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Carbon Brief handpicks and explains the most important climate and energy stories from China over the past fortnight. Subscribe for free here.
Key developments
US-China climate deal paves way for Xi-Biden meeting and COP28
SUNNYLANDS STATEMENT: Following talks between US and Chinese climate envoys John Kerry and Xie Zhenhua, the two nations released statements “to jointly tackle global warming by ramping up…renewable energy with the goal of displacing fossil fuels”, the New York Times reported. Both countries pledged to “pursue efforts to triple renewable energy capacity globally by 2030”, a key goal in COP28 negotiations, it added. The statement backed the “success of COP28”, which Reuters said was “crucial” to coming to a consensus in Dubai. However, while the statement supported a broad political outcome from the “global stocktake” at COP28, there was no agreed language on fossil fuel phaseout, noted Carbon Brief’s Simon Evans on Twitter. The BBC quoted Bernice Lee, distinguished fellow at Chatham House, as saying that it had likely “proven to be too difficult to find the form of language that works for both” on fossil fuels. Similarly, while there were commitments in the statement to hold policy dialogues on energy efficiency, doubling the rate of efficiency improvements by 2030 was not mentioned.
EMISSIONS PEAKING: The two countries “expect meaningful cuts to be made to power sector emissions before 2030”, Bloomberg reported, quoting Joanna Lewis, an expert in international policy at Georgetown University, as saying this implies “a reduction in emissions from China’s coal plants very soon”. (This aligns with recent analysis by the Centre for Research on Energy and Clean Air (CREA) for Carbon Brief, see below.) However, on Twitter, senior Politico climate correspondent Karl Mathiesen spotted a slight difference between the readouts – in the US version, power sector emissions cuts are tied to “this critical decade of the 2020s”, whereas in the Chinese readout, reductions are not linked to any date. Reductions will likely be driven in part by carbon capture, utilisation and storage (CCUS), with Chinese energy outlet BJX News reporting that “the two countries aim to promote at least five large-scale [CCUS] cooperation projects in industry and energy…by 2030 in each country”.
‘RESTARTING’ COOPERATION: Kerry and Xie’s meeting was followed by a meeting between presidents Joe Biden and Xi Jinping on the sidelines of the Asia-Pacific Economic Cooperation (APEC) summit, at which the two leaders discussed maintaining “high-level communications” and cooperating “on trade, agriculture, climate change and artificial intelligence”, Reuters said. Le Monde reported that the US and China will restart bilateral energy dialogues and establish working groups to cover key areas of concern. US treasury secretary Janet Yellen and Chinese vice premier He Lifeng also agreed to improve climate change and global debt relief cooperation in earlier talks, the South China Morning Post reported.
‘Structural decline’ in carbon emissions expected from 2024
2024 DECLINE: In analysis for Carbon Brief, Lauri Myllyvirta, lead analyst at CREA, estimated that China’s carbon emissions “could peak this year before falling into a structural decline” due to “a historic expansion of the country’s low-carbon energy sources”, reported the Guardian. Covering the analysis, Chinese energy news site IN-EN.com said rapid growth in power generation from low-carbon energy sources, a consequent decline in coal’s share of energy consumption and China’s real estate sector downturn “lays the groundwork” for declining emissions. Myllyvirta noted that solar energy saw the “most significant increases”, with 210 gigawatts (GW) of solar power set to be installed this year, the news platform Guancha reported. These record additions are “all but guaranteed to push China’s fossil-fuel electricity generation and CO2 emissions into decline in 2024”, Business Green said in its coverage. Myllyvirta spoke on state broadcaster CGTN to discuss the findings, which were also reported by CNN, Reuters, Bloomberg, Global Times and South China Morning Post.
