Top contributors to greenhouse gas emissions

This is a collection of the results of various studies regarding the top contributors to atmospheric greenhouse gases responsible for climate change.

Global emitters (1988 to 2015)

The following table shows the top 20 industrial greenhouse gas emitters from 1988 to 2015 according to a study conducted in 2017,[1] based on the Carbon Majors Database.

Rank Company Country Percentage
1 China (Coal)  China 14.32%
2 Saudi Arabian Oil Company (Aramco)  Saudi Arabia 4.50%
3 Gazprom OAO  Russia 3.91%
4 National Iranian Oil Co  Iran 2.28%
5 ExxonMobil Corp  United States 1.98%
6 Coal India  India 1.87%
7 Petroleos Mexicanos (Pemex)  Mexico 1.87%
8 Russia (Coal)  Russia 1.86%
9 Royal Dutch Shell PLC  Netherlands, United Kingdom 1.67%
10 China National Petroleum Corp (CNPC)  China 1.56%
11 BP  United Kingdom 1.53%
12 Chevron Corp  United States 1.31%
13 Petroleos de Venezuela SA (PDVSA)  Venezuela 1.23%
14 Abu Dhabi National Oil Co  United Arab Emirates 1.20%
15 Poland (Coal)  Poland 1.16%
16 Peabody Energy Corp  United States 1.15%
17 Sonatrach SPA  Algeria 1.00%
18 Kuwait Petroleum Corp  Kuwait 1.00%
19 Total SA  France 0.95%
20 BHP Billiton Ltd  Australia, United Kingdom 0.91%

Global emitters (1965 to 2017)

The following table shows the top 20 industrial greenhouse gas emitters from 1965 to 2017 according to a study conducted in 2019, based on the Climate Accountability Institute.[2]

Rank Company Country Percentage
1 Saudi Arabian Oil Company (Aramco)  Saudi Arabia 4.38%
2 Chevron Corporation  United States 3.20%
3 Gazprom OAO  Russia 3.19%
4 ExxonMobil  United States 3.09%
5 National Iranian Oil Co  Iran 2.63%
6 BP  United Kingdom 2.51%
7 Royal Dutch Shell  Netherlands, United Kingdom 2.36%
8 Coal India  India 1.71%
9 Petroleos Mexicanos (Pemex)  Mexico 1.67%
10 Petroleos de Venezuela SA (PDVSA)  Venezuela 1.16%
11 China National Petroleum Corp (CNPC)  China 1.15%
12 Peabody Energy  United States 1.14%
13 ConocoPhillips  United States 1.12%
14 Abu Dhabi National Oil Co  United Arab Emirates 1.01%
15 Kuwait Petroleum Corp  Kuwait 1.00%
16 Iraq National Oil Company  Iraq 0.93%
17 Total SA  France 0.91%
18 Sonatrach SPA  Algeria 0.91%
19 BHP Billiton Ltd  Australia, United Kingdom 0.72%
20 Petrobras  Brazil 0.64%

US emitters (2011)

This is a list of the top US companies responsible for carbon dioxide emissions and other greenhouse gases, based on a study conducted by University of Massachusetts Amherst in 2013, based on 2011 data.[3]

Rank Company 2011 CO2 eq. emissions

(in millions of metric tons)

1 American Electric Power 130
2 Duke Energy 127
3 Southern Company 118
4 U.S. Government 77
5 Berkshire Hathaway (through MidAmerican Energy) 71
6 Ameren Corp 68
7 Luminant 62
8 FirstEnergy 53
9 AES Corp 51
10 Xcel Energy 51
11 Dominion Resources 44
12 NRG Energy 44
13 Edison International 41
14 ExxonMobil 39
15 Calpine 38
16 DTE Energy 38
17 LG&E and KU Energy LLC 35
18 Entergy 35
19 BP America 34
20 ConocoPhillips (prior to Phillips 66 spinoff) 31
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See also

References
  1. Riley, Tess (Jul 10, 2017). "Just 100 companies responsible for 71% of global emissions, study says". The Guardian. Retrieved Aug 7, 2018.
  2. Taylor, Matthew; Watts, Jonathan (2019-10-09). "Revealed: the 20 firms behind a third of all carbon emissions". The Guardian. ISSN 0261-3077. Retrieved 2020-05-15.
  3. Helman, Christopher (Jun 10, 2013). "America's 20 Worst Corporate Air Polluters". Forbes. Retrieved Jul 29, 2018.
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