By Thanasis Petras
International Correspondent | Chief Editor & Publisher — Diethni.gr
Economic growth does not always increase carbon emissions. The relationship depends on how an economy produces energy, uses resources and supplies the goods and services people consume.
The contrast was visible in 2024. According to the International Energy Agency’s Global Energy Review 2025, the world economy grew by 3.2%, while energy-related carbon dioxide emissions increased by 0.8%. Across advanced economies, economic output grew by approximately 1.7%, while those emissions fell by 1.1%.
These outcomes demonstrate two different forms of progress. Globally, emissions grew more slowly than economic activity. In advanced economies, emissions declined despite economic expansion.
The distinction matters: producing less carbon dioxide per unit of output does not necessarily mean producing less carbon dioxide overall.
Economic growth and emissions can move in opposite directions
Researchers distinguish between relative and absolute “decoupling”.
Relative decoupling means that emissions grow more slowly than economic output. An economy becomes less carbon-intensive, but its total emissions can still rise.
Absolute decoupling means that economic output grows while total emissions fall.
| Annual change in 2024 | World | Advanced economies |
|---|---|---|
| Real economic output | +3.2% | +1.7% |
| Energy-related CO₂ emissions | +0.8% | −1.1% |
Source: International Energy Agency, Global Energy Review 2025. Advanced economies follow the IEA’s grouping. These figures concern energy-related CO₂, rather than all greenhouse gases.
The evidence also extends beyond individual years. The peer-reviewed Global Carbon Budget 2024, published in 2025, identified 23 countries where fossil CO₂ emissions decreased significantly while economies grew significantly during 2014–2023. Those countries accounted for approximately 23% of global fossil CO₂ emissions over the decade.
This establishes that growth and falling emissions can coexist over an extended period. It does not mean that emissions fell every year, that all greenhouse gases declined, or that every country followed the same path.
The United Kingdom provides a long-term example
The UK’s Office for National Statistics reported that residence-based greenhouse gas emissions fell by 43% between 1990 and 2023. Over the same period, emissions per person declined while real gross value added per person generally increased.
The ONS also reported that emissions intensity across the economy, excluding household emissions, fell by 71.4%. Emissions from the energy industry declined by 66%, making it an important contributor to the overall reduction.
These measures describe different aspects of the transition. Total emissions show the quantity released. Emissions intensity shows how much is released relative to economic output. Per-person measures account for population.
They should not be treated as interchangeable. Falling emissions per person can accompany rising total emissions if the population grows. Likewise, improving emissions intensity does not guarantee an absolute reduction.
The UK findings nevertheless show that the relationship between economic activity and emissions is not fixed.
What allows emissions to fall while economies grow?
Economic output has no single, unchanging carbon requirement. Its footprint depends on technologies, fuels, efficiency and the composition of economic activity.
Cleaner energy can reduce the emissions associated with electricity generation. More efficient buildings, equipment and industrial processes can reduce the energy required to deliver a service. Changes in the balance between industries can also alter an economy’s emissions intensity.
A study led by Corinne Le Quéré, published in Nature Climate Change in 2019, examined declining CO₂ emissions in 18 developed economies during 2005–2015. The researchers identified renewable energy replacing fossil fuels and decreasing energy use as contributors. They also examined the contribution of slower economic growth.
That last point is essential. An economy can grow while emissions fall without growth itself causing the reduction. The outcome may reflect cleaner energy, efficiency improvements, changes in production and weaker expansion in energy-intensive activities.
A shift towards services is also not equivalent to eliminating a material footprint. Services still depend on electricity, buildings, transport, equipment and international supply chains.
Understanding decoupling therefore requires examining the sources of the reduction, rather than simply observing two national trends moving in opposite directions.
Have richer countries moved their emissions abroad?
A country can reduce domestic emissions by closing a factory and importing the same products instead. Production emissions then appear in the exporting country’s inventory, although consumption continues elsewhere.
This is why the accounting boundary matters.
Territorial emissions record emissions within a country’s borders. Consumption-based emissions account for the emissions associated with domestic consumption, including those embodied in imported goods and services and excluding those embodied in exports.
A territorial decline alone cannot establish that a country’s consumption footprint has fallen.
However, the evidence does not support dismissing all national reductions as outsourcing. The IPCC’s 2022 assessment reported that at least 18 countries had sustained reductions in production-based greenhouse gas emissions and consumption-based CO₂ emissions for more than ten years.
This shows that some reductions persist after trade is considered. It does not mean that imports are unimportant, or that domestic and consumption-based emissions decline at identical rates.
Consumption estimates also have limitations. They require models linking production, trade and expenditure across international supply chains. Their results depend on the quality of those data and the assumptions used to allocate emissions.
The appropriate test is to examine both domestic production and consumption footprints, using consistent periods and clearly defined measures.
National progress is not yet a global outcome
Countries achieving absolute decoupling represent meaningful progress. But their reductions can be outweighed by increases elsewhere.
The Global Carbon Budget 2024 reported that global fossil CO₂ emissions increased by an average of approximately 0.6% annually during 2014–2023. Over that decade, emissions declined by approximately 2.1% annually in the European Union and 1.2% in the United States, while increasing by approximately 1.9% in China and 3.6% in India.
These figures describe emissions trends, rather than proving how much economic growth caused them. They also concern fossil CO₂, not the full range of greenhouse gases.
They nevertheless explain why national reductions do not automatically translate into a global decline. The atmosphere receives emissions from all countries, regardless of where production occurs or who ultimately consumes its output.
What counts as convincing evidence?
A strong assessment of growth and emissions should meet several conditions.
Economic output should be measured in real, inflation-adjusted terms. Nominal growth can reflect rising prices rather than increased production.
Emissions boundaries should remain consistent. Energy-related CO₂, fossil CO₂ and all greenhouse gases are different measures. GDP and gross value added are also related
