These countries emit the most CO2 in the world
Even as renewable energy production is on the rise globally, the persistently high levels of CO2 emissions remain a cause for concern. These emissions, along with other greenhouse gases, worsen the challenges tied to climate change.
Certain adverse effects can be averted through a concerted effort to bring about positive changes and promote green transformation on a global scale. However, collective action is essential, particularly from countries that contribute the most to greenhouse gas emissions. Which countries fall into this category?
Ranking of countries in terms of emissions
The forthcoming charts present the current state of affairs. Information regarding the emission intensity of individual countries was sourced from the Joint Research Center, a division of the European Commission. This unit is dedicated to offering scientific and technical assistance in shaping and advancing EU policies.
The rankings represent CO2 emissions stemming from human activities, with data for the year 2021. It’s important to note that these lists exclude dependent territories with populations fewer than 20,000 and Palau—an island nation in the Pacific Ocean with an approximate population of 18,000. These are regions that, from a global perspective, are considered to exert no significant influence.
Global Data


Data per person

Who are the biggest emitters?
The chart distinctly illustrates that these are primarily the world’s major economies, along with what are often referred to as emerging economies.
On a global scale, about one-third of the CO2 emissions stemming from human activities come from China, with the United States following closely. It’s noteworthy that these countries also lead the world in renewable energy production. The European Union, as a collective, holds the third position in terms of CO2 emissions. In contrast, Poland is ranked 19th in this regard, or 18th if we exclude the EU as a whole from the comparison.
Nevertheless, it’s important to highlight that the rankings undergo a transformation when considering the measure of CO2 emissions per person. In this aspect, Qatar emerges as the frontrunner. Notably, China and the United States switch positions entirely in this scenario. Although we’ve displayed data for 30 countries, Poland doesn’t appear in this particular chart due to its rank. However, if the ranking encompassed more positions, Poland would secure the 33rd spot, with a per-person emission of 8.48 tons of CO2. For context, the average across the European Union stands at 6.25 tons of CO2 per person.
Why is reducing CO2 emissions so important?

Emissions pose a threat to people and the planet
The consequence of these detrimental emissions is the warming of the global climate, which gives rise to issues like more frequent floods, droughts, and unanticipated heavy rainfall. These phenomena, in turn, lead to a rise in sea and ocean levels. The most concerning aspect is the vanishing glaciers.
These extreme events are not solely bothersome and disruptive to our daily lives, but they can present a significant peril to the well-being and lives of both the current and upcoming generations.
Economic problems in the most vulnerable regions
Countries situated in regions most vulnerable to the impacts of global warming face a range of economic and practical challenges. Among these are:
- Reduced Arable Land: The availability of land suitable for cultivating food crops diminishes, impacting food production.
- Challenging Agricultural Conditions: Growing conditions become more demanding, affecting the viability of agriculture.
- Declining Agricultural Output: Maintaining current levels of agricultural productivity becomes increasingly challenging.
- Loss of Indigenous Species: Traditional species may disappear due to changing environmental conditions.
- Material Losses from Severe Weather: Hazardous weather events result in property damage and financial losses.
- High Reconstruction Costs: The need to rebuild towns and cities due to climate-related damage incurs substantial expenses.
- Elevated Health Concerns: Citizens face heightened health issues, necessitating increased spending on treatment and preventive measures.
Sources:
Crippa, M., Guizzardi, D., Banja, M., Solazzo, E., Muntean, M., Schaaf, E., Pagani, F., Monforti-Ferrario, F., Olivier, J., Quadrelli, R. ., Risquez Martin, A., Taghavi-Moharamli, P., Grassi, G., Rossi, S., Jacome Felix Oom, D., Branco, A., San-Miguel-Ayanz, J. and Vignati, E. , CO2 emissions of all world countries ? JRC, IEA, PBL 2022 Report, EUR 31182 EN, EUR 31182 EN, Publications Office of the European Union, Luxembourg 2022, JRC130363, publications.jrc.ec.europa.eu