Welcome to Carbon Brief’s DeBriefed.
An essential guide to the week’s key developments relating to climate change.
This week
Renewables overtake coal
‘HISTORIC FIRST’: Renewables have overtaken coal to become the world’s leading source of electricity for the first six months of this year in a “historic first”, BBC News said. The analysis, from the thinktank Ember, found the world generated “almost a third” more solar power in the first half of the year, compared with the same period in 2024, while wind power grew by “just over 7%,” reported the Guardian.
HEAVY LIFTING: According to the report, China and India were “largely responsible for the surge in renewables”, while the US and Europe “relied more heavily on fossil fuels,” the Guardian wrote. China built more renewables than every other country combined in the first half of this year, the newspaper added.
CONTINENTAL SHIFTS: A second report from the International Energy Agency (IEA) predicted a “surge” in global wind and solar capacity by 2030, but shaved 5% off its previous forecast, the Financial Times said. The IEA revealed that India is set to become the second-largest growth market for renewables after China, “with capacity expected to increase 2.5 times by 2030”, Down to Earth reported. The IEA also upped its forecast for renewables in the Middle East and north Africa by 23%, “helped by Saudi Arabia rolling out wind turbines and solar panels”, but halved the outlook for the US, the FT noted.
Around the world
- EV BOOM: Sales of electric and hybrid cars made up “more than half” of all new car registrations in the UK last month, a new record, according to data from the Society of Motor Manufacturers, reported BBC News.
- BANKING COLLAPSE: A global banking alliance launched by the UN to get banks to slash the carbon footprint of their loans and investments and help drive the transition to a net-zero economy by 2050 has collapsed after four years, Agence France-Press reported.
- CUTS, CUTS, CUTS: The Trump administration plans to cut nearly $24bn in funding for more than 600 climate projects across the US, according to documents reviewed by the Wall Street Journal.
- PEOPLE POWER: A farmer, a prison guard and a teacher were among those from the Dutch-Caribbean island Bonaire who appeared at the Hague on Tuesday to “accuse the Netherlands of not doing enough to protect them from the effects of climate change”, Politico reported.
400,000
The number of annual service days logged by the US National Guard responding to hurricanes, wildfires and other natural disasters over the past decade, according to a Pentagon report to Congress, Inside Climate News reported.
Latest climate research
- Politicians in the UK “overwhelmingly overestimate the time period humanity has left to bend the temperature curve”, according to a survey of 100 MPs | Nature Communications Earth and Environment
- Fire-driven degradation of the Amazon last year released nearly 800m tonnes of CO2 equivalent, surpassing emissions from deforestation and marking the “worst Amazon forest disturbance in over two decades” | Biogeosciences
- Some 43% of the 200 most damaging wildfires recorded over 1980-2023 occurred in the last decade | Science
(For more, see Carbon Brief’s in-depth daily summaries of the top climate news stories on Monday, Tuesday, Wednesday, Thursday and Friday.)
Captured

The UK’s Climate Change Act, landmark legislation that guides the nation’s response to climate change, is increasingly coming under attack from anti-net-zero right-leaning politicians. In a factcheck published this week, Carbon Brief explained how the UK’s Climate Change Act was among the first comprehensive national climate laws in the world and the first to include legally binding emissions targets. In total, 69 countries have now passed “framework” climate laws similar to the UK’s Climate Change Act, with laws in New Zealand, Canada and Nigeria among those explicitly based on the UK model. This is up from just four when the act was legislated in 2008. Of these, 14 are explicitly titled the “Climate Change Act”.
Spotlight
Fukushima’s solar future
This week, Carbon Brief examines how Fukushima helped to recover from nuclear disaster by building solar farms on contaminated farmland.
On 11 March 2011, an earthquake off the pacific coast of Japan caused 15m-tall waves to crash into the eastern region of Tōhoku, killing 19,500 people and injuring a further 6,000.
In the aftermath, flooding at the Fukushima Daichi nuclear power plant caused cooling systems to fail, leaching radioactive contaminants into the soil and leading to a major nuclear incident.
Some 1,200km2 around the site was restricted and up to 100,000 people were evacuated – in some cases forever.
In the years following, Japan entered a fraught debate about nuclear energy.
In 2010, nuclear power provided 25% of Japan’s electricity, but, in the years following the disaster, its 54 nuclear reactors were taken offline.
Successive governments have fought over reintroducing nuclear power. Today, some 14 reactors are back online, 27 have been permanently closed and another 19 remain suspended. (Japan’s newly-elected prime minister Sanae Takaichi has promised to make nuclear central to her energy strategy.)
