The UK government has released its long-awaited “warm homes plan”, detailing support to help people install electric heat pumps, rooftop solar panels and insulation in their homes.
It says up to 5m households could benefit from £15bn of grants and loans earmarked by the government for these upgrades by 2030.
Electrified heating and energy-efficient homes are vital for the UK’s net-zero goals, but the plan also stresses that these measures will cut people’s bills by “hundreds of pounds” a year.
The plan shifts efforts to tackle fuel poverty away from a “fabric-first” approach that starts with insulation, towards the use of electric technologies to lower bills and emissions.
Much of the funding will support people buying heat pumps, but the government has still significantly scaled back its expectations for heat-pump installations in the coming years.
Beyond new funding, there are also new efficiency standards for landlords that could result in nearly 3m rental properties being upgraded over the next four years.
In addition, the government has set out its ambition for scaling up “heat networks”, where many homes and offices are served by communal heating systems.
Carbon Brief has identified the key policies laid out in the warm homes plan, as well as what they mean for the UK’s climate targets and energy bills.
- Why do homes matter for UK climate goals?
- What is the warm homes plan?
- What is included in the warm homes plan?
- What does the warm homes plan mean for energy bills?
- What has been the reaction to the plan?
Why do homes matter for UK climate goals?
Buildings are the second-largest source of emissions in the UK, after transport. This is largely due to the gas boilers that keep around 85% of UK homes warm.
Residential buildings produced 52.8m tonnes of carbon dioxide equivalent (MtCO2e) in 2024, around 14% of the nation’s total, according to the latest government figures.
Fossil-fuel heating is by far the largest contributor to building emissions. There are roughly 24m gas boilers and 1.4m oil boilers on the island of Great Britain, according to the National Energy System Operator (NESO).
This has left the UK particularly exposed – along with its gas-reliant power system – to the impact of the global energy crisis, which caused gas prices – and energy bills – to soar.
At the same time, the UK’s old housing stock is often described as among the least energy efficient in Europe. A third of UK households live in “poorly insulated homes” and cannot afford to make improvements, according to University College London research.
This situation leads to more energy being wasted, meaning higher bills and more emissions.
Given their contribution to UK emissions, buildings are “expected to be central” in the nation’s near-term climate goals, delivering 20% of the cuts required to achieve the UK’s 2030 target, according to government adviser the Climate Change Committee (CCC).
(Residential buildings account for roughly 70% of the emissions in the buildings sector, with the rest coming from commercial and public-sector buildings.)
Over recent years, Conservative and Labour governments have announced various measures to cut emissions from homes, including schemes to support people buying electric heat pumps and retrofitting their homes.
However, implementation has been slow. While heat-pump installations have increased, they are not on track to meet the target set by the previous government of 600,000 a year by 2028.
Meanwhile, successive schemes to help households install loft and wall insulation have been launched and then abandoned, meaning installation rates have been slow.
At the same time, the main government-backed scheme designed to lift homes out of fuel poverty, the “energy company obligation” (ECO), has been mired in controversy over low standards, botched installations and – according to a parliamentary inquiry – even fraud.
(The government announced at the latest budget that it was scrapping ECO.)
The CCC noted in its most recent progress report to parliament that “falling behind on buildings decarbonisation will have severe implications for longer-term decarbonisation”.
What is the warm homes plan?
The warm homes plan was part of the Labour party’s election-winning manifesto in 2024, sold at the time as a way to “cut bills for families” through insulation, solar and heat pumps, while creating “tens of thousands of good jobs” and lifting “millions out of fuel poverty”.
It replaces ECO, introduces new support for clean technologies and wraps together various other ongoing policies, such as the “boiler upgrade scheme” (BUS) grants for heat pumps.
The warm homes plan was officially announced by the government in November 2024, stating that up to 300,000 households would benefit from home upgrades in the coming year. However, the plan itself was repeatedly delayed.
In the spending review in June 2025, the government confirmed the £13.2bn in funding for the scheme pledged in the Labour manifesto, covering spending between 2025-26 and 2029-30.
The government said this investment would help cut bills by up to £600 per household through efficiency measures and clean technologies such as heat pumps, solar panels and batteries.
After scrapping ECO at the 2025 budget, the treasury earmarked an extra £1.5bn of funding for the warm homes plan over five years. This is less than the £1bn annual budget for ECO, which was funded via energy bills, but is expected to have lower administrative overheads.
In the foreword to the new plan, secretary of state Ed Miliband says that it will deliver the “biggest public investment in home upgrades in British history”. He adds:
“The warm homes plan [will]…cut bills, tackle fuel poverty, create good jobs and get us off the rollercoaster of international fossil fuel markets.”
Miliband argues in his foreword that the plan will “spread the benefits” of technologies such as solar to households that would otherwise be unable to afford them. He writes: “This historic investment will help millions seize the benefits of electrification.” Miliband concludes:
“This is a landmark plan to make the British people better off, secure our energy independence and tackle the climate crisis.”
What is included in the warm homes plan?
The warm homes plan sets out £15bn of investment over the course of the current parliament to drive uptake of low-carbon technologies and upgrade “up to” 5m homes.
