China’s power sector is both the world’s largest emitter and the largest source of clean-energy growth, making it essential to global climate efforts.
This means it will be a key part of China’s next nationally determined contribution (NDC) – its climate pledge under the Paris Agreement for 2035 – which all countries are expected to publish by this year.
Yet, at the same time, Chinese policymakers are grappling with perceived tensions between ensuring a reliable energy supply amid uncertain demand growth and future cost trajectories, which have the potential to weigh down climate ambition.
In our new study, co-authored with experts from Tsinghua University and published in Cell Reports Sustainability, we model pathways for China’s power system up to 2035 that are consistent with its wider climate goals, incorporating a wide range of scenarios and uncertainties currently being debated in the country.
We find that China would need to deploy 2,350-2,780 gigawatts (GW) of wind and solar by 2030 and 2,910-3,800GW by 2035 – roughly double current levels – to be consistent with a target of limiting the rise in global temperatures to 2C this century.
Furthermore, ensuring that the share of wind and solar generation reaches around 40% by 2030 and 50% by 2035 would set the power sector up for the longer-term transition to carbon neutrality by 2060.
Electricity generation from non-fossil fuels more broadly would reach around 50% by 2030 and more than 70% by 2035.
China’s climate ambitions
China’s “dual-carbon” goals, announced in 2020, aim to peak carbon emissions by 2030 and reach carbon neutrality by 2060. The country has already surpassed its 2030 renewable deployment target – 1,200GW of wind and solar – six years ahead of schedule, due to record-breaking annual additions of around 300GW of new capacity for two years in a row.
However, new coal-power developments and rapid growth in electricity demand pose a threat to meeting China’s other targets, such as emissions intensity and share of non-fossil fuel in the energy mix.
China began building nearly 95GW of new coal capacity in 2024, representing 93% of the world’s new coal capacity under construction.
If completed, China’s coal fleet – already the largest in the world – would expand to an installed capacity of 1,190GW.
This resurgence stems in large part from concerns surrounding energy security. China faced unprecedented power shortages in 2021 and 2022, while annual electricity demand has recently reached 10 petawatt-hours (PWh, or 10,000 terawatt hours) – a level that most studies predicted would not be reached until 2030.
This keeps the door open to continued growth in China’s electricity generation and emissions from coal, unless the expansion of clean energy is able to keep pace.
Setting the renewable energy pace
Our research looks at the rate of growth from clean energy that would be required to not only meet China’s rapidly rising demand for electricity, but also to push down its coal generation and squeeze emissions from the power sector.
We simulate a range of system “baselines” for 2030 and “scenarios” for 2035, under varying assumptions about electricity demand growth, carbon emissions limits, renewable energy costs and meteorological conditions.
The model includes detailed representations of where renewable energy capacity could be built and how the power sector could be operated efficiently.
It evaluates wind and solar resources and deployment potential at a level that is detailed enough to help capture regional differences and localised impacts, such as land use, socio-economic benefits and infrastructure needs.
The results are organised into 15 scenarios, categorised into three main groups: moderate growth in electricity demand (group A); rapid electrification (group B); and ambitious decarbonisation (group C).
The modelling is based around two different scenarios for China that are compatible with a global limit of 2C warming this century.
The basic 2C trajectory would see China’s power-sector emissions fall to 36% below 2024 levels by 2035, whereas the more ambitious 2C trajectory has a 42% decline.
The chart below shows recent electricity demand (left) and the carbon dioxide (CO2) emissions of China’s power sector (right), as well as how these might evolve under the different scenarios modelled for the paper.
The modelling accounts for recent trends suggesting that China’s electricity demand could reach 13.5PWh by 2035 (groups A and C). However, accommodating faster demand growth under a rapid electrification scenario (group B) would require China to deploy low-carbon energy even more rapidly, if it is to maintain pace with climate targets.
The modelling shows that wind and solar energy would need to supply around 40% of China’s electricity by 2030, if the country aims to remain on track for 2C of global warming. Solar and wind power generation would need to then rise to 50% by 2035 – up from 17.9% in 2024.
This growth would substantially reduce the system’s reliance on coal and other fossil fuels, which would decrease to 35% of generation in 2030 and 25% in 2035.
The more ambitious scenario, which targets limiting global warming since the pre-industrial period to between 1.5C and 2C, would lead to even higher wind and solar generation shares of 44% by 2030 and 54% by 2035.
Under the different scenarios, China’s wind and solar capacity would rise from around 1,700GW today to 2,350-2,780GW by 2030 and 2,910-3,800GW by 2035. Meeting this level of renewable deployment would require annual additions of 120-220GW.
Recent wind and solar additions have already exceeded this pace, but challenges with grid integration and supporting infrastructure could, nevertheless, slow future large-scale buildouts.