Against this backdrop, Fukushima – a prefecture home to 1.8 million people – has emerged as a surprise leader in the renewables race.
In 2014, the Fukushima Renewable Energy Institute (FREA) opened with the twin goals of promoting research and development into renewable energy, while “making a contribution to industrial clusters and reconstruction”.
That same year, the prefecture declared a target of 100% renewable power by 2040.
Contaminated land
“A lot of these communities, I know, were looking for ways to revitalise their economy,” said Dr Jennifer Sklarew, assistant professor of energy and sustainability at George Mason University and author of “Building Resilient Energy Systems: Lessons from Japan”.
Once evacuation orders were lifted, however, residents in many parts of Fukushima were faced with a dilemma, explained Skarlew:
“Since that area was largely agricultural, and the agriculture was facing challenges due to stigma, and also due to the soil being removed [as part of the decontamination efforts], they had to find something else.”
One solution came in the form of rent, paid to farmers by companies, to use their land as solar farms.
Michiyo Miyamoto, energy finance specialist at the Institute for Energy Economics and Financial Analysis, told Carbon Brief:
“The [Fukushima] prefecture mapped suitable sites early and conducted systematic consultations with residents and agricultural groups before projects were proposed. This upfront process reduced land-use conflicts, shortened permitting timelines and gave developers clarity.”
As a result, large-scale solar capacity in Fukushima increased to more than 1,300 megawatts (MW) from 2012 to 2023, according to Miyamoto. Moreover, installed renewable capacity now exceeds local demand, meaning the region can run entirely on clean power when conditions are favourable, Miyamoto said.
Today, aerial pictures of Fukushima reveal how solar panels have proliferated on farmland that was contaminated in the nuclear disaster.

Charging on
Last year, 60% of Fukushima’s electricity was met by renewables, up from 22% in 2011. (The country as a whole still lags behind at 27%.)
And that is set to grow after Japan’s largest onshore windfarm started operations earlier this year in Abukuma, Fukushima, with a capacity of 147MW.
The growth of solar and wind means that Fukushima is already “ahead of schedule” for its 2040 target of 100% renewable power, said Miyamoto:
“The result is a credible pathway from recovery to leadership, with policy, infrastructure and targets working in concert.”
Watch, read, listen
OVERSHOOT: The Strategic Climate Risks Initiative, in partnership with Planet B Productions, has released a four-part podcast series exploring what will happen if global warming exceeds 1.5C.
DRONE WARFARE: On Substack, veteran climate campaigner and author Bill McKibben considered the resilience of solar power amid modern warfare.
CLIMATE AND EMPIRE: For Black history month, the Energy Revolution podcast looked at how “race and the legacies of empire continue to impact the energy transition”.
Coming up
- 12 October: presidential elections, Cameroon
- 13-14 October: Pre-COP, Brasilia, Brazil
- 13-18 October: World Bank Group/IMF annual meetings, Washington DC
- 14-17 October: 2nd extraordinary session of the Marine Environment Protection Committee at the International Maritime Organisation, London
- 15-16 October: Circle of Finance Ministers report
Pick of the jobs
- Buckinghamshire Council, principal climate change officer | Salary: £49,354-£51,759. Location: Aylesbury, Buckinghamshire
- Sustainable NI, sustainable business lead | Salary: £60,000. Location: Belfast, Northern Ireland
- Dialogue Earth, South Asia managing editor | Salary: £1,875 per month. Location: South Asia
DeBriefed is edited by Daisy Dunne. Please send any tips or feedback to debriefed@carbonbrief.org.
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The post DeBriefed 10 October 2025: Renewables power past coal; Legacy of UK’s Climate Change Act; Fukushima’s solar future appeared first on Carbon Brief.
Climate Change
How a Brazil-led roadmap can rescue global pledge to halt deforestation
Marcelo Behar is the COP30 Special Envoy for Bioeconomy and co-founder of Ambition Loop Brazil.
Can we be the generation to end the rampant deforestation that is harming the planet’s ecosystems and climate? Back in February, the Brazilian COP30 Presidency opened a call for submissions on its proposed Roadmap for Halting Deforestation and Forest Degradation, which closes today.
What might look like a technical step quickly drew significant attention, with more than 100 responses submitted by governments, civil society organisations, businesses and other stakeholders.
This level of engagement is telling. It reflects both the urgency of the issue and the recognition that this process could shape whether the global goal to end deforestation by 2030 finally moves from ambition to delivery.
As a Brazilian, I see this moment with both pride and realism. Brazil has played a central role in elevating forests on the climate agenda, and the COP30 Presidency has shown leadership in carrying this issue forward far beyond the Belém summit.