A key focus of the plan is energy security and cost savings for UK households.
The government says its plan will “prioritise” investment in electrification measures, such as heat pumps, solar panels and battery storage. This is where most of the funding is targeted.
However, it also includes new energy-efficiency standards to encourage landlords to improve conditions for renters.
Some policies were notable due to their absence, such as the lack of a target to end gas boiler sales. The plan also states that, while it will consult on the use of hydrogen in heating homes, this is “not yet a proven technology” and therefore any future role would be “limited”.
New funding
Technologies such as heat pumps and rooftop solar panels are essential for the UK to achieve its net-zero goals, but they carry significant up-front costs for households. Plans for expanding their uptake therefore rely on government support.
Following the end of ECO in March, the warm homes plan will help fill the gap in funding for energy-efficiency measures that it is expected to leave.
As the chart below shows, a range of new measures under the warm homes plan – including a mix of grants and loans – as well as more funding for existing schemes, leads to an increase in support out to 2030.

One third of the total funding – £5bn in total – is aimed at low-income households, including social housing tenants. This money will be delivered in the form of grants that could cover the full cost of upgrades.
The plan highlights solar panels, batteries and “cost-effective insulation” for the least energy-efficient homes as priority measures for this funding, with a view to lowering bills.
There is also £2.7bn for the existing boiler upgrade scheme, which will see its annual allocation increase gradually from £295m in 2025-26 to £709m in 2029-30.
This is the government’s measure to encourage better-off “able to pay” households to buy heat pumps, with grants of £7,500 towards the cost of replacing a gas or oil-fired boiler. For the first time, there will also be new £2,500 grants from the scheme for air-to-air heat pumps (See: Heat pumps.)
A key new measure in the plan is £2bn for low- and zero-interest consumer loans, to help with the cost of various home upgrades, including solar panels, batteries and heat pumps.
Previous efforts to support home upgrades with loans have not been successful. However, innovation agency Nesta says the government’s new scheme could play a central role, with the potential for households buying heat pumps to save hundreds of pounds a year, compared to purchases made using regular loans.
The remaining funding over the next four years includes money assigned to heat networks and devolved administrations in Scotland, Wales and Northern Ireland, which are responsible for their own plans to tackle fuel poverty and household emissions.
Heat pumps
Heat pumps are described in the plan as the “best and cheapest form of electrified heating for the majority of our homes”.
The government’s goal is for heat pumps to “increasingly become the desirable and natural choice” for those replacing old boilers. At the same time, it says that new home standards will ensure that new-build homes have low-carbon heating systems installed by default.
Despite this, the warm homes plan scales back the previous government’s target for heat-pump installations in the coming years, reflecting the relatively slow increase in heat-pump sales. It also does not include a set date to end the sale of gas boilers.
The plan’s central target is for 450,000 heat pumps to be installed annually by 2030, including 200,000 in new-build homes and 250,000 in existing homes.
This is significantly lower than the previous target – originally set in 2021 under Boris Johnson’s Conservative government – to install 600,000 heat pumps annually by 2028.
Meeting that target would have meant installations increasing seven-fold in just four years, between 2024 and 2028. Now, installations only need to increase five-fold in six years.
As the chart below shows, the new target is also considerably lower than the heat-pump installation rate set out in the CCC’s central net-zero pathway. That involved 450,000 installations in existing homes alone by 2030 – excluding new-build properties.

Some experts and campaigners questioned how the UK would remain on track for its legally binding climate goals given this scaled-back rate of heat-pump installations.
Additionally, Adam Bell, policy director at the thinktank Stonehaven, writes on LinkedIn that the “headline numbers for heat pump installs do not stack up”.
Heat pumps in existing homes are set to be supported primarily via the boiler upgrade scheme and – according to Bell – there is not enough funding for the 250,000 installations that are planned, despite an increased budget.
The government’s plan relies in part on the up-front costs of heat pump installation “fall[ing] significantly”. According to Bell, it may be that the government will reduce the size of boiler upgrade scheme grants in the future, hoping that costs will fall sufficiently.
Alternatively, the government may rely on driving uptake through its planned low-cost loans and the clean heat market mechanism, which requires heating-system suppliers to sell a growing share of heat pumps.
Rooftop solar
Rooftop solar panels are highlighted in the plan as “central to cutting energy bills”, by allowing households to generate their own electricity to power their homes and sell it back to the grid.
At the same time, rooftop solar is expected to make a “significant contribution” to the government’s target of hitting 45-47 gigawatts (GW) of solar capacity by 2030.
As it stands, there is roughly 5.2GW of solar capacity on residential rooftops.
Taken together, the government says the grants and loans set out in the warm homes plan could triple the number of homes with rooftop solar from 1.6m to 4.6m by 2030.
It says that this is “in addition” to homes that decide to install rooftop solar independently.
Efficiency standards
The warm homes plan says that the government will publish its “future homes standard” for new-build properties, alongside necessary regulations, in the first quarter of 2026.