COAL SPOILER? In a parallel piece in Foreign Policy, Myllyvirta and his co-author Byford Tsang, senior policy advisor at climate thinktank E3G, wrote under the headline: “China pledged to ‘strictly control’ coal. The opposite happened.” Yet Myllyvirta also noted in his analysis for Carbon Brief that a surge in China’s investment in manufacturing capacity for low-carbon technologies is creating an increasingly important interest group in the country, which could affect its approach to domestic and international climate politics. This is “setting the scene for a showdown between the country’s traditional [coal] and newly emerging interest groups”, Agence France-Presse noted in its coverage.
OVERSEAS FREEZE: Meanwhile, China’s two development banks did not make any new energy sector loan commitments in 2022 for “the second year in a row”, according to a new policy brief by the Boston University Global Development Policy Center. In an article for the China Global South Project, co-author Cecilia Springer wrote that this was driven by “ongoing domestic economic woes” and “heightened debt distress in borrowing nations”.
China compensates coal power plants for spare capacity
CAPACITY COMPENSATION: China will give “guaranteed payments” to coal power producers under a new coal capacity compensation mechanism effective 1 January 2024, the country’s top economic planner, the National Development and Reform Commission (NDRC), announced in a notice released on Friday, Reuters reported. It added that the “widely-anticipated” move aims to ensure the financial viability of “seldom-utilised, backup” coal power and counter challenges with the variability of renewable energy. The mechanism will allow coal power plants to recover their fixed costs through a capacity tariff set at either 30% or 50% of 330 yuan per kilowatt per year through 2025, depending on their location, reported energy news website BJX News. From 2026, provinces will raise the tariff to “no less than 50%” of the 330 yuan benchmark. A representative from the state-owned China Energy Investment Group wrote in power sector outlet Dianlian News that the policy will adjust the role of coal-fired power units in the power system from “being primarily quantity providers to becoming capacity providers”.
REFORM LAG? Economic news outlet Jiemian quoted the NDRC as saying the policy will have a “positive impact on the electricity costs for end-users in the short and long term”. However, the mechanism has major implications for market reforms, Anders Hove, a senior research fellow at Oxford Institute for Energy Studies told Carbon Brief. “The segregation of long-term contracts, spot markets and ancillary services markets already hinders the ability of market prices to convey investment signals,” he said. While the initial policy on a national electricity market design had suggested the possibility of a market-based capacity mechanism, China ultimately chose a flat capacity payment made only to coal, he added. David Fishman, a senior manager at energy consultancy the Lantau Group, posted on Twitter that it “could distort market signals, which would ordinarily force expensive or inefficient generators out of the market”. Still, Reuters quoted Fishman saying: “It adds a lot of flexibility to the grid system and should allow more intermittent generation (like wind or solar) to enter the generation mix without compromising grid stability or energy security.”
Spotlight
What does China’s new methane plan mean for its climate goals?
In November, China published its long-awaited plan to reduce methane emissions. Carbon Brief explores how effective the plan may be for the world’s largest emitter of methane.
What does the plan say?
The plan described China’s approach as to “control methane emissions in a scientific, rational and orderly manner”, with a specific focus on the energy, agriculture and waste sectors.
It included 20 “key tasks” in emissions monitoring, technological innovation, development of policy frameworks, global cooperation and other areas.
During the 15th five year plan period (2026-2030), monitoring and accounting of methane emissions will be “significantly enhanced”, it added. Methane utilisation, emissions control technologies and policy frameworks will be “effectively improved”.
Other notable pledges included that by 2030 oil and gas producers will “strive” to “gradually” eliminate flaring, and utilisation of coal mine methane will reach 6bn cubic metres annually.
(This “corresponds to about 10%” of the coal mining sector’s total methane emissions, said Lauri Myllyvirta, lead analyst at Centre for Research on Energy and Clean Air (CREA).)
Where do methane emissions come from in China?
China is responsible for 10% of all human-caused methane emissions, with two estimates in 2021 placing its annual output at 58m tonnes (Mt) and 65Mt respectively, equivalent to 1.7-1.9bn tonnes of carbon dioxide (CO2) equivalent.
