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China Briefing handpicks and explains the most important climate and energy stories from China over the past fortnight. Subscribe for free here.
Key developments
Climate leadership and cooperation
ENVOY REMARKS: Xinhua published an exclusive interview with Chinese climate envoy Liu Zhenmin, in which he spoke about how China-Europe cooperation could make a “positive contribution” to combating climate change. In the interview, Liu said that developed countries were “generally worried about who will share the responsibilities that the US should bear” after its withdrawal from the Paris Agreement, adding that China “deeply regretted” the “shrinking space” for US-China climate cooperation. The outlet quoted Liu saying: “However, we must see that China and the US do not have fundamental differences in the field of climate change, but rather have broad space for cooperation.”
EU AMBIVELANCE: Meanwhile, the EU’s ambassador to China, Jorge Toledo, warned that the EU may not hold an expected “high-level economic [and] trade dialogue” with China in July, due to current negotiations over Chinese EV tariffs and supply chains “not making progress”, reported the Hong Kong-based South China Morning Post (SCMP). European countries, such as the Netherlands, France and Germany, on the other hand, have expressed interest in more collaboration in areas such as climate and the low-carbon transition, said state-supporting media the Global Times. Belinda Schäpe, China policy analyst at Centre for Research on Energy and Clean Air (CREA), nevertheless wrote on LinkedIn that while both China and Germany “expressed support” for tackling climate change, it is “unclear how this will translate into Germany’s position on cooperation in areas like energy transition or climate diplomacy”.
EARLY PEAK?: China’s emissions will “likely peak a few years ahead of its self-set deadline of 2030”, Bloomberg said, reporting comments by Zhu Guangyao, who was the country’s vice minister of finance from 2010-2018 and who cited analysis recently published by Carbon Brief. The outlet quoted Zhu saying: “It’s most likely China will realise the peak of carbon emissions a few years before 2030…That’s good news for China, also good news for Asia, for the whole world.” Meanwhile, the SCMP published a comment article by former UN secretary general Ban Ki-moon on China’s “green energy leadership”. In the article, Ban called on China to target a 30% reduction in emissions below 2023 levels by 2035 in its next international climate pledge (nationally determined contribution, NDC).
New plan for ‘green’ manufacturing
‘GREEN TRANSFORMATION’: China’s central government approved an action plan for “advancing the green and low-carbon development” of the manufacturing sector between 2025 and 2027 at a State Council executive meeting, reported state news agency Xinhua. The full text of the action plan is not yet public. The meeting called for “deep[ening the] green transformation of traditional industries” while “accelerat[ing] innovation in green technologies”, added the outlet. The state-owned newspaper Securities Daily said that the policy extends “intensive” regulatory support and will affect a range of industries, including steel, metals and construction. About 20% of the “total output of China’s manufacturing industry” in 2024 had already come from “national-level green [factory] plants”, added the newspaper. (According to the “general principals” outlined by the Chinese government, such plants have tighter requirements on their emissions of greenhouse gases and other pollutants.)
RECTIFY THE ‘RAT RACE’: Meanwhile, the National Development and Reform Commission (NDRC) commented on “neijuan” (内卷) – officially translated as “rat race competition” that leads to oversupply in affected industries, including clean energy, steel and oil refining, reported Xinhua. According to the newswire, the NDRC said at its May press conference that this “rat race” had “disrupted” fair competition and “must be rectified”. According to the NDRC transcript, government officials called for eliminating “inefficient and backward production capacity” in the oil refining and steel industries, “preventing blind new construction” in the coal chemical and aluminium industries, and “guiding” “new-energy vehicle” (NEV) and solar companies to “focus on technology research and development”. Nevertheless, the officials stated that the majority of the investments the NDRC had approved from January to April this year were still in the “energy” and “advanced technology” sectors, among others, reported Chinese media outlet Dazhong News. The NDRC also said its “two new” policy “stimulated green consumption” of products such as NEVs, according to the transcript. Separately, the production of NEVs rose by 39% in April, said the Communist party-affiliated People’s Daily, adding that China’s “shift toward intelligent and green development is gaining momentum”.