On the same day, the government also published its intention to reform “energy performance certificates” (EPCs), the ratings that are supposed to inform prospective buyers and renters about how much their new homes will cost to keep warm.
The current approach to measuring performance for EPCs is “unreliable” and thought to inadvertently discourage heat pumps. It has faced long-standing calls for reform.
As well as funding low-carbon technologies, the warm homes plan says it is “standing up for renters” with new energy-efficiency standards for privately and socially rented homes.
Currently, private renters – who rely on landlords to invest in home improvements – are the most likely to experience fuel poverty and to live in cold, damp homes.
Landlords will now need to upgrade their properties to meet EPC ratings B and C across two new-style EPC metrics by October 2030. There are “reasonable exemptions” to this rule that will limit the amount landlords have to spend per property to £10,000.
In total, the government expects “up to” 1.6m homes in the private-rental sector to benefit from these improvements and “up to” 1.3m social-rent homes.
These new efficiency standards therefore cover three-fifths of the “up to” 5m homes helped by the plan.
The government also published a separate fuel poverty strategy for England.
Heat networks
The warm homes plan sets out a new target to more than double the amount of heating provided using low-carbon heat networks – up to 7% of England’s heating demand by 2035 and a fifth by 2050.
This involves an injection of £1.1bn for heat networks, including £195m per year out to 2030 via the green heat network fund, as well as “mobilising” the National Wealth Fund.
The plan explains that this will primarily benefit urban centres, noting that heat networks are “well suited” to serving large, multi-occupancy buildings and those with limited space.
Alongside the plan, the government published a series of technical standards for heat networks, including for consumer protection.
What does the warm homes plan mean for energy bills?
The warm homes plan could save households “hundreds on energy bills” for those whose homes are upgraded, according to the UK government.
This is in addition to two changes announced in the budget in 2025, which are expected to cut energy bills for all homes by an average of £150 a year.
This included the decisions to bring ECO to an end when the current programme of work wraps up at the end of the financial year and for the treasury to cover three-quarters of the cost of the “renewables obligation” (RO) for three years from April 2026.
Beyond this, households that take advantage of the measures outlined in the plan can expect their energy bills to fall by varying amounts, the government says.
The warm homes plan includes a number of case studies that detail how upgrades could impact energy bills for a range of households. For example, it notes that a social-rented two-bedroom semi-detached home that got insulation and solar panels could save £350 annually.
An owner-occupier three-bedroom home could save £450 annually if it gets solar panels and a battery through consumer loans offered under the warm homes plan, it adds.
Similar analysis published by Nesta says that a typical household that invests in home upgrades under the plan could save £1,000 a year on its energy bill.
It finds that a household with a heat pump, solar panels and a battery, which uses a solar and “time of use tariff”, could see its annual energy bill fall by as much as £1,000 compared with continuing to use a gas boiler, from around £1,670 per year to £670, as shown in the chart below.

Ahead of the plan being published, there were rumours of further “rebalancing” energy bills to bring down the cost of electricity relative to gas. However, this idea failed to come to fruition in the warm homes plan.
This would have involved reducing or removing some or all of the policy costs currently funded via electricity bills, by shifting them onto gas bills or into general taxation.
This would have made it relatively cheaper to use electric technologies such as heat pumps, acting as a further incentive to adopt them.
Nesta highlights that in the absence of further action with regard to policy costs, the electricity-to-gas price ratio is likely to stay at around 4.1 from April 2026.
What has been the reaction to the plan?
Many of the commitments in the warm homes plan were welcomed by a broad range of energy industry experts, union representatives and thinktanks.
Greg Jackson, the founder of Octopus Energy, described it as a “really important step forward”, adding:
“Electrifying homes is the best way to cut bills for good and escape the yoyo of fossil fuel costs.”
Dhara Vyas, chief executive of the trade body Energy UK, said the government’s commitment to spend £15bn on upgrading home heating was “substantial” and would “provide certainty to investors and businesses in the energy market”.
On LinkedIn, Camilla Born, head of the campaign group Electrify Britain, said the plan was a “good step towards backing electrification as the future of Britain, but it must go hand in hand with bringing down the costs of electricity”.
However, right-leaning publications and politicians were critical of the plan, focusing on how a proportion of solar panels sold in the UK are manufactured in China.
According to BBC News, two-thirds (68%) of the solar panels imported to the UK came from China in 2024.
In an analysis of the plan, the Guardian’s environment editor Fiona Harvey and energy correspondent Jillian Ambrose argued that the strategy is “all carrot and no stick”, given that the “longstanding proposal” to ban the installation of gas boilers beyond 2035 has been “quietly dropped”.
Christopher Hammond, chief executive of UK100, a cross-party network of more than 120 local authorities, welcomed the plan, but urged the government to extend it to include public buildings.
The government’s £3.5bn public sector decarbonisation scheme, which aimed to electrify schools, hospitals and council buildings, ended in June 2025 and no replacement has been announced, according to the network.
The post Q&A: What UK’s ‘warm homes plan’ means for climate change and energy bills appeared first on Carbon Brief.