Around 40% of China’s methane emissions are gas that escapes during the mining of coal, according to the Innovative Green Development Program (iGDP), a Chinese thinktank. Another 42% is from agriculture, including livestock and rice cultivation, it said.
Coal mine methane emissions are particularly challenging to detect, according to the International Energy Agency (IEA), as they are “diffuse”. It added that abandoned mines, which could contribute “almost one fifth” of global methane emissions, cannot be included in calculations as “reliable data” is often unavailable.
Climate Home reported, however, that according to Global Energy Monitor (GEM) research, “the real figure for coal mine methane is almost double what the government claims”. Shanxi province could emit as much methane from its coal mines as the rest of the world combined, according to GEM.
Why is tackling methane important?
Methane is a potent greenhouse gas, with around 30 times the warming power of carbon dioxide 100 years after it is emitted. It is responsible for around 30% of the rise in global temperatures since the industrial revolution.
Cutting methane by 30% by 2030 – the target of the global methane pledge – is the “fastest way to reduce near-term warming” and keep 1.5C “within reach”, according to a US and EU factsheet.
Will China’s plan be effective in curbing emissions?
The Environmental Defense Fund (EDF) wrote on WeChat that it believed “in the long term”, the plan will provide “a clear guiding framework” for methane reduction efforts.
It pointed to the role the plan could play in establishing a monitoring, reporting and verification (MRV) system that could underpin a carbon pricing methodology for methane.
Dr Chen Meian, program director and senior analyst at iGDP, tells Carbon Brief that some of the “sector-specific targets mentioned in the methane plan can help China to reduce methane emissions” in coalbed methane and other areas.
However, she added, it is “difficult” to set hard targets for cutting emissions by specific amounts, due to challenges in data monitoring, “[which is why] China also listed the improvement of methane emissions MRV” as a key task.
Others are less convinced. The plan is “too ambiguous”, “descriptive” and lacking in quantitative targets, Refinitiv lead carbon analyst Yan Qin told Reuters.
Ember’s methane analyst Anatoli Smirnov told Climate Home that the “only real solution to reduce methane emissions is to close coal mines”. The outlet also quoted CREA’s Myllyvirta saying there is a lack of “political will and buy-in” to curb methane in China.
“I think China is trying to be realistic in target-setting [for its] coal sector emissions,” Chen tells Carbon Brief. She adds that China “used to set ambitious targets” for coalbed methane capture and utilisation in its five-year plans, but that it repeatedly missed them.
She added that it would be important for local governments to “set their own methane plans…tailored to local conditions” and to improve data monitoring.
What does this mean for global cooperation on methane?
A week after the plan was released, the US and Chinese climate envoys John Kerry and Xie Zhenhua issued a declaration on enhancing climate cooperation, known as the “Sunnylands statement”.
It included commitments to establish a working group that will look at several areas of cooperation, including methane emissions, and to create another working group to focus on “building on” their current national methane plans.
In addition, they commit to include “actions/targets” on methane reduction in their next climate pledges under the Paris Agreement, which will also cover other non-CO2 greenhouse gases. They will host, with the UAE, a summit on non-CO2 gases at COP28.
Without the plan’s public release, Li Shuo, director of the China climate hub at the Asia Society Policy Institute told Bloomberg, there “certainly wouldn’t have been further deals”.
However, differences in the sources of the US and China’s methane emissions could hamper cooperation. Dr Teng Fei, deputy director of the Institute of Energy, Environment and Economy at Tsinghua University, told China Dialogue that the main source of EU and US methane emissions is oil and gas, compared to coal mining for China.
Tackling coal mining methane emissions is harder and more costly than oil and gas. This could be why China has not signed up to the global methane pledge, which may be easier for the EU and US to meet, Teng added.
Watch, read, listen
COAL ADDICTION: Michael Davidson, assistant professor at the University of California, San Diego, explained in Foreign Affairs how “the need for energy security, the structure of China’s climate goals and…local interests” keeps China committed to coal, even though it “makes little financial sense”.
