting from both a change in the electricity fuel mix and an increase in commercial activity.Transportation sector emissions increased by 11%, or 185 MMmt, due to increased travel.energy-related CO 2 emissions increased across all sectors, although in each of these sectors, emissions remained below 2019 levels: These increases in electricity-related CO 2 emissions were tempered by a continued longer-term trend towards non-carbon electricity generation, particularly solar and wind, whose shares of electricity generation continued to increase in 2021.Īs a result of these short- and long-term factors, U.S. This decline was largely offset by coal-fired generation, whose share of electricity generation increased from 20% in 2020 to 23% in 2021. Significant increases in natural gas prices reduced the share of electricity generated by natural gas from 40% in 2020 to 37% in 2021. ![]() motor gasoline increased by 9% and jet fuel increased by 27% as travel demand began to return to pre-pandemic levels.Ĭhanges in the mix of fuels used to generate electricity also affected energy-related CO 2 emissions in the United States. Increases in the consumption of petroleum products, particularly in the transportation sector, accounted for over half of the rise in U.S. energy-related CO 2 emissions increased by 7%, or 325 million metric tons (MMmt), in 2021 compared with 2020 however, total emissions in 2021 remained 5%, or 242 MMmt, below 2019 levels.īoth short-term and long-term factors contributed to the rise in energy-related CO 2 emissions. In 2021, economic activity and energy-related CO 2 emissions began to return to pre-pandemic levels. and world economies, energy markets, and energy-related carbon dioxide (CO 2) emissions. ![]() ![]() In 2020, the COVID-19 pandemic substantially affected the U.S.
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