Q&A: What UK’s ‘warm homes plan’ means for climate change and energy bills
Climate Change
India sets achievable green electricity and emissions instensity targets
India has unveiled long-awaited climate goals that aim to cut the carbon intensity of its economy, plant trees and expand clean electricity capacity.
The targets, approved by India’s government on Wednesday, will form the basis of the country’s nationally determined contribution (NDC), which it failed to submit by last year’s deadline.
The headline target to reduce greenhouse gas emissions per unit of GDP by 47% by 2035 from 2005 levels, represents only a slight improvement on India’s previous goal to reduce its carbon intensity 45% by 2030.
The government also set a goal for non-fossil fuels to account for 60% of electricity generation capacity by 2035, and approved targets for carbon sinks.
Reactions from analysts were generally positive. Avantika Goswami, climate lead at the Centre for Science and Environment think tank, said that the targets show “India is pulling more than its weight given its minimal historical contribution to emissions” despite “backtracking” from developed countries.
But Lauri Myllyvirta, lead analyst at the Centre for Research on Energy and Clean Air, said the targets are too easy to meet as they “underestimate the country’s potential for transformative clean energy growth”.
Emissions intensity target
Most countries set targets to reduce their absolute emissions levels by a certain percentage by a particular year. But several major developing countries – like China and India – aim instead to reduce their emissions per unit of economic activity, allowing the economy to grow without making the target harder to meet.
In its statement, the government said that India had reduced its emissions intensity by 36%, from 2005 levels, by 2020. It aims to build on this by setting a target to reduce intensity by 47% by 2035.
Myllyvirta warned that the target allows for India’s emissions growth to accelerate compared with past rates if the country achieves its GDP growth projections. But he added that “India’s booming clean energy industry is highly likely to deliver much faster progress than policymakers were prepared to commit to today”.
Clean electricity target
The government set a target for non-fossil fuels to provide 60% of the country’s electricity generation capacity by 2035.
Railways minister Ashwini Vaishnaw acknowledged that the 60% non-fossil capacity target was “very easily” achievable, noting that India had already reached 52%. Myllyvirta agreed, predicting the threshold would be crossed by 2030, five years early.
Ulka Kelkar, executive programme director at World Resources Institute India, said it was “heartening” that India’s domestic electricity plan has a more ambitious target – 70% by 2035 – than it is committing to internationally.
Wind and, particularly, solar power have boomed in India over the last decade, while hydropower and, to a lesser extent nuclear energy, continue to provide a steady level of electricity.
The fossil fuel half of India’s electricity capacity is overwhelmingly provided by coal-fired power stations, tapping into the country’s abundant domestic coal reserves. Gas provides a much smaller share of electricity.
Carbon sink target
The third target approved on Wednesday is to increase India’s carbon sink, through trees and forests, by 3.5-4 billion tonnes of carbon dioxide equivalent by 2035 from 2005 levels.
The government said the sink had already grown by 2.29 billion tonnes by 2021. This means the target could be met even if the pace of increase slows.
Aarti Khosla, director of Indian research and consultancy group Climate Trends, said this target “reinforces the country’s commitment to nature-based solutions”.
Souparna Lahiri, from the Climate Land Ambition and Rights Alliance, told Climate Home News that the target was “not unexpected” as India has always had “massive” forest-growing programmes as well as social forestry.
He highlighted the CAMPA mechanism, which requires developers who clear forests in one area to plant replacement trees elsewhere, as a key driver of new planting, but cautioned that plantations must be monitored to ensure the trees actually survive.
Other NDCs still outstanding
The approval of the targets comes at the same time as the Paris Agreement’s Implementation and Compliance Committee meets in Bonn to discuss how to encourage governments to submit their overdue NDCs. India was the biggest-emitter yet to do so.
Harjeet Singh, director of the Satat Sampada Climate Foundation, said that “while the global community has waited with bated breath for this announcement, the result is a clear signal of integrity and commitment”.
“As a global economic powerhouse, India can further accelerate its domestic efforts if the developed world meets its obligation to provide adequate climate finance, ensuring that India’s success becomes the world’s success”, he added.
The post India sets achievable green electricity and emissions instensity targets appeared first on Climate Home News.
India sets achievable green electricity and emissions intensity targets
Climate Change
Limiting global warming to 2C would not ‘rule out’ extreme impacts
Limiting warming to 2C above pre-industrial temperatures may not be enough to prevent “extreme global climate outcomes”, according to research published in Nature.
The authors simulate climate extremes – such as drought in breadbasket regions and flooding in populated areas – under a 2C warming scenario using a range of different global climate models.
They find that the “worst-case” model projections in a 2C warmer world are often more severe than the “average” scenarios in a 3C or 4C warmer world.
An author on the study tells Carbon Brief that, for policymakers planning around risk, it is “really important” to account for these potential extremes at 2C.
The findings are “sobering” and “demonstrate that the risks at 2C of global warming may be significantly higher than previously thought”, according to one scientist who was not involved in the study.
He adds that the methods used in the research would “offer a very useful contribution” to any future “global assessment of avoidable climate-change risks”.