SOLAR DEBATE: In a video interview, Wall Street Journal reporter Phred Dvorak outlined how different countries are responding to dropping prices of Chinese solar panels in an effort to protect their own manufacturers.
EV RACE: Bloomberg published a podcast looking into how China became the dominant player in the electric vehicle industry, and what this could mean for the global economy.
GREEN BRI: A symposium summarised in Environmental Politics examined how environmental governance is practised in China’s belt and road initiative (BRI), with focus areas including China’s political mechanisms to “green” the BRI and the dynamics influencing the effectiveness of BRI renewable energy projects.
SUPPLY CHAIN RISKS? The Royal United Services Institute assessed the threat of China’s “near monopoly” of rare earth production and manufacturing of “net zero technologies”, finding that risks are “currently limited by low levels of manufacturing of these technologies in the UK”.
New science
Weather and Climate Extremes
A new study estimated that “compound” extreme weather events under a high-emissions scenario may become “10 times and 14 times more likely” through the mid-21st century and end of the century respectively. The study authors used the compound event of heavy precipitation and heatwaves in China in 2020 to identify the dynamic and thermodynamic factors contributing to the such events. They defined spatially compounding events as those occurring “when multiple connected locations are concurrently affected by the same or different hazards, thus inducing an aggregated impact”.
Global Change Biology
New research investigating recent trends in blooms of microalgal “red tides” and macroalgae in China found that microalgal blooms have been decreasing in frequency since 2003, while macroalgal blooms have generally been rising since 1999. It attributed the growth of macroalgae around China over the past 30 years to “eutrophication, climate change and grazing stress”, which it said indicated “a fundamental change in coastal systems in the region”.
China Briefing is compiled by Anika Patel and edited by Wanyuan Song and Simon Evans. Please send tips and feedback to china@carbonbrief.org.
The post China Briefing 16 November: Sunnylands statement; China methane plan; Coal capacity payments appeared first on Carbon Brief.
China Briefing 16 November: Sunnylands statement; China methane plan; Coal capacity payments
Climate Change
Every country needs a model to help optimise its energy transition
Claver Gatete is Executive Secretary of the UN Economic Commission for Africa. Jason Veysey is Energy Modeling Program Director and Senior Scientist at the Stockholm Environment Institute. Lisa Sachs is Director of the Columbia Center on Sustainable Investment at Columbia University.
The case for global energy transition has rarely been clearer. The closure of the Strait of Hormuz earlier this year exposed the cost of unplanned, fossil-dependent systems, while the falling cost of renewables, the rising penetration of electric vehicles, and the growing value of demand flexibility have made the direction of travel obvious. The benefits of a clean, secure, integrated system are no longer in dispute. What remains unclear is how to build it.
Countries around the world have called for faster renewable energy deployment and alternative energy arrangements. A secure, affordable, resilient, decarbonised system requires specific investments in specific places in a specific sequence, optimised across sectors and borders. But very few governments have the analytical foundation to translate those imperatives into investment.
The two instruments that are supposed to determine investment priorities for decarbonisation – Nationally Determined Contributions (NDCs) and country platforms – cannot answer the most basic question facing any country undertaking an energy transition: what should the energy system look like?
To close this gap, every country needs a bankable, economy-wide optimisation model for its energy system. A model is not a plan, but it can help answer the critical question of what the future energy system should look like. It shows how optimal scenarios vary as assumptions and policies are adjusted, calculates investment requirements and sequencing, and quantifies how system costs are affected by assumptions, policies, and exogenous variables like trade policy and financing terms.
Tool for efficient investment
Optimisation is a simplified way of simulating an energy system, but it can be an extremely powerful tool for moving energy planning from reactive (how do we manage the disparate actions in the energy system?) to intentional (what energy system underpins our national objectives?). A model can show how optimal scenarios vary as assumptions and policies are adjusted, and how investment requirements are quantified and sequenced.