COP30 rainforest fund unlikely to make first payments until 2028
But last year also offered a sobering signal. Despite strong efforts from the Brazilian Presidency, the proposed roadmap did not secure consensus in the final outcome of COP30. That outcome underlined a simple truth: while there is broad recognition of the importance of forests, agreeing on how to move forward remains complex. The road ahead is still long and likely uneven.
That is precisely why this moment matters.
Progress on commitments falling short
The world is not short of commitments. Over the past decade, countries have repeatedly pledged to halt and reverse deforestation by 2030. There is a growing body of experience through the REDD+ (Reducing Emissions from Deforestation and Degradation) programme, including the emergence of jurisdictional approaches that are beginning to connect forest protection with finance at scale.
Initiatives such as the Forest and Climate Leaders’ Partnership have helped sustain political attention and cooperation among countries, while national strategies continue to evolve, and Indigenous Peoples and local communities remain at the forefront of protecting forests.
And yet, progress is still falling short.
The gap is not only one of alignment. It is also one of political will – and of having a credible, shared pathway that brings together these efforts in a way that drives implementation at scale.
Civil society is watching this process closely. For many organisations working across climate, nature and conservation, this is not just another initiative – it is a priority. After years of advocating to end deforestation, there is a strong sense that this moment cannot be lost. The expectation is clear: this roadmap must move beyond intention and help unlock real progress.
The opportunity now is to ensure that it does exactly that. This cannot become another report.
Implementation key to roadmap success
A detailed assessment of pathways and challenges, however valuable, will not be enough to change outcomes on the ground. What is needed is an implementation roadmap, one that connects existing commitments, aligns incentives and provides clarity on how to move from ambition to delivery between now and 2030.
The consultation process is an important step. But its value will ultimately be judged by what it produces.
If the roadmap is to succeed, several priorities should guide its development.
First: policy. It must be designed as a tool for implementation. That means going beyond diagnosis to define concrete action: who needs to act, by when, and how progress will be tracked. The solutions are not new, but coordination has been missing.
Second: accountability. It should bring coherence to the existing landscape. The value of a roadmap lies not in creating new commitments, but in connecting what already exists: global targets, REDD+ experience, national action plans, Indigenous leadership and supply chain initiatives. Reducing fragmentation is essential to accelerating delivery.
Early milestones needed
Third: finance. It must be grounded in economic reality. Halting deforestation will not happen without addressing the incentives that underpin it. Aligning public finance, private investment, and market demand with forest protection is not a technical detail; it is the core of the transition.
Fourth: transparency. Legitimacy will depend on openness. A credible roadmap cannot be developed behind closed doors. Governments, Indigenous Peoples and local communities, civil society, business and finance actors all have a role to play and must be able to see how their contributions shape the outcome.
Fifth: urgency. Progress must be visible in 2026. Without early milestones, momentum will fade. By the time climate negotiators gather in Bonn mid-year, the roadmap should have a clear structure, priority actions and growing political backing.
Governments must deliver on the plan
Finally, countries themselves will need to step forward. Last year’s outcome showed that support alone is not enough. Delivering this roadmap will require active political engagement. That means governments that are willing not only to participate in the process, but to help shape and implement it.
Brazil has created an important opening. It has also taken on the responsibility that comes with leadership: to help turn a widely supported idea into something that can deliver in practice.
The commitment to end deforestation by 2030 already exists. What is still needed is a path. And the courage to walk it.
The post How a Brazil-led roadmap can rescue global pledge to halt deforestation appeared first on Climate Home News.
How a Brazil-led roadmap can rescue global pledge to halt deforestation
Climate Change
UK imports of “green” jet fuel linked to Amazon deforestation
A US biofuels producer that exports “green” aviation fuel to Britain and the European Union has purchased beef tallow from a Brazilian supply chain tied to illegal deforestation in the Amazon, shipping data and a court document show.
Diamond Green Diesel (DGD), a major provider of sustainable aviation fuel (SAF) and renewable diesel, has sourced hundreds of thousands of tonnes of beef tallow from Brazil, alongside waste fats from other sources, over the last three years, as global demand for biofuel feedstocks soars.
Reporting by Unearthed and nonprofit investigative outlet Repórter Brasil reveals DGD’s connection to a rendering plant that has sourced supplies from a meatpacker fined for buying cattle from an illegally deforested Amazon reserve. A previous investigation by Reuters and Repórter Brasil found DGD had bought animal fat from two other rendering factories linked to supplies of cattle from illegal ranches.