High-risk scenarios
As the planet warms, climate extremes such as floods and droughts are becoming more intense and frequent. For policymakers to effectively plan and adapt to upcoming changes, they need to understand how severe these events could become.
Scientists routinely use global climate models to simulate how extremes may change over the coming decades. One well-established way to present these results is to run simulations using multiple models, then take the average of these results.
This average is known as the “multimodel mean”. Model results typically cluster around the mean, giving scientists more confidence in these results, but there are often also individual projections that sit notably higher or lower.
Prof Erich Fischer is a lecturer in environmental systems science at ETH Zurich and an author on the paper. He tells Carbon Brief that focusing on the multimodel mean is a “very valuable” communication tool for climate scientists, providing a “simpler” message than showing the full range of results.
For example, he tells Carbon Brief that the Intergovernmental Panel on Climate Change (IPCC) – the world’s most authoritative source on climate change – uses the multimodel mean to produce many of its maps.
However, Fischer warns that from a “risk perspective”, focusing solely on the multimodel mean could give a “misleading picture”. For example, he adds, the changes that specific regions may see could be “much, much higher” than the global average.
He tells Carbon Brief that for policymakers planning around risk, it is “really important” to account for more extreme cases too.
To demonstrate this, the study authors select 42 models from the Coupled Model Intercomparison Project 6 (CMIP6). These are the models that are used most widely in the latest set of IPCC reports.
Their approach is illustrated in the diagram below. Note that this illustration is not based on real model runs, but is intended to give an example of what a set of results could look like.
The beige strip on the right shows the spread of results, where each horizontal bar indicates a different model. The models simulating the “worst-case” outcomes (red lines) are at the top and those showing the “best-case” climate outcomes (blue lines) are at the bottom. The majority of models are clustered towards the centre of the bar, close to the multimodel mean (thick black line).

The authors selected three types of events to analyse:
- Rainfall extremes in highly populated areas, which may induce flooding
- Concurrent droughts in global breadbaskets, which threaten food security
- Fire weather extremes across the world’s forests
For each event type, the authors assess the spread of results. They rank the model outputs by the severity of each type of event and compare these to the multimodel mean at different levels of warming – including 2C, 3C and 4C above pre-industrial temperatures.
In many instances, the “worst-case climate outcomes” in a 2C world are more severe than the multimodel mean in a 3C or 4C world.
Prof Rowan Sutton, director of the Met Office Hadley Centre, who was not involved in the study, tells Carbon Brief that the study’s findings are “sobering”. He adds that the paper “demonstrates that the risks at 2C of global warming may be significantly higher than previously thought”.
In its latest assessment report, the IPCC projected that, under current policies, the world could reach 2C of warming between 2037 and 2084, with a central estimate of 2052. (For more on when the IPCC says warming thresholds will be passed, read Carbon Brief’s explainer.)
Breadbasket drought
The analysis of drought in key breadbasket regions provided the “most striking results”, Dr Emanuele Bevacqua, a researcher at the Helmholtz Centre for Environmental Research and lead author of the study, tells Carbon Brief.
To assess the worst-case scenario, the authors simulated drought frequency in “critical breadbasket areas across the world”, he explains.
These are the regions where most of the world’s maize, wheat, soybean and rice is grown, including regions of northern and southern America, Europe, south-eastern Asia and Australia.
The spread of model results is shown below.
The vertical bars indicate the percentage change in average drought frequency between a pre-industrial and 2C warmer world, where more-frequent drought is at the top of the bar and less-frequent drought is at the bottom.
On the left bar, each horizontal line indicates one model. The models showing the “worst-case climate outcomes” are highlighted at the top of the bar. On the right bar, the horizontal bars show the multimodel means for warming levels of 2C, 2.5C, 3C and 4C.

The percentage change in drought frequency in key breadbasket regions between a pre-industrial and 2C warmer world. On the beige bar (left), each horizontal line indicates a model. On the grey bar (right), the horizontal bars show the multimodel means for warming levels of 2C, 2.5C, 3C and 4C. Source: Bevacqua et al. (2026)
They find that 10 of the 42 models simulate a level of drought frequency at a 2C warming level that is higher than the multimodel mean at 4C warming.
(Some models also project a lower level of drought frequency at 2C warming than the multimodel mean. However, the focus of the study is to capture the most severe risks, which are particularly relevant for risk management.)
Bevacqua tells Carbon Brief that this result “makes it very clear that even if we stop [warming] at 2C, we cannot rule out the fact that we might end up in a worst-case outcome”.
The authors also conduct their analysis for extreme rainfall in populated regions. Although they find a wide range of model results, none of the simulations of extreme rainfall at 2C are higher than the multimodal mean at 4C.
Meanwhile, analysing the risk of wildfires to the world’s forests reveals that four of the models simulate more severe fire risk at 2C than the multimodel mean at 3C and none simulate more severe fire risk at 2C than at 4C.
The spread of model results for rainfall (left) and wildfire (right) are shown below.

Dr Karen McKinnon is an associate professor in statistics and the environment at the University of California, Los Angeles. McKinnon, who was not involved in the study, tells Carbon Brief that the study highlights that “risks are obscured when considering averages across multiple climate models”.