Optimisation models can treat the energy system and the sectors it serves as an integrated whole, optimising across sectors and projects in ways that can be mutually reinforcing. If considered independently, growth in industrial demand, transport electrification, and digital infrastructure can add stress to the energy system. But an optimised plan can arrange these and other changes in an efficient, synergistic way.
Two to tango: How governments can unlock private investment for national climate goals
New load can be added where low-cost power is available; industrial customers can ensure the viability of investments in energy supply; electric vehicle charging policy can smooth load curves and reduce costs for all consumers.
Additionally, optimisation modeling can also change the financeability of investments. Taken alone, each project faces uncertainty about the rest of the system, which raises the cost of capital and causes projects to stall or unwind after contracts are signed. A coherent, optimised plan makes visible the coordination that private capital would otherwise have to bet on: identified offtake, sequenced and committed transmission, contracted power supply, and so on.
What COP31 and COP32 should do
The upcoming COPs in Turkey and Ethiopia can shift the center of gravity of international climate cooperation from fragmented commitments to planning. Three moves are urgently needed.
First, optimised, economy-wide, long-term energy system planning must be the foundation on which any meaningful NDC, country platform, or finance commitment rests. NDCs are typically drafted by environment or single-line ministries, with limited cross-sectoral input from ministries of energy, finance, and planning. They contain targets, derived from sectoral strategies or national commitments, not from an analytically grounded picture of what the energy system should look like and what investments would make it work. Country platforms are generally a portfolio of investments assembled from existing project pipelines, rather than derived from a system-level analysis of what an optimised, decarbonised energy system would require.
Second, recognise regions as a key planning unit. Modern integrated energy systems are inherently regional. Renewable endowments are unevenly distributed; balancing variable supply across borders lowers aggregate cost, reduces redundant backup capacity, and unlocks economies of scale no individual nation can achieve. Many energy investments in Southeast Asia, East Africa, Southern Africa and Central Asia may only be financeable in a regional context. Assessing domestic infrastructure without regional optimisation perpetuates the perception that decarbonisation is more expensive than it is.
COP31 leaders unveil global targets, with spotlight on electrification
Third, finance the planning capacity. A coordinated commitment by multilateral development banks, bilateral donors, and philanthropic partners to help every region and its constituent countries develop and maintain their own modelling capability, with open-source tools and regional analytical hubs, would close the most consequential gap in the current architecture. The cost is small relative to current spending on country platforms, failed project preparation, and misallocated infrastructure investment.
This includes supporting regional institutions such as the ASEAN Centre for Energy, the African Energy Commission, regional power pools, and the Latin American and Caribbean Energy Organization to determine what optimised regional systems require. Country-by-country pledging, repeated at every COP, will not deliver what meaningfully integrated systems can.
The 2026 energy crisis made the cost of unplanned, fossil-dependent systems newly visible. That window of clarity will close. The international community should seize the moment to build the planning foundation that has been missing for thirty years, rather than commissioning another round of NDCs or pledges, striving for outcomes neither was designed to deliver.
The post Every country needs a model to help optimise its energy transition appeared first on Climate Home News.
Every country needs a model to help optimise its energy transition
Climate Change
Explainer: How the ‘super El Niño’ will reshape the world’s weather
The world is currently experiencing what is expected to become the strongest El Niño on record – dubbed a “super El Niño” by many.
El Niño is the warm phase of a recurring climate pattern in the tropical Pacific that releases heat from the ocean into the atmosphere.
This temporarily raises global temperatures and reshapes rainfall and extreme weather around the world – impacting the lives of billions of people.
The current El Niño event began in June and is expected to last into 2027.
El Niño is part of a wider climate pattern called the El Niño-Southern Oscillation (ENSO) cycle.
The ENSO cycle also has a cool phase, known as La Niña, as well as a “neutral” phase. El Niño and La Niña events typically last between nine and 12 months, but can go on longer.
Below, Carbon Brief explains how the ENSO cycle works, its impacts on extreme weather and global temperatures and why this El Niño event is projected to be the most intense since records began.