According to industry reports, 6.8% of wind and 6.1% of solar power generation were “curtailed” in the first four months of 2025, meaning the output could not be accommodated by the electricity grid and was wasted.
At the provincial level, wind and solar curtailment rates exceeded 10% in renewable-rich regions, such as Xinjiang, Gansu and Qinghai. To achieve the cost-efficient pathways modeled here, curtailment rates fall to 3-6%.
To achieve this level of integration, energy storage and transmission infrastructure will be necessary to shift renewable generation towards when and where it is needed.
Battery and grid capacity would need to rise by 6% and 5% per year from current levels out to 2035, respectively, in order to better integrate renewables into the grid.
Boosting wind and solar generation share
In order to explore the implications of uncertainty on China’s power system in 2030, the modelling includes three core scenarios (groups A-C).
Within these core groups, the modelling looks at the impact of further uncertainties on system outcomes by 2035, labelled A1, A2 and so on. This results in a “decision-tree” structure that outlines a range of possible futures.
The lines on the chart below show the share of China’s electricity that would be generated by wind and solar by 2030 and 2035, under each of these different futures. The coloured columns show the share of electricity generated by wind (red), solar (yellow), hydro (blue), nuclear (pink) and biomass (grey) in one specific scenario, namely, the “reference” case for renewable costs with moderate demand growth (A1).
The bands in the right-hand margin indicate the ranges of the 2035 results under all of the future scenarios, depending on variables such as the cost of renewables or batteries (cases two to four) and a larger rise in demand (case five).
At a minimum, for each of the 2C-compatible scenarios, wind and solar would take up around 50% of total generation by 2035.
Another consistent result across all scenarios is the need for more transmission capacity to shift generation from renewable-rich regions to those with high demand for power. By 2030, at least 225GW of new inter-provincial transmission capacity would be required, further enhancing electricity trading and grid reliability.
China is already expanding its “ultra-high-voltage” (UHV) transmission network at breakneck speed. As of the end of 2024, there were 42 UHV projects in operation, with a combined capacity exceeding 300GW.
Another assumption in the modelling is that electricity can flow freely and efficiently across regions, up to the transmission capacity limits. But, in reality, institutional and regulatory barriers complicate regional electricity trading.
China plans to establish a national unified power market by 2029. As such, deregulating the power sector is seen as an essential measure to enhance the power system’s operational efficiency and facilitate renewable energy integration.
Looking ahead to the NDC and beyond
Many experts have weighed in on China’s NDC target-setting, largely focusing on economy-wide emissions targets and non-CO2 greenhouse gases.
While these are indeed important elements of China’s next international climate pledge, our study seeks to identify robust power-sector targets that could support the country’s overall ambition and provide credible signals to energy planners.
Due to the rapidly evolving economic and geopolitical situation, there are good reasons to expect that China’s topline emissions number may be underwhelming.
On the other hand, there is an opportunity to emphasise and expand ambition within the power sector through additional sectoral targets. This would put a focus on quantifiable metrics that can guide investments and planning by state-owned enterprises and local governments.
While China has previously set a target for the absolute capacity of wind and solar, a goal for the share of electricity generation from these technologies, or for clean energy more broadly, would set a narrower range for future emissions from the power sector.
Given current uncertainties around the pace of power demand growth, for example, a target for clean energy share might provide greater confidence to policymakers than a capacity target alone.
Regardless of what targets are set, achieving the growth of clean energy modelled in our study would support China’s long-term climate commitments and demonstrate the nation’s intent to be a clean-energy powerhouse.
The post Guest post: What an ‘ambitious’ 2035 electricity target looks like for China appeared first on Carbon Brief.
Guest post: What an ‘ambitious’ 2035 electricity target looks like for China
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Lena Luig is the head of the International Agricultural Policy Division at the Heinrich Böll Foundation, a member of the Global Alliance for the Future of Food. Anna Lappé is the Executive Director of the Global Alliance for the Future of Food.
As toxic clouds loom over Tehran and Beirut from the US and Israel’s bombardment of oil depots and civilian infrastructure in the region’s ongoing war, the world is once again witnessing the not-so-subtle connections between conflict, hunger, food insecurity and the vulnerability of global food systems dependent on fossil fuels, dominated by a few powerful countries and corporations.
The conflict in Iran is having a huge impact on the world’s fertilizer supply. The Strait of Hormuz is a critical trade route in the region for nearly half of the global supply of urea, the main synthetic fertilizer derived from natural gas through the conversion of ammonia.
With the Strait impacted by Iran’s blockades, prices of urea have shot up by 35% since the war started, just as planting season starts in many parts of the world, putting millions of farmers and consumers at risk of increasing production costs and food price spikes, resulting in food insecurity, particularly for low-income households. The World Food Programme has projected that an extra 45 million people would be pushed into acute hunger because of rises in food, oil and shipping costs, if the war continues until June.