‘Worst-case scenarios’
The authors find that the ranking of models was different across the three case studies. In other words, the same models did not produce the “worst-case” climate outcomes in every type of event.
When assessing the impact of future extremes, the findings emphasise the need to select models that “sample the full range of possible climate outcomes”, the paper says. It adds:
“Currently, large-scale initiatives such as the latest protocol of the Inter-Sectoral Impact Model Intercomparison Project (ISIMIP) rely on a limited subset of climate models that likely omits the best- and worst-case climate models.”
ISIMIP is a global modelling effort to project the impacts of climate change across different sectors. Bevacqua notes:
“[O]ur results suggest that ISIMIP-based simulations probably underestimate the range of possible global impacts at a fixed global warming level of +2C.”
He adds:
“This is worrying and calls for new approaches that can somehow lead to accounting for this.”
The study also shows that many “best-case” model outcomes for a 2C world project a lower level of risk than the multimodel mean. However, Fischer notes that “even the best-case scenario” shows that extremes will become more severe with warming.
Fischer says that the study authors are not “doomscrolling” and notes that “landing somewhere in the middle is still the more likely outcome”. However, he emphasises the importance of considering the high-impact model outcomes for planning around risk.
Communicating risk
Climate scientists and policymakers have been discussing how best to assess and communicate climate risk for decades.
Dr Robert Vautard – senior climate scientist at France’s National Centre for Scientific Research at Institut Pierre-Simon Laplac, who was not involved in the study – tells Carbon Brief that the study provides “very insightful examples of outcomes for communicating risks”.
However, he questions whether the “global indices” used in this study would be relevant for developing “regional” adaptation plans, noting that worst-case impacts in the model “may not be the most problematic locally”.
Last month, a group of leading climate scientists published a comment article – also in Nature – calling for a global climate risk assessment that identifies the “worst-case scenarios” and helps societies to prepare for them.
The article says:
“Global assessments made by IPCC have played, and continue to play, a crucial part in assessing the evidence about climate change. But the IPCC produces science assessments, rather than risk assessments. Its main focus has been to set out what is known with the greatest confidence.
“A climate risk assessment offers different information – it makes clear the scale and severity of risks, to inform judgments about the priority to be given to avoiding or mitigating them.”
Sutton, the Hadley Centre director, is an author on the article. He tells Carbon Brief that “from a policy and decision-making perspective, climate change is a problem of risk assessment and risk management”.
He says that the methods used in this study “offer a very useful contribution to a global assessment of avoidable climate-change risks”.
The post Limiting global warming to 2C would not ‘rule out’ extreme impacts appeared first on Carbon Brief.
Limiting global warming to 2C would not ‘rule out’ extreme impacts
Climate Change
Cropped 25 March 2026: Seabed mining talks stall | ‘Blueprint’ for land use | India feels Iran war impacts
We handpick and explain the most important stories at the intersection of climate, land, food and nature over the past fortnight.
This is an online version of Carbon Brief’s fortnightly Cropped email newsletter.
Subscribe for free here.
Key developments
Seabed mining talks stall
UNFINISHED BUSINESS: The International Seabed Authority (ISA) ended a two-week meeting in Kingston, Jamaica, without agreement on the “long-delayed” code for deep-sea mining, which “remains both unfinished and deeply contested”, said Oceanographic. Several countries raised “fundamental scientific, environmental and governance gaps” in the draft regulations, it added. CBC News reported that although the ISA’s executive secretary, Leticia Carvalho, had previously said she “hoped a mining code could be finalised this year”, she “did not provide a new timeline” following the most recent talks.
DOUBLE TROUBLE: Meanwhile, federal regulators in the US have announced that they have identified nearly 70m acres (283,000 square kilometres) of seabed off the Northern Mariana Islands “that could be open to mineral leasing”, reported E&E News. The outlet noted that this recommendation was nearly double the government’s initial area under consideration, announced last autumn.
-
Sign up to Carbon Brief’s free “Cropped” email newsletter. A fortnightly digest of food, land and nature news and views. Sent to your inbox every other Wednesday.
PROCESS PROBLEMS: The CBC News article noted that 40 member countries now support a moratorium on deep-sea mining, but the ISA has “faced mounting pressure in recent months after the US…moved to begin approving mining outside the ISA process”. In the Conversation, an international-law expert from Duke University wrote: “The Trump administration’s attempt to unilaterally exploit the seabed resources of the global commons will severely undermine part of the rules-based international order that the US built and of which it has been the main beneficiary.”
England’s new ‘blueprint’ for land use
‘BLUEPRINT’: The UK government released its “long-awaited and much-delayed” land-use framework, detailing how England can optimise its land for food, housing, climate and nature, reported Carbon Brief. The “blueprint” found that “England has enough land to meet all of its objectives, if land is used efficiently”, the outlet added. The Guardian said that “farmers and campaigners broadly welcomed the framework”, with the president of the National Farmers’ Union saying that implementation “will require clear guidance, the right policy framework and incentives to avoid unintended outcomes”.