The post Explainer: How the ‘super El Niño’ will reshape the world’s weather appeared first on Carbon Brief.
https://interactive.carbonbrief.org/el-nino-explainer/index.html
Climate Change
Analysis: The two largest reservoirs in the US have hit record-low levels
The second-largest reservoir in the US reached a record-low water height on Saturday – just days after the country’s largest reservoir broke its own record.
Both Lake Mead and Lake Powell are located on the Colorado River.
They provide water for populations across seven US states in the south-western US, with around 40 million people getting some or all of their municipal water from the Colorado River.
The river also provides water for around 5.5m acres (22,258 square kilometres) of farmland across Colorado, Arizona, California and the other states in the river basin.
Experts tell Carbon Brief that climate change, population growth and over-consumption are all contributing to the current record-low levels of the reservoirs.
Record lows
At full capacity, Lakes Mead and Powell can hold a combined 68 cubic kilometres of water – enough to supply all household consumption in the contiguous US for nearly 1.5 years. However, the water level in both reservoirs has been declining for decades.
The chart below shows the water level of Lake Mead, in metres above mean sea level. The reservoir, which began to fill in 1935 following the construction of the Hoover Dam, has a “full pool” maximum capacity of 347.60 metres. The water level in Lake Mead reached a record low of 317.11 metres on 7 August.

The following chart shows the water level of Lake Powell, in metres above mean sea level. Lake Powell’s full-pool level is 1,127.76 metres.
While the reservoir reached its maximum capacity several times in the 1980s, it has not done so since. On 15 August, the water level in Lake Powell was recorded at a new record-low of 1,072.87 metres.

Both reservoirs have continued to decline in the days since breaking their respective records. The downward trend will largely continue in both lakes until next spring, when the snowpack in the mountains of the Upper Colorado River Basin begins to melt, says Dr Jack Schmidt, a senior research scientist at Utah State University’s Center for Colorado River Studies. He tells Carbon Brief:
“The big dilemma of the moment is that we’re only in the middle of August, and we have no assurance of what the coming winter will be. The only thing we can be sure of is that we will be depleting overall total basin reservoir storage from now until, roughly, early April.”
Compounding factors
The record lows across the two reservoirs are the result of several compounding factors, experts tell Carbon Brief.
Since the turn of the 20th century, the amount of water flowing along the Upper Colorado River has declined by about 20%. Research suggests that half of this decline can be attributed to human-induced climate change.
Most of the river’s streamflow comes from the snowpack of the Upper Colorado River Basin, which stretches across five western US states but is primarily located in Colorado and Utah.
This region has been gripped by a historic “megadrought” for more than a quarter of a century. Nearly half of the megadrought’s intensity over 2000-18 is attributable to climate change, according to a 2020 study.
At the same time, the increasing population in the US south-west has put added pressure on the Colorado River’s water supply. The number of people obtaining some or all of their water from the Colorado system has grown by 15 million (around 60%) since 1992.
Schmidt tells Carbon Brief:
“There’s an ultimate cause of the present water crisis, and there’s a proximate cause. The ultimate cause is a warming climate, a warming planet and a pretty clear correlation between warming conditions and decreased runoff in the Colorado River Basin.
“The proximate cause is that in this messy democratic republic of ours, big policy decisions that match the variability of the climate occur painfully slowly – with intense political negotiations – and only incrementally.”
On 31 July, the US Bureau of Reclamation, which manages water resources in the western US, released an environmental impact statement on its proposed post-2026 strategy for managing Lakes Powell and Mead. The strategy itself has not been released yet.
Schmidt notes that the statement does appear to give the Bureau flexibility to “respond to crisis” by reducing the delivery of water to several states. However, he adds:
“They acknowledge it won’t work if we just stay critically dry, and of course every climate model for the 21st century, especially with a continually warming planet, says that that’s exactly what’s going to happen.”
The post Analysis: The two largest reservoirs in the US have hit record-low levels appeared first on Carbon Brief.
Analysis: The two largest reservoirs in the US have hit record-low levels
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