Pesticides and synthetic fertilizer leave system fragile
On the face of it, this looks like a supply chain issue, but at the core of this crisis lies a truth about many of our food systems around the world: the instability and injustice in the very design of systems so reliant on these fossil fuel inputs for our food.
At the Global Alliance, a strategic alliance of philanthropic foundations working to transform food systems, we have been documenting the fossil fuel-food nexus, raising alarm about the fragility of a system propped up by fossil fuels, with 15% of annual fossil fuel use going into food systems, in part because of high-cost, fossil fuel-based inputs like pesticides and synthetic fertilizer. The Heinrich Böll Foundation has also been flagging this threat consistently, most recently in the Pesticide Atlas and Soil Atlas compendia.
We’ve seen this before: Russia’s invasion of Ukraine in 2022 sparked global disruptions in fertilizer supply and food price volatility. As the conflict worsened, fertilizer prices spiked – as much from input companies capitalizing on the crisis for speculation as from real cost increases from production and transport – triggering a food price crisis around the world.
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Since then, fertilizer industry profit margins have continued to soar. In 2022, the largest nine fertilizer producers increased their profit margins by more than 35% compared to the year before—when fertilizer prices were already high. As Lena Bassermann and Dr. Gideon Tups underscore in the Heinrich Böll Foundation’s Soil Atlas, the global dependencies of nitrogen fertilizer impacted economies around the world, especially state budgets in already indebted and import-dependent economies, as well as farmers across Africa.
Learning lessons from the war in Ukraine, many countries invested heavily in renewable energy and/or increased domestic oil production as a way to decrease dependency on foreign fossil fuels. But few took the same approach to reimagining domestic food systems and their food sovereignty.
Agroecology as an alternative
There is another way. Governments can adopt policy frameworks to encourage reductions in synthetic fertilizer and pesticide use, especially in regions that currently massively overuse nitrogen fertilizer. At the African Union fertilizer and Soil Health Summit in 2024, African leaders at least agreed that organic fertilizers should be subsidized as well, not only mineral fertilizers, but we can go farther in actively promoting agricultural pathways that reduce fossil fuel dependency.
In 2024, the Global Alliance organized dozens of philanthropies to call for a tenfold increase in investments to help farmers transition from fossil fuel dependency towards agroecological approaches that prioritize livelihoods, health, climate, and biodiversity.
In our research, we detail the huge opportunity to repurpose harmful subsidies currently supporting inputs like synthetic fertilizer and pesticides towards locally-sourced bio-inputs and biofertilizer production. We know this works: There are powerful stories of hope and change from those who have made this transition, despite only receiving a fraction of the financing that industrial agriculture receives, with evidence of benefits from stable incomes and livelihoods to better health and climate outcomes.
New summit in Colombia seeks to revive stalled UN talks on fossil fuel transition
Inspiring examples abound: G-BIACK in Kenya is training farmers how to produce their own high-quality compost; start-ups like the Evola Company in Cambodia are producing both nutrient-rich organic fertilizer and protein-rich animal feed with black soldier fly farming; Sabon Sake in Ghana is enriching sugarcane bagasse – usually organic waste – with microbial agents and earthworms to turn it into a rich vermicompost.
These efforts, grounded in ecosystems and tapping nature for soil fertility and to manage pest pressures, are just some of the countless examples around the world, tapping the skill and knowledge of millions of farmers. On a national and global policy level, the Agroecology Coalition, with 480+ members, including governments, civil society organizations, academic institutions, and philanthropic foundations, is supporting a transition toward agroecology, working with natural systems to produce abundant food, boost biodiversity, and foster community well-being.
Fertilizer industry spins “clean” products
We must also inoculate ourselves from the fertilizer industry’s public relations spin, which includes promoting the promise that their products can be produced without heavy reliance on fossil fuels. Despite experts debunking the viability of what the industry has dubbed “green hydrogen” or “green or clean ammonia”, the sector still promotes this narrative, arguing that these are produced with resource-intensive renewable energy or Carbon Capture and Storage (CCS), a costly and unreliable technology for reducing emissions.
As we mourn this conflict’s senseless destruction and death, including hundreds of children, we also recognize that peace cannot mean a return to business-as-usual. We need to upend the systems that allow the richest and most powerful to have dominion over so much.
This includes fighting for a food system that is based on genuine sovereignty and justice, free from dependency on fossil fuels, one that honors natural systems and puts power into the hands of communities and food producers themselves.
The post Middle East war is another wake-up call for fossil fuel-reliant food systems appeared first on Climate Home News.
Middle East war is another wake-up call for fossil fuel-reliant food systems
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