PRACTICAL MATTERS: Alongside the framework, the Environment, food and rural affairs committee of the UK parliament “launched a major inquiry into how England’s land is used”, reported FarmingUK. The inquiry will focus on how the land-use framework “works in practice”, it added. The outlet said: “Looking ahead, the committee will scrutinise how government policy [on land use] is coordinated across departments.”
SLOW PROGRESS: Meanwhile, the National Audit Office found that nature-restoration progress across England has “slowed due to ‘recent funding uncertainty’”, reported Agriland. The office examined the Nature for Climate Fund, a programme under the Department for Environment, Food & Rural Affairs, which was established in 2020 and “led to a substantial increase in tree-planting and peatland restoration”, the outlet said. However, the report also found that “targets in England will continue to be missed” without substantial changes, said the Forestry Journal.
News and views
- PROTECTED WATERS: On 10 March, outgoing Chilean president Gabriel Boric signed a decree to expand and “fully protect” two marine protected areas that “harbour the highest concentration of marine species found nowhere else on Earth”, Island Conservation reported. The new administration told the Guardian that its “intention is not to eliminate protections” and, barring legal and technical issues, it will allow the areas “to go forward as planned”.
- BUSINESS CLASH: Following “clashes” with the agribusiness sector, Brazil launched its new climate plan, which calls for a 49-58% reduction in greenhouse gas emissions from 2022 levels by 2035, reported Folha de Sao Paolo. Meanwhile, Climate Home News wrote that the “Tropical Forest Forever Facility” – which Brazil championed – is “unlikely to make payments to rainforest countries until at least 2028”.
- SAVE THE FISHES: A new UN report identified 325 freshwater fish species “requiring coordinated international conservation action” to address declining populations due to overexploitation, habitat degradation and other compounding pressures, said Down to Earth. The report was launched at the 15th Conference of the Parties to the UN Convention on the Conservation of Migratory Species of Wild Animals, which began on Monday in Campo Grande, Brazil.
- FACE PALM: A Climate Home News and SVT investigation found that Neste – the world’s largest producer of sustainable aviation fuel (SAF) – was sourcing “key ingredients from an opaque supply chain” that allowed “fresh palm oil to be passed off as waste”. Neste said it would look into the outlets’ findings, adding that it was “currently not aware of any verified cases of fraud” in its raw-materials sourcing.
- CRITICAL HABITAT: The US government plans to approve the country’s first critical-minerals mine in Patagonia, Arizona, even as locals warn of potential water and biodiversity impacts, Inside Climate News reported. The project site – which holds “one of the largest undeveloped zinc resources in the world” – borders “one of the most important biodiversity hotspots in North America”, which is home to 12 endangered species, including jaguars and Mexican spotted owls, the outlet added.
- RE-PEAT OFFENDERS: More than 370,000 tonnes of peat were exported from Ireland in 2025, with revenues totalling around €40m – “despite there being no known legal commercial peat extraction operation in the country”, said the Irish Times. This represents a higher volume than was exported in 2023 or 2024, but a decrease from the nearly one million tonnes exported in 2020, it added.
- ‘FIELDS OF IRON’: Rural voters in Denmark have begun to “sour” on solar power, with one populist leader in 2024 saying “no to fields of iron!”, said the Guardian. Danish PM Mette Frederiksen “failed to secure a majority” in the country’s general election on Tuesday, where the climate footprint of agriculture has been a concern for voters, reported BBC News.
Spotlight
Plate half full
This week, Carbon Brief looks at the impact of the US-Israel-Iran war on India’s kitchens, restaurants, workers and farmers – and what it means for the climate.
On 23 March, two Indian-flagged tankers made their way through the mine-laden Strait of Hormuz, hugging Iran’s coastline.
The ships are carrying more than 90,000 tonnes of liquefied petroleum gas (LPG), equivalent to roughly one day of the country’s cooking gas consumption.
In India – the world’s second-largest LPG importer – gas is intrinsically tied to food security.
With 60% of these imports sourced from Gulf countries, the war’s immediate impacts have been acutely visible in India’s kitchens and restaurants.
Lunch on the move
Since 10 March, many Indian cities and towns have seen snaking queues and skirmishes breaking out as India’s poor rushed to refill gas cylinders in the heat of an early summer.
As the government prioritised the 340m households that use LPG over commercial establishments, restaurants have faced “catastrophic closures”.
Ashok Vada Pav – birthplace of Mumbai’s vada pav, or potato burger, which has been described as the “soul of the [city’s] working class” – has shut its doors. Ramashraya – serving south Indian breakfasts since 1939 – had to turn away customers who have been coming there for decades.
However, hot lunches – cooked at home or purchased from the city’s many canteens – continue to travel the length of Mumbai in tiered steel tiffins carried by the iconic dabbawallahs.

Ramdas Karwande, president of the Mumbai Tiffin Box Suppliers Association, told Carbon Brief that, of the 80,000 lunches that dabbawallahs carry across the city each day, 40% are typically from caterers. That number has halved in the past weeks, he said.