The newly identified factory, Pacífico Indústria e Comércio de Óleos e Proteínas Ltda, which is based in Cacoal, a small city in the far-western Amazon state of Rondônia, has been supplied by Rondônia meatpacker DistriBoi, a 2022 court document shows.
DistriBoi was fined two years ago for illegally purchasing cattle from the state’s Jaci-Paraná conservation reserve, which has been ravaged by illegal ranching.
There is no suggestion that the companies involved were aware of deforestation at farm level. But the findings suggest a traceability gap in the supply chain of feedstocks for sustainable fuels, where cattle by-products are subject to less oversight than the primary commodities of the cattle industry, such as meat and leather.


Pristine rainforest blanketed the Jaci-Paraná reserve when it was created 30 years ago to protect traditional forest activities such as rubber tapping and nut harvesting.
Today, illegal ranching has devoured nearly 80% of its forest cover and it has become a notorious example of the devastation wrought by land grabbers in the world’s largest rainforest.
“The damage to biodiversity has been devastating,” said local Indigenous activist Neidinha Suruí, who featured in the 2025 Emmy Award-winning documentary “O Território”.
“It is sad to see what has been lost,” she said.
Greener air travel?
The “renewable diesel” and sustainable aviation fuel (SAF) that are being exported by DGD – a joint venture between US oil refiner Valero Energy Corp and Texas-based Darling Ingredients – are classed as “green” because they are made from feedstocks classified as waste, including tallow, which consists of fat separated from cattle carcasses.
Many governments and airlines are pinning their hopes for greener flying on SAF made with organic waste materials, including Britain which introduced a compulsory blending requirement last year.
Top green jet fuel producer linked to suspect waste-oil supply chain
Air travel accounts for about 2.5% of global carbon emissions and in contrast to other transport sectors that can be electrified, shrinking aviation’s carbon footprint is much more difficult.
Waste products such as beef tallow and used cooking oil (UCO) are considered the greenest of viable SAF feedstocks on the grounds that they do not create competition with foodstuffs such as soy oil or palm oil, nor increase deforestation pressure.


But there is concern that the global rush to ramp up SAF use could indirectly exacerbate deforestation pressure by increasing demand for feedstocks such as tallow and UCO.
That could increase the profit margins of cattle ranches – including illegal ones – and have other unintended consequences, such as encouraging fraud in supply chains, as Climate Home News has reported.
An investigation published in March by Climate Home News and Swedish broadcaster SVT found that Finnish biofuels giant Neste is sourcing key ingredients for its SAF from an opaque supply chain that enables fresh palm oil to be passed off as used, waste oil.
Because tallow is classified as waste by regulators in markets including the UK and EU, the green fuel industry’s most widely used certification scheme – International Sustainability and Carbon Certification (ISCC) – does not assess whether forests were cleared to rear the cattle that produced it in the first place.
This allows tallow from cattle to qualify as a sustainable feedstock for green fuels, even if they were raised on illegally deforested land.
“There is clearly an oversight within the rules if the products, in this case animal tallow, are originally coming from deforested land,” said Cian Delaney, a campaign coordinator at the clean transport and energy advocacy group Transport & Environment.
That means government SAF mandates aimed at stemming air travel emissions could help boost the earnings of cattle ranchers linked to illegal deforestation in Brazil, where ranching and other forms of agriculture have been the main driver of forest loss.
Land grabbers clear way for ranchers
Once covered by an unbroken rainforest canopy, Rondônia’s Jaci-Paraná reserve has been decimated by illegal deforestation driven by cattle ranching – a major cause of tree loss in the Amazon.
Land-grabbers have seized – often violently – and cleared more than three-quarters of its forest for pasture, as ranching has steadily advanced into the southern Amazon.
Suruí, the local Indigenous activist, said companies that buy products derived from illegal activities perpetuate environmental crimes in the rainforest.
“If there were no meat processors buying illegally sourced cattle, there would be no land grabbing and no deforestation,” Suruí told Repórter Brasil, which partnered on the new investigation with Unearthed, and a team of journalists supported by JournalismFund Europe.
Lawsuits and linked supply chains
Brazilian President Luiz Inácio Lula da Silva has pledged to end all deforestation in the country by 2030, in part by strengthening environmental enforcement in the world’s biggest rainforest.
In Rondônia, authorities have launched more than 50 lawsuits related to land-grabbing and deforestation in the Jaci-Paraná reserve alone. Local slaughterhouse DistriBoi is named in 31 of the lawsuits, including the 2024 case in which it was fined.
