Greenhouse gas emissions by the United States/ja: Difference between revisions

{{About|gases from the United States which contribute to climate change, and their mitigation|all the other aspects of climate change in this country|Climate change in the United States}}

[[File:Atlanta 75.85.jpg|thumb|upright=1.35|[[Transportation in the United States|Transportation]] is the largest source of greenhouse gas emissions in the U.S.|301x301px]]

<noinclude>{{multiple image | total-width=675

| image1=1990- Annual greenhouse gas emissions - U.S. - line chart.svg |caption1=Though the U.S.'s ''per capita'' and per [[Gross domestic product|GDP]] emissions have declined significantly, the raw numerical decline in emissions is much less substantial.

| image2=20210703 Variwide chart of greenhouse gas emissions per capita by country (includes OTHER).svg |caption2= The U.S. has among the highest [[List of countries by carbon dioxide emissions per capita|per person emissions]], of the countries that emit the most greenhouse gases.

| image4=1980- Natural gas production, by country.svg | caption4=The U.S. has been the predominant producer of natural gas, which includes the greenhouse gas methane.

| image1= 20250319 US greenhouse gas emissions by sector.svg |caption1= Greenhouse gas emissions in the U.S., arranged by economic sector

| image2= CO2 emission pie chart.svg |caption2= Annual US CO2 emissions are about a third that of China, which has about four times the population.

The [[United States]] produced 5.2 billion [[metric tons]] of [[carbon dioxide equivalent]] [[greenhouse gas emissions|greenhouse gas (GHG) emissions]] in 2020, the second largest in the world after [[greenhouse gas emissions by China]] and among the [[List of countries by greenhouse gas emissions per capita|countries with the highest greenhouse gas emissions per person]]. In 2019 China is estimated to have emitted 27% of world [[Greenhouse gas|GHG]], followed by the United States with 11%, then India with 6.6%. In total the United States has emitted a quarter of world GHG, more than any other country. Annual emissions are over 15 tons per person and, amongst the top eight emitters, is the highest [[List of countries by greenhouse gas emissions per capita|country by greenhouse gas emissions per person]].

The [[International Energy Agency|IEA]] estimates that the richest decile in the US emits over 55 tonnes of {{CO2}} per capita each year. Because [[Coal power in the United States#Trends, comparisons, and forecasts|coal-fired power stations are gradually shutting down]], in the 2010s emissions from [[Electricity sector of the United States#Electricity generation|electricity generation]] fell to second place behind [[Transportation in the United States|transportation]] which is now the largest single source. In 2020, 27% of the GHG emissions of the United States were from transportation, 25% from electricity, 24% from industry, 13% from commercial and residential buildings and 11% from agriculture.

U.S. energy-related CO2 emissions decreased by 3% in 2023, amounting to a reduction of approximately 134 million metric tons (MMmt). This reduction primarily occurred in the electric power sector, with a significant shift from coal-fired power to more sustainable energy sources like solar and natural gas.

In 2021, the electric power sector was the second largest source of U.S. greenhouse gas emissions, accounting for 25% of the U.S. total. These greenhouse gas emissions are contributing to [[climate change in the United States]], as well as [[Climate change|worldwide]].