Karwande explained:
“People who come to this city from places far away have no choice but to eat canteen food. But home food is still on the move, because everyone needs to eat somehow.”
Fuel to firewood
In an address to parliament on Monday, India’s prime minister Narendra Modi likened the fallout of the war to that of the Covid-19 pandemic – a comparison that has drawn criticism.
The cooking gas shortages have prompted an exodus of migrant workers leaving cities for their home states, where biomass cooking remains accessible.
Cities, such as Delhi and Mumbai, have put a pause on emissions curbs for dirtier fuels since 14 March, as poorer families facing soaring black-market gas prices turn to wood, kerosene and coal.
While government gas and biogas schemes have led to a decrease in firewood usage in many states over many years, analysts have said the current crisis “offers a critical moment to rethink India’s cooking energy mix”.
In Mumbai’s wealthy suburb of Khar, induction stoves have been “flying off shelves”, Jaffair Sheikh, who sells appliances at an upmarket electronic retail store, told Carbon Brief. He added:
“We’re selling 20 units a day, when we used to sell almost zero before this war.”
However, only 5% of India’s households have access to electric cooking devices and the country’s grid is still largely powered by coal.
Away from the cities, there is a looming fear of the war’s impact on agriculture, given India’s dependence on the Gulf for fertiliser imports.
Siraj Hussain, India’s former agriculture secretary, told Carbon Brief:
“Gas is the main raw material for urea – and urea stocks are grossly insufficient to meet even kharif season (May to July) demand. But if the government can reduce supply to states where excessive fertiliser is used and increase supply to states where consumption is low, to some extent, this deficit will not be as harmful as it would be otherwise.”
Crop stock and biofuel fears
Punjab’s farmers, meanwhile, were already worried about the impact of an early summer on wheat production.
However, Hussain told Carbon Brief that India’s food security in terms of wheat and rice “will not be affected too much” because the country is “sitting on” excessive stocks. He added that he hopes the war will “persuade the government” to reduce its use of rice for ethanol production.
Still, food inflation is already being felt across the country. Karwande added:
“Everyone is tense. The monthly payments we get are going down and running a house is now difficult: the same problems we had during lockdown are back. Oil, sugar, everything has become expensive. This is not just our problem; this is everybody’s problem. The government has to do something.”
Watch, read, listen
FARMERS’ FUTURES: High Country News explored how farmers in the Colorado River basin are dealing with water shortages “amid deep political divisions about the river’s future”.
FOOD SHOCK: Experts on Al Jazeera’s Counting the Cost podcast looked at whether the US-Israel war on Iran could “trigger the next global food shock”.
LYNX IN BIO: BBC News featured the winning images from the Wildlife Photographer of the Year People’s Choice Award. The photos will be on display at London’s Natural History Museum until 12 July.
ECO BREAKDOWN: Mongabay detailed the causes of the “mental health crisis” impacting conservationists, including biodiversity decline, climate change, low wages and burnout.
New science
- Less than half of the Amazon rainforest that was affected by the 2023-24 drought is “expected to recover to pre-drought conditions” within seven years | Proceedings of the National Academy of Sciences
- Beavers can turn the ecosystems surrounding streams into “persistent” sinks of carbon that can sequester an order of magnitude more than non-beaver-modified ecosystems can store | Communications Earth & Environment
- Climate change-induced heat could result in half a trillion hours of lost productivity by 2055 in a low-emissions scenario, disproportionately impacting low-income countries and agricultural workers | GeoHealth
In the diary
- 23 March-2 April: Third meeting of the preparatory commission for the High Seas Treaty, New York
- 24-27 March: 64th session of the Intergovernmental Panel on Climate Change, Bangkok
- 26-29 March: 14th ministerial conference of the World Trade Organization, Yaoundé, Cameroon
Cropped is researched and written by Dr Giuliana Viglione, Aruna Chandrasekhar, Daisy Dunne, Orla Dwyer and Yanine Quiroz. Please send tips and feedback to cropped@carbonbrief.org
The post Cropped 25 March 2026: Seabed mining talks stall | ‘Blueprint’ for land use | India feels Iran war impacts appeared first on Carbon Brief.
-
Greenhouse Gases8 months ago
Guest post: Why China is still building new coal – and when it might stop
-
Climate Change8 months ago
Guest post: Why China is still building new coal – and when it might stop
-
Greenhouse Gases2 years ago嘉宾来稿:满足中国增长的用电需求 光伏加储能“比新建煤电更实惠”
-
Climate Change2 years ago
Bill Discounting Climate Change in Florida’s Energy Policy Awaits DeSantis’ Approval
-
Climate Change2 years ago嘉宾来稿:满足中国增长的用电需求 光伏加储能“比新建煤电更实惠”
-
Climate Change Videos2 years ago
The toxic gas flares fuelling Nigeria’s climate change – BBC News
-
Carbon Footprint2 years agoUS SEC’s Climate Disclosure Rules Spur Renewed Interest in Carbon Credits
-
Renewable Energy5 months agoSending Progressive Philanthropist George Soros to Prison?