‘Record’ solar added as policy deadline looms
SOLAR RUSH: China installed a “record” 105 gigawatts (GW) of solar capacity between January and April 2025, industry outlet PV Tech said, citing a recent data release by the National Energy Administration (NEA). It added that “April alone” accounted for 45GW of new additions – compared to a total of 46GW solar installations in China between January and March 2024 – as a deadline set by a new renewable pricing policy “triggered a project installation rush”. [Outside China, the US is the only country in the world to have more than 105GW of solar capacity in total. The UK has 18GW.]
THERMAL FALL: Analysis by thinktank Climate Energy Finance found that the amount of new solar installations between January and April was eight times larger than that of new thermal capacity (13GW, mainly coal). It added that China’s coal plants were only running 46% of the time on average in the first four months of 2025, saying that this was a “record low”. Similarly, Reuters reported that “thermal power generation in China, fuelled mainly by coal, fell 2% in April and 4% from January to April amid slower overall power output growth”. New data from energy thinktank Ember found that wind and solar power generated 26% of the country’s electricity in April 2025, the “highest monthly share on record”.
ROOFTOP ‘BOOM’: Meanwhile, separate data from consultancy Rystad Energy found that, of the 60GW of solar installed between January and March 2025, rooftop solar installations accounted for 36GW, marking the “highest quarterly total for distributed solar in [China’s] history”, solar news outlet PV Magazine reported. Industry news outlet SolarQuarter said that, according to Rystad Energy’s forecasts, the rooftop solar installation “boom” will continue through to June 2025, “potentially pushing total distributed solar capacity additions for the year to 130GW”.
SOLAR CYBER SCARE: Reuters reported that the US government is “reassessing the risk posed by Chinese-made” renewable energy components after “rogue communication devices not listed in product documents ha[d] been found in some Chinese solar power inverters by US experts”. The newswire added that it “was unable to determine how many solar power inverters and batteries they have looked at”. Following this, the Japanese government also “launched an investigation into Chinese-made solar panels”, reported SCMP. Tom Nunlist, associate director at consultancy firm Trivium China, wrote on LinkedIn that while “an industrial-scale plot to disrupt the US power grid” cannot be ruled out, it is “far more likely that we’re dealing with commonplace bill of materials errors”. He added that “given the atmosphere, I think there’s a good chance this will get blown way out of proportion”. Meanwhile, the industry association SolarPower Europe called for stronger cybersecurity rules for Europe’s clean-energy installations, following the discovery of “unexplained electronic components in imported circuit boards from an unnamed country destined for [Denmark’s] energy infrastructure”, PV Magazine said. It added that the “suspicious elements were not solar components”.
Extreme weather sweeping across China
RAIN AND FLOODING: Four people were killed by “torrential rain” in Guizhou province in southwest China and 17 people remained missing, reported Reuters on 23 May. China is facing “hotter and longer heatwaves and more frequent and unpredictable heavy rain as a result of climate change” and its “huge population” made the country “especially vulnerable to the effects of climate change, authorities have said”, added the outlet.
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EXTREME HEAT: Temperatures in north China reached as high as 43C in May, according to China Qixiang Aihaozhe, a popular scientific blog. State broadcaster CGTN reported that many places in the provinces of Henan and Hebei broke local temperature records for May and that ground temperatures in “multiple places” broke 70C on 20 May. The outlet noted that May is a “critical” period for maximising wheat harvest yields. Reuters reported that China disbursed 1.4bn yuan ($194m) for “agricultural production disaster prevention and relief”. Meanwhile, cooling demand from air conditioners could drive electricity demand to be about 100GW higher than last year, Bloomberg cited the NEA as saying. Lauri Myllyvirta, lead analyst at CREA, posted on Bluesky that, even if this demand does disrupts the recent plateau in China’s emissions, the “structural trend” of clean-energy additions pushing overall emissions down will continue to drive reductions in the long-term.
68%
The share of China’s overseas energy investments that went to solar and wind projects between 2022-2023, reported Inside Climate News citing data from Boston University’s Global Development Policy Center. Only 13% of investments had gone into solar and wind from 2000-2021, added the outlet, noting that 2021 was the year that China pledged to stop funding overseas coal projects.
Spotlight
What is China’s ‘Shenzhen model’ for city-level low-carbon transition?
Shenzhen, a city bordering Hong Kong that is known for pioneering China’s economic reforms, is leading the country in several carbon mitigation measures and is seen as a “pilot” for the construction of “low-carbon cities”.
Carbon Brief looks back at Shenzhen’s efforts to date and assesses its progress on carbon mitigation. The full article will be available on Carbon Brief’s website.
