China’s falling emissions amid Iran war spark hope of decarbonisation watershed
China's carbon dioxide emissions fell by 1% following the outbreak of the US-Israeli war on Iran, as a sharp drop in oil consumption and continued growth in electric vehicle and public transport use cushioned the impact of the strait of Hormuz crisis. The findings, based on second-quarter data from China's National Bureau of Statistics analysed by the Centre for Research on Energy and Clean Air for Carbon Brief, suggest the world's biggest greenhouse gas emitter may be approaching a genuine turning point in decarbonising its economy, with analysts predicting much of the lost oil demand may never return even if crude prices ease.
China cut oil imports by 32%, roughly a million barrels a day, helping stabilise global oil prices despite a 60% surge following US airstrikes in late February. About two-thirds of the import fall came from drawing down strategic stockpiles rather than reduced demand, though overall oil use still fell by 9%, and by 16% in transport, as electric cars, buses, trains and trucks took up the slack; in the first half of 2026, this EV shift displaced oil use equivalent to the UK's entire six-month consumption. Analysts noted this marked the first time China's emissions fell due to reduced oil use rather than lower coal consumption, with coal generation actually rising during the quarter, though experts believe the broader trend away from fossil fuels is strengthening.
In short
- China's CO2 emissions fell 1% after Iran war disrupted oil supplies
- EVs and public transport absorbed a 32% cut in oil imports
- Analysts say the shift to electrification may prove permanent
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The case for
The emissions fall suggests China’s rapid expansion of electric vehicles and public transport is beginning to reduce oil demand, even amid a major supply shock. If those changes persist as analysts expect, they could mark a lasting shift towards lower emissions and make the economy less exposed to future oil disruptions.
The case against
A single quarter during an exceptional crisis is not enough to establish a lasting decarbonisation turning point: much of the import drop came from stockpiles, and coal generation rose. If oil prices ease or demand rebounds, emissions could rise again, so the figures may show resilience to a temporary shock rather than a durable change in China’s fossil fuel use.
Explained simply
China is the world’s largest emitter of carbon dioxide, the main gas driving climate change. Its emissions have often been shaped by coal use, which supplies much of the country’s electricity, and by rising demand for oil in transport.
China has been expanding the use of electric cars, buses, trains and trucks, which can reduce the need for petrol and diesel. The Strait of Hormuz, a narrow sea route used by oil tankers, is also important to global energy supplies, so disruption there can affect oil prices and imports.
The key question is whether lower oil use reflects a lasting shift towards electric transport and other cleaner energy, or a temporary response to disrupted supplies. That distinction matters for China’s future emissions and for efforts to slow climate change.
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