China's CO2 Emissions Fall for 21 Straight Months

China's carbon emissions dropped 1% in the final quarter of 2025, marking 21 consecutive months of flat or falling CO2 output since March 2024. For the world's largest carbon emitter, this represents a turning point that climate scientists have been waiting decades to see.

The numbers tell a remarkable story. Solar power output jumped 43% last year, while wind energy climbed 14% and nuclear rose 8%. This clean energy surge helped cut coal generation by nearly 2%, even as China's economy continued growing.

Almost every major sector saw emissions decline in 2025. Transportation emissions fell 3%, power generation dropped 1.5%, and building materials plummeted 7%. The country added a record 75 gigawatts of energy storage capacity, easily outpacing the 55 gigawatt increase in peak electricity demand.

Carbon Brief's analysis shows China's full-year 2025 emissions likely declined by 0.3%. While fossil fuel emissions ticked up just 0.1%, a 7% drop in cement-related CO2 tipped the balance toward an overall decrease.

The decline isn't just a blip. For nearly two years, China has proven that economic growth and falling emissions can happen simultaneously. The nation's carbon intensity, which measures fossil fuel emissions per unit of economic output, fell 4.7% in 2025 alone.

Why This Inspires

China accounts for roughly 30% of global carbon emissions. When the world's largest emitter starts trending downward for nearly two years, it sends ripples across international climate efforts.

This progress didn't require economic sacrifice. China's GDP grew while emissions fell, demonstrating that the clean energy transition can work at scale. The country installed more solar and wind capacity than the rest of the world combined in recent years, creating jobs and driving down technology costs globally.

The rapid expansion of battery storage solved one of renewable energy's biggest challenges: keeping the lights on when the sun isn't shining and wind isn't blowing. China's 75 gigawatt storage boom shows this technology is ready for prime time.

There are still hurdles ahead. China needs to accelerate its carbon intensity reductions by 23% over the next five years to meet its Paris Agreement commitments. The upcoming 15th five-year plan in March will reveal whether policymakers commit to maintaining this momentum or allow emissions to rise again before the official 2030 peak target.

But for now, the trend is unmistakable: the world's manufacturing powerhouse is proving that rapid decarbonization is possible, and it's happening right now.