Consumption-Based CO₂ Emissions
Standard emission inventories count CO₂ where goods are produced, but a large share of that carbon is embodied in goods traded across borders. Consumption-based accounting reallocates emissions to the countries where products are finally used. The result reshuffles responsibility: wealthy importers like the US, UK and Japan emit more than their territorial figures suggest, while export manufacturers like China and Russia emit less.
Key Consumption-Based Emissions Insights
Rich countries are net carbon importers
In 2023 US consumption-based CO₂ was 5,432 MtCO₂ versus 4,918 Mt produced domestically — a net import of 514 Mt. The UK consumed 487 Mt but produced only 308 Mt, importing a net 179 Mt embodied in goods made abroad.
China and India are net carbon exporters
China produced 12,172 MtCO₂ in 2023 but consumed just 10,857 Mt, exporting a net 1,315 Mt embodied in goods. India produced 3,063 Mt yet consumed 2,543 Mt, a net export of 520 Mt — carbon emitted to make products used elsewhere.
Roughly a fifth of global CO₂ crosses borders
About 22% of global CO₂ emissions are embodied in goods that are ultimately consumed in a different country. The traded share peaked near 26% around 2006 and has eased since as China's own consumption rose and supply chains shifted.
Trade adjustment widens per-capita gaps
Once trade is counted, US per-capita CO₂ rises from 14.3 to 15.8 tonnes and the UK's from 4.5 to 7.1 tonnes, while China falls from 8.6 to 7.6 and Russia from 11.9 to 9.7 — the consumer, not the factory, carries the footprint.
Production vs Consumption Emissions by Country (2023)
Territorial (production-based) emissions counted where CO₂ is released, compared with consumption-based emissions adjusted for carbon embodied in imports and exports, for the largest economies.
Key Finding: China's consumption figure (10,857 Mt) sits well below its production figure (12,172 Mt), while the US flips the other way — 5,432 Mt consumed vs 4,918 Mt produced.
Net CO₂ Trade Balance by Country (2023)
Net embodied CO₂ for each country, calculated as consumption-based minus production-based emissions. Positive bars are net importers of carbon; negative bars are net exporters.
Key Finding: China is the world's largest net exporter of embodied CO₂ at 1,315 MtCO₂, while the US is the largest net importer at 514 Mt.
Per-Capita CO₂: Production vs Consumption (2023)
Per-person CO₂ emissions on a production basis versus a consumption (trade-adjusted) basis, showing how trade shifts individual carbon footprints up or down.
Key Finding: Trade adjustment lifts the UK from 4.5 to 7.1 tonnes per person and the US from 14.3 to 15.8, but lowers China from 8.6 to 7.6 and Russia from 11.9 to 9.7.
Share of Global CO₂ Embodied in Trade
The percentage of global CO₂ emissions tied to goods produced in one country but consumed in another, tracked over time as global supply chains expanded and then matured.
Key Finding: The traded share of global CO₂ peaked at about 26% around 2006 and has since eased to roughly 22%.
UK Emissions: Production vs Consumption Over Time
The UK's production-based and consumption-based CO₂ since 1990, illustrating how falling territorial emissions partly reflect offshored manufacturing rather than pure decarbonization.
Key Finding: UK consumption-based CO₂ peaked near 765 MtCO₂ in 2007 — far above territorial emissions — but both have since fallen to 487 Mt and 308 Mt respectively.
Understanding Consumption-Based Emissions
Production-based vs consumption-based accounting
Production-based (or territorial) emissions allocate CO₂ to the country where it is physically released — for example, the coal a Chinese factory burns counts as Chinese emissions. Consumption-based accounting instead allocates emissions to the country where the final good or service is consumed, so the carbon from that factory is reassigned to whoever buys the product. The difference for any country equals the net CO₂ embodied in its imports minus its exports.
How carbon embodied in trade is estimated
Consumption-based figures from the Global Carbon Project are built using global multi-region input-output models that trace goods and intermediate inputs across borders and apply each country's carbon intensity of electricity, industry and transport. Adding net imported emissions to territorial emissions yields the consumption total. The method currently covers about 119 countries because it requires detailed bilateral trade and sector emission data.
Why it matters for fairness
When a country cuts territorial emissions partly by importing carbon-intensive goods, its climate progress can be overstated — a pattern sometimes called carbon leakage. Consumption-based accounting reveals that wealthy importers such as the US, UK, Japan and Germany carry a larger real footprint than their inventories suggest, which matters for debates over historical responsibility, border carbon adjustments and equitable mitigation.
Caveats and limitations
Trade-adjusted estimates carry more uncertainty than territorial inventories because they depend on modeled trade flows and assumed emission intensities, and they are typically released with a longer lag. Figures here are fossil-fuel and cement CO₂ for 2023 and exclude land-use change. Neither accounting method is uniquely correct — they answer different questions about where responsibility for emissions should sit.