China’s Carbon Emissions Could Begin to Decrease by 2025

The year 2025 could mark the beginning of a long-term decline in China’s greenhouse gas emissions, although achieving this objective still appears uncertain.

As the largest producer of carbon dioxide globally, China aims to reduce its emissions by 2030, a critical threshold to avert a climate emergency in the coming years.

With the first three quarters of 2025 completed, it’s premature to determine if emissions will see a slight rise or a decline for the entire year. An analysis by Lauri Milivirta presented by Carbon Brief at Finland’s Energy and Clean Air Research Center highlights these uncertainties.

Total emissions in China have remained steady or slightly decreased since March 2024. The significant expansion of solar and wind energy is central to this emissions reduction; however, fossil fuel demand continues to rise in various sectors, Millivirta noted.

“While emissions from the power, cement, and steel industries are declining, coal and oil consumption in the chemical sector is beginning to rise significantly again,” he stated.

From January to August, electricity demand surged by 320 terawatt-hours, marking a 4.9% year-on-year increase. In contrast, contributions from solar PV increased by 250 TWh, wind by 105 TWh, and nuclear by 30 TWh, resulting in a total surge of 385 TWh from these non-fossil sources.

The rate of solar energy growth in China is remarkable, according to Milivirta. “In just the first half of 2025, solar capacity installations were akin to setting up 100 solar panels every second,” he mentioned. “In the first nine months of this year, 240 gigawatts of solar capacity were added, reflecting a 50 percent increase compared to the previous year. This addition alone surpasses the total installed capacity in the United States.”

The trade tariffs enacted by former US President Donald Trump have yet to significantly influence China’s emissions; both the positive and negative aspects of the trade war have largely balanced each other out, Millibirta stated.

If emissions in China do begin to decline, it’s likely that global trends will follow suit, according to Li Shuo from the Asian Society Policy Institute in Washington, DC. “However, we require data from the upcoming years to verify trends, so we should be cautious about declaring a peak too early,” he added.

“The fate of the temperature targets outlined in the Paris Agreement relies on how swiftly China and developed nations advance their emissions reductions, alongside how developing nations manage to control emissions while promoting economic growth,” Li stated.

David Fishman expects emissions to decrease this year, but urges against excessive optimism. “Any number of events could unfold in the closing months of 2025,” he remarked.

“The rise in electricity demand has been fully met, and then partially addressed by renewable energy sources, slightly slowing or even reversing emissions growth in the power sector.”

Even if China’s emissions peak ahead of its 2030 target, a swift decline over the following five years seems unlikely, as consumers in China still utilize less energy per capita than those in higher-income nations, Fishman noted. “I anticipate that China’s emissions will likely stay flat until 2030, and we won’t witness any significant drop until post-2030.”