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CO2 emissions have emerged as one of the biggest environmental issues the world is facing today. Every year, several billion tonnes of CO2 are produced through the use of fossil fuels. This leads to global warming, climate change, and rising sea levels.
The volume of greenhouse gas emissions worldwide amounted to 53.2 Gt of CO2e in 2024, which represents a 1.3% rise compared to the previous year. Moreover, even though there are many initiatives adopted globally, CO2 emissions continue to rise in some parts of the world. Some of the countries that produce the largest amounts of emissions together make up more than 61% of the total greenhouse gases produced globally each year.
List of the top 7 Countries by Carbon Emission in 2026
Here is the list of the top 7 countries with the highest carbon emissions in the world. According to data based on the latest 2024 data from Emissions Database for Global Atmospheric Research (EDGAR):
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| Rank | Country | CO2 Emission (Gigaton) | Share of Global Emissions | Change from 2023 | Primary Cause |
| 1. | China | 12.6 GT | 32% | +0.8% | Coal-powered industry & Electricity |
| 2. | United States | 4.5 GT | 11.6% | +0.4% | Transport, Energy, & Fossil Fuels |
| 3. | India | 3.0 GT | 7.8% | +3.9% | Rapid industrial ^ energy growth |
| 4. | Russia | 2.0 GT | 5.2% | +2.4% | Oil, gas production & heating |
| 5. | Brazil | 1.2 GT | 3.1% | +0.2% | Deforestation & Agriculture |
| 6. | Indonesia | 1.1 GT | 2.8% | +5.0% | Coal energy & land use change |
| 7. | Japan | 1.0 GT | 2.6% | 2.8% | Manufacturing & Fossil fuel energy |
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1. China
China is the country that emits the most carbon dioxide in the world; it produces almost one-third of global carbon dioxide emissions. This is due to the heavy dependence of China on coal-generated power, as well as its expanding industry. Though it is also the world leader in investments in solar and wind power, its emissions keep on increasing.
2. United States
The United States ranks second on the list of emitters due to reliance on coal-based power generation and industrialization. The previous US president, Donald Trump, had signed the Inflation Reduction Act, which promised to halve emissions by 2030 and reach net-zero emission levels by 2050. But the new political changes in the country have hindered efforts to fight climate change.
3. India
India is the world’s third-largest carbon-emitting country. Moreover, India saw the largest rise in terms of emission levels in 2024. This has been due to the rapidly growing Indian economy, its large population base, and a dependence on coal in its energy sector. On the other hand, India is quickly developing its renewable energy sector.
4. Russia
Russia is considered to be one of the largest countries regarding production and consumption of fossils, thus making its carbon emissions very high. Some of these activities include oil and gas mining, the country's industrialization process, and heating processes owing to its cold climatic conditions. In 2024, there was an increase of 2.4% in carbon emission levels compared to 2023.
5. Brazil
Brazil's emissions come from deforestation and farming, rather than from energy consumption. Deforestation, especially that of the Amazonian forest, leads to massive emissions. Emissions of Brazil were quite low in 2024 and increased only by 0.2%. Brazil has made some progress in dealing with illegal deforestation during the presidency of Lula.
6. Indonesia
Indonesia is amongst the rapidly growing nations in terms of emissions in the world. The largest increase in emissions in percentages was recorded by Indonesia in 2024, accounting for an increase of 5.0% compared to other nations that emit greenhouse gases.
Factors that contribute to the large number of greenhouse gas emissions include the heavy use of coal as well as rapid economic development.
7. Japan
Japan stands out among the top emitters as one of the few nations that actually reduced its emissions. In 2024, Japan experienced a 2.8% decrease in greenhouse gas emissions, one of the best performances among major economies. Investments in energy efficiency, nuclear power restarts, and a growing shift toward renewables are helping Japan gradually lower its carbon footprint year on year.
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The numbers speak a lot; carbon emissions are still very much a grave concern on our planet Earth today. Even though some countries like Japan and the European Union are doing things right, we must remember that there is still so much work left to be done on the part of the largest carbon emitters on the globe. According to statistics, carbon emissions broke all records last year in 2024, totaling up to 53.2 gigatons, an increase of 1.3% compared to the year before, a continuous pattern since 1990. There is no denying that dealing with climate change calls for action from every country involved.
