10. Canada
> CO2 emissions, metric tons per capita, 2020: 13.77
> CO2 emissions, metric tons per capita, 2010: 15.47 — #11 highest of 147 countries
> CO2 emissions per GDP, 2020: 0.32 — #27 highest of 148 countries
> Total GHG emissions, million metric tons, 2020: 587.20 — #9 highest of 87 countries
Canada, with about 38 million people, had the ninth-highest total greenhouse-gas emissions on the list in 2020. The nation has vowed to cut CO2 emissions by 30% below 2005 levels by 2030 and be at zero by 2050.
9. Oman
> CO2 emissions, metric tons per capita, 2019: 13.87
> CO2 emissions, metric tons per capita, 2010: 13.96 — #14 highest of 147 countries
> CO2 emissions per GDP, 2019: 0.48 — #9 highest of 148 countries
> Total GHG emissions, million metric tons, 2019: 92.34 — #41 highest of 87 countries
The Sultanate of Oman, on the southeastern coast of the Arabian Peninsula, relies on natural gas and oil that it produces and it is a major exporter of those fossil fuels. The country of 5.1 million people has embarked on a solar-power initiative for private use.
8. Saudi Arabia
> CO2 emissions, metric tons per capita, 2019: 14.45
> CO2 emissions, metric tons per capita, 2010: 15.25 — #12 highest of 147 countries
> CO2 emissions per GDP, 2019: 0.31 — #31 highest of 148 countries
> Total GHG emissions, million metric tons, 2019: 581.96 — #10 highest of 87 countries
Saudi Arabia is synonymous with oil production and is one of the leaders of OPEC, the Organization of the Petroleum Exporting Countries. Total CO2 emissions in the kingdom of almost 35 million people have been trending downward since 2015. Still, it had the 10th-highest total greenhouse-gas emissions of any country in 2019. Saudi Arabia has been implementing more energy-efficient processes and now requires new construction to have insulation.
7. Australia
> CO2 emissions, metric tons per capita, 2020: 14.63
> CO2 emissions, metric tons per capita, 2010: 17.40 — #8 highest of 147 countries
> CO2 emissions per GDP, 2020: 0.32 — #27 highest of 148 countries
> Total GHG emissions, million metric tons, 2020: 424.40 — #15 highest of 87 countries
Total CO2 emissions have been trending downward in Australia, beginning in 2009. The government is working to integrate renewables into the energy mix for the nation of 25.7 million people.
6. Brunei Darussalam
> CO2 emissions, metric tons per capita, 2019: 15.22
> CO2 emissions, metric tons per capita, 2010: 17.64 — #7 highest of 147 countries
> CO2 emissions per GDP, 2019: 0.25 — #42 highest of 148 countries
> Total GHG emissions, million metric tons, 2019: 8.43 — #10 lowest of 87 countries
The small nation on the island of Borneo in Southeast Asia, with fewer than 500,000 people, adopted a plan in 2014 to reach 10% of its energy needs through renewables by 2035. It had the seventh-highest total of CO2 emissions, metric tons per capita, in 2010.