According to the 2022 court document, which concerned an unrelated labour dispute, lawyers for Pacífico refer to DistriBoi as the rendering plant’s “largest supplier of raw materials”.
US-based DGD received almost 15,000 tonnes of tallow from Pacífico from 2023 to 2025 at its Texas refinery, as well as used cooking oil from various countries and sources, according to trade database Panjiva.


Darling Ingredients is also a parent company of Pacífico since its 2022 acquisition of Brazilian rendering company FASA Group.
A spokesperson for Darling Ingredients denied that Pacífico had sourced beef residues from DistriBoi’s Ji-Paraná slaughterhouse – one of two that the meatpacker operates in Rondônia.
“The rendering plant Pacífico does not source any materials from the slaughterhouse Distriboi in Ji-Paraná,” the spokesperson said in an emailed response, without providing evidence or commenting directly on the content of the 2022 court document.
Darling did not respond to a follow-up question about Distriboi’s other slaughterhouse in the region, which, according to cattle transfer documents, has also bought from a farm that has illegally cleared forest within the extractive reserve.
“Our relationships are typically with the slaughterhouse, several levels removed from cattle ranchers. Regardless, we are committed to ensuring our raw materials are deforestation free. We expect our raw material suppliers to abide by our supplier code of conduct. In addition, we are in the process of requiring all [the] raw materials to attest that their material is deforestation free,” the spokesperson said in a statement.
DistriBoi said in an apparent reference to the pending Jaci-Paraná lawsuits that “the matters mentioned … are already under review, including by higher courts”. It has previously denied wrongdoing. The company’s statement did not address a question about its commercial ties to Pacífico.
Valero Energy, the major refiner that co-owns DGD with Darling Ingredients, did not respond to requests for comment, nor did DGD itself.
From slaughterhouse to SAF
In an effort to rein in carbon emissions from air travel, regulators in Britain and the EU have mandated progressively increasing SAF blending quotas in the years ahead, creating a new market for feedstocks including beef tallow.
Brazil’s exports of tallow to the US have risen sharply in recent years, up from less than 10,000 tonnes in 2021 to almost 400,000 tonnes last year, according to Panjiva, reflecting growing demand for biofuels like SAF.
In the UK, Europe’s biggest aviation market by seat capacity, jet fuel was required to contain 2% SAF by the end of 2025, rising to 10% by 2030 and 22% by 2040.
DGD shipped 134,000 tonnes of SAF worth nearly $90 million from Texas to the UK in 2025, according to trade data from Panjiva. The company also exported smaller amounts of renewable diesel to Britain.
The EU received biofuels, including small quantities of SAF, worth over $1.1 billion from DGD’s Texas refinery last year, figures show.
Is the world’s big idea for greener air travel a flight of fancy?
Unearthed’s investigation could not identify which airlines or airports buy DGD’s SAF once it arrives in Britain.
Valero, DGD’s other parent company, is positioning itself as a key player in the transition to lower-carbon fuels in the UK, where it markets its renewable diesel under the Texaco brand.
It has been an active participant in SAF policy discussions and has criticised the government’s planned cap on waste fat sources in SAF, calling them “the world’s most cost-effective production route for SAF” in a submission to parliament.
Helping to cut emissions?
Even tighter oversight over SAF feedstocks is crucial to ensure that blending mandates such as Britain’s are effectively lowering emissions, said Anna Krajinska, a director at Transport & Environment UK.
Forests store vast amounts of carbon; when they are cut down or burned this carbon is released into the atmosphere.
“If there’s tallow coming from land that’s been deforested, then those emissions might be so high that you might not be getting to the greenhouse gas reduction threshold,” Krajinska said.


But as the world’s appetite for flying keeps on growing, some experts say SAF is the only viable means to reduce aviation emissions at present.
Referring to the deforestation links identified in Unearthed’s investigation, Wouter Dewulf, an aviation economist at Belgium’s University of Antwerp, said it “would be important to assess how large this infraction is”.
“I’m quite sure you have aberrations,” Dewulf added. “But biofuels are the best alternative for the moment.”
T&E’s Delaney said there needs to be less opacity and better oversight from regulatory authorities. “Right now, there are just too many blindspots,” he added.
The post UK imports of “green” jet fuel linked to Amazon deforestation appeared first on Climate Home News.
UK imports of “green” jet fuel linked to Amazon deforestation
Climate Change
Is the Keystone XL Pipeline Back?
A company has proposed to build a crude oil pipeline crossing the Canadian border near where the long-contested project would have entered the United States.
No project better embodies the nation’s wild swings in climate and energy policy than the Keystone XL pipeline.
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