Electric transportation
Since the 2000s, Shenzhen has developed strategies for “low-carbon development”. Part of this included nourishing the growth of a number of “strategic emerging industries”, such as “new-energy vehicles” (NEVs).
According to a government work report, Shenzhen – whose population makes up 1% of the country’s total – produced 22% of China’s NEVs in 2024. NEV also comprised 77% of the new car sales in Shenzhen last year, significantly higher than the national share of 48%.
The city has also replaced all of its buses, taxis and ride-hailing cars with electric versions – the first city to have done so in China.
Heran Zheng, lecturer in sustainable infrastructure economics and finance at University College London (UCL), told Carbon Brief that a city’s green transition mainly requires two focuses: “transport transition” and “industry decarbonisation”.
With no major heavy industries, Shenzhen has an “advantage” in industry low-carbon transition, said Zheng, which allows it to set “more ambitious” emissions targets.
Carbon control
Shenzhen was China’s “first city to explicitly state its commitment to the ‘dual control [of carbon]’ system”, according to Dialogue Earth. It issued two “implementation plans” towards this effort and developed a city-level carbon emissions cap.
Shenzhen plans to reduce its energy intensity by 14.5% before the end of 2025, compared to 2020 levels. The national energy intensity target is 13.5% during the same period.
Zheng said that Shenzhen’s commitment “should be within its capacity”, adding:
“There are three major carbon mitigation areas – steel, cement and electricity. Shenzhen has no major steel and cement industries, so it only needs to largely focus on electricity…In addition, the city is a technology hub. A lot of high-emission manufacturers have moved out of Shenzhen to its neighbouring cities.”
Another “big difference” between Shenzhen and other cities is that “Shenzhen has its own nuclear power”, said Zheng, which is “important” for the city’s electricity transition – the remaining sector that Shenzhen needs to put efforts on towards green transition.
Low-carbon energy
According to a 2021 report, nuclear power is Shenzhen’s “largest local power source”. It contributed 35% of the city’s total power generation in 2021.
Nuclear dwarfs all the other clean energy sources feeding into the city’s grid. The Shenzhen local authority’s 2025 government work report says current solar power capacity stands at about 1GW – and it does not mention wind capacity.
Its “14th five-year plan for climate change response” says that Shenzhen’s renewable energy capacity has “little room” for future growth due to “scarce” energy resources and “limited” land for wind and solar power.
In 2024, China approved the construction of more nuclear reactors in Shenzhen’s neighbouring city of Huizhou.
The Shenzhen government also aims to “raise the combined share of natural gas, nuclear and renewable energy to 90% in 2025, up from the current figure of 77%, which is noticeably ahead of the nationwide figure of 52%”, according to research published in 2022.
‘Green finance’
Shenzhen was one of the first seven cities and provinces in China that established a local “pilot” emissions trading system (ETS) in 2013, ahead of the national rollout in 2021.
Yan Qin, carbon analyst at consultancy firm ClearBlue Markets, told Carbon Brief that despite Shenzhen’s plans to expand the coverage of its ETS, most pilot ETSs are seeing their coverage “shrinking” due to enterprises leaving to join the national ETS.
In the meantime, Shenzhen issued China’s first overseas sales of “green government bonds” in 2021 in Hong Kong. In contrast, China’s national sovereign bonds were only available to international buyers from April 2025.
Zheng said that the impact of the green bonds is “hard to evaluate”. He added that projects, such as sewage treatment, can “also fall into the category of ‘green bonds’”. Although linked to energy efficiency improvement, they nonetheless make only “limited contributions” to cutting carbon emissions, he added.
‘Shenzhen model’
The local government and media outlets have touted the city’s achievements on climate as the “Shenzhen model”.
But Shenzhen’s journey is not all “replicable”, said Shen Xinyi, analyst and China team lead at the Centre for Research on Energy and Clean Air (CREA), adding that “Shenzhen capitalised on the opportunities of its era”.
Zheng said Shenzhen can “only represent a [certain] type of city in China, the ‘top tier’, such as Beijing, Shanghai and Guangzhou”. He added:
“There are more than 300 cities in China, all facing unique transition situations. It is meaningless for coal-heavy industrial cities to learn from Shenzhen.”
Other cities must “adapt strategies according to their unique conditions”, Shen added.
This report is by freelancing climate journalist Henry Zhang and Carbon Brief’s China section editor Wanyuan Song.
Watch, read, listen
CRITICAL MINERALS: An episode of consulting firm Trivium China’s podcast discussed China’s critical mineral export controls.
‘MARSHALL PLAN’?: Sam Geall, Dialogue Earth’s outgoing chief executive officer, published a comment on China’s new role amidst shifting “climate politics”.
US-CHINA DECOUPLING: In an exclusive interview with Chinese financial media Caixin, Huang Hanquan, dean of the Chinese Academy of Macroeconomic Research – a thinktank under the direct management of NDRC – said there are still “risks” in US-China decoupling.
‘ZERO-CARBON’ PARKS: The 21st Century Business Herald, a Chinese media outlet, published an interview with Chai Qimin, director of the International Cooperation Department at the National Center for Climate Change Strategy and International Cooperation, a thinktank under the China’s Ministry of Ecology and Environment, talking about “zero-carbon industrial parks”.
New science
Peer effects on rural household carbon emissions in China
Scientific Reports
New research found that the “peer effect” – a phenomenon where an individual’s behavior and attitudes are influenced by their peers – has a “significant positive impact” on carbon emissions in rural China. The paper quantified emissions from rural Chinese households over 2012-20 using data from “China family panel studies” and “carbon emission accounts and datasets”. The authors found that carbon emissions from “low social status families” are influenced by those of “high social status families”. They added that the “peer effect has a relatively greater impact on the carbon emissions of farmers in the eastern region”.
The impact of carbon news coverage on corporate green transformation
Scientific Reports
A new study of Chinese companies found that “carbon news coverage significantly enhances the corporate green transformation”. The authors examined the effect of “carbon news coverage” on the green transformation of “Chinese A-share listed enterprises” over 2013-21. They found that “carbon news coverage” can help enterprises with their “green transition” by “alleviating financing constraints, strengthening environmental information disclosure and increasing R&D investment”. They added that “carbon emissions trading market and carbon news coverage serve as multiple co-regulations of formal and informal environmental regulation, synergistically advancing enterprises’ green transformation”.
China Briefing is compiled by Wanyuan Song and Anika Patel. It is edited by Wanyuan Song and Dr Simon Evans. Please send tips and feedback to china@carbonbrief.org
The post China Briefing 29 May 2025: The ‘Shenzen model’; Record solar growth; NDRC rejected industrial ‘rat race’ appeared first on Carbon Brief.
Drought and heatwaves occurring together – known as “compound” events – have “surged” across the world since the early 2000s, a new study shows.
Compound drought and heat events (CDHEs) can have devastating effects, creating the ideal conditions for intense wildfires, such as Australia’s “Black Summer” of 2019-20 where bushfires burned 24m hectares and killed 33 people.
The research, published in Science Advances, finds that the increase in CDHEs is predominantly being driven by events that start with a heatwave.
The global area affected by such “heatwave-led” compound events has more than doubled between 1980-2001 and 2002-23, the study says.
The rapid increase in these events over the last 23 years cannot be explained solely by global warming, the authors note.
Since the late 1990s, feedbacks between the land and the atmosphere have become stronger, making heatwaves more likely to trigger drought conditions, they explain.
One of the study authors tells Carbon Brief that societies must pay greater attention to compound events, which can “cause severe impacts on ecosystems, agriculture and society”.
Compound events
CDHEs are extreme weather events where drought and heatwave conditions occur simultaneously – or shortly after each other – in the same region.
These events are often triggered by large-scale weather patterns, such as “blocking” highs, which can produce “prolonged” hot and dry conditions, according to the study.
Prof Sang-Wook Yeh is one of the study authors and a professor at the Ewha Womans University in South Korea. He tells Carbon Brief:
“When heatwaves and droughts occur together, the two hazards reinforce each other through land-atmosphere interactions. This amplifies surface heating and soil moisture deficits, making compound events more intense and damaging than single hazards.”
CDHEs can begin with either a heatwave or a drought.
The sequence of these extremes is important, the study says, as they have different drivers and impacts.
For example, in a CDHE where the heatwave was the precursor, increased direct sunshine causes more moisture loss from soils and plants, leading to a drought.
Conversely, in an event where the drought was the precursor, the lack of soil moisture means that less of the sun’s energy goes into evaporation and more goes into warming the Earth’s surface. This produces favourable conditions for heatwaves.
The study shows that the majority of CDHEs globally start out as a drought.
In recent years, there has been increasing focus on these events due to the devastating impact they have on agriculture, ecosystems and public health.
In Russia in the summer of 2010, a compound drought-heatwave event – and the associated wildfires – caused the death of nearly 55,000 people, the study notes.
The record-breaking Pacific north-west “heat dome” in 2021 triggered extreme drought conditions that caused “significant declines” in wheat yields, as well as in barley, canola and fruit production in British Columbia and Alberta, Canada, says the study.
Increasing events
To assess how CDHEs are changing, the researchers use daily reanalysis data to identify droughts and heatwaves events. (Reanalysis data combines past observations with climate models to create a historical climate record.) Then, using an algorithm, they analyse how these events overlap in both time and space.
The study covers the period from 1980 to 2023 and the world’s land surface, excluding polar regions where CDHEs are rare.
The research finds that the area of land affected by CDHEs has “increased substantially” since the early 2000s.
Heatwave-led events have been the main contributor to this increase, the study says, with their spatial extent rising 110% between 1980-2001 and 2002-23, compared to a 59% increase for drought-led events.
The map below shows the global distribution of CDHEs over 1980-2023. The charts show the percentage of the land surface affected by a heatwave-led CDHE (red) or a drought-led CDHE (yellow) in a given year (left) and relative increase in each CDHE type (right).
The study finds that CDHEs have occurred most frequently in northern South America, the southern US, eastern Europe, central Africa and south Asia.
Threshold passed
The authors explain that the increase in heatwave-led CDHEs is related to rising global temperatures, but that this does not tell the whole story.
In the earlier 22-year period of 1980-2001, the study finds that the spatial extent of heatwave-led CDHEs rises by 1.6% per 1C of global temperature rise. For the more-recent period of 2022-23, this increases “nearly eightfold” to 13.1%.
The change suggests that the rapid increase in the heatwave-led CDHEs occurred after the global average temperature “surpasse[d] a certain temperature threshold”, the paper says.
This threshold is an absolute global average temperature of 14.3C, the authors estimate (based on an 11-year average), which the world passed around the year 2000.
Investigating the recent surge in heatwave-leading CDHEs further, the researchers find a “regime shift” in land-atmosphere dynamics “toward a persistently intensified state after the late 1990s”.
In other words, the way that drier soils drive higher surface temperatures, and vice versa, is becoming stronger, resulting in more heatwave-led compound events.
Daily data
The research has some advantages over other previous studies, Yeh says. For instance, the new work uses daily estimations of CDHEs, compared to monthly data used in past research. This is “important for capturing the detailed occurrence” of these events, says Yeh.
He adds that another advantage of their study is that it distinguishes the sequence of droughts and heatwaves, which allows them to “better understand the differences” in the characteristics of CDHEs.
Dr Meryem Tanarhte is a climate scientist at the University Hassan II in Morocco, and Dr Ruth Cerezo Mota is a climatologist and a researcher at the National Autonomous University of Mexico. Both scientists, who were not involved in the study, agree that the daily estimations give a clearer picture of how CDHEs are changing.
Cerezo-Mota adds that another major contribution of the study is its global focus. She tells Carbon Brief that in some regions, such as Mexico and Africa, there is a lack of studies on CDHEs:
“Not because the events do not occur, but perhaps because [these regions] do not have all the data or the expertise to do so.”
However, she notes that the reanalysis data used by the study does have limitations with how it represents rainfall in some parts of the world.
Compound impacts
The study notes that if CDHEs continue to intensify – particularly events where heatwaves are the precursors – they could drive declining crop productivity, increased wildfire frequency and severe public health crises.
These impacts could be “much more rapid and severe as global warming continues”, Yeh tells Carbon Brief.
Tanarhte notes that these events can be forecasted up to 10 days ahead in many regions. Furthermore, she says, the strongest impacts can be prevented “through preparedness and adaptation”, including through “water management for agriculture, heatwave mitigation measures and wildfire mitigation”.
The study recommends reassessing current risk management strategies for these compound events. It also suggests incorporating the sequences of drought and heatwaves into compound event analysis frameworks “to enhance climate risk management”.
Cerezo-Mota says that it is clear that the world needs to be prepared for the increased occurrence of these events. She tells Carbon Brief:
“These [risk assessments and strategies] need to be carried out at the local level to understand the complexities of each region.”
