Connect with us

Published

on

With Donald Trump, a notorious climate change sceptic, poised to enter the White House for a second term, the climate world – from officials to campaigners and business executives – is bracing for the impact of his presidency.

Trump, a Republican business mogul who has called climate change a “scam”, has made no secret about his intentions. From plans to withdraw the US from the Paris Agreement once more, to attacks on the scientific research underpinning our knowledge of global warming and the roll-back of key emission-cutting regulations, the incoming administration could mark a major setback for climate action.

Experts believe one of Trump’s first moves after being sworn in on January 20 could be to pull the US out of the landmark global climate agreement. If he takes that step – something he did last time around – the US would join just three other countries outside the Paris Agreement: Iran, Libya and Yemen.

Legal experts say Trump could quit Paris pact – but leaving UNFCCC much harder

The process to leave would take a year from the time Trump triggers it, meaning that the US will still be part of the Paris Agreement when the COP30 climate talks take place in Brazil in November.

Trump’s team is also reportedly mulling a more audacious attempt to pull the US out of the UN Framework Convention on Climate Change (UNFCCC), the instrument underpinning global climate action, for the first time. While leaving the Paris pact would be legally straightforward, experts are divided on whether Trump could withdraw the US from the UNFCCC without Senate approval and – if he did – how easy it would be for a future president to re-join.

Frances Colón, lead for international climate policy at the Center for American Progress, told journalists this week that Washington’s role at COP30 is “not clear”. “Diplomats will do their best, but they’ll have to see whether the White House will be interested at all in engaging in COP talks, and this is still an open question,” she said.

Leaving the Paris pact would mean the US would no longer have to report on its greenhouse gas emissions each year and would have weaker legal responsibilities to provide climate finance for developing countries to adopt clean energy and adapt to a warming world.

Developing-world climate dollars at risk

Joe Thwaites, senior advocate for international climate finance with the US-based Natural Resources Defense Council, said Trump’s administration is expected to try to cut back on international climate finance provision everywhere it can – but that doesn’t mean funding will fall to zero.

Early in his first term in 2017, when Trump announced that the US would leave the Paris Agreement, he launched a blistering attack on the UN’s Green Climate Fund (GCF) – which was littered with inaccuracies – and refused to deliver any more of a $3-billion pledge to the fund made by his predecessor, Barack Obama.

Super-rich have already burned more than their fair share of carbon for 2025

The US seems unlikely to stump up the $4 billion it now owes to the GCF under Trump, after the Biden administration made another large promise. But some international climate finance may be forthcoming if Congress continues approving money for organisations like the US Agency for International Development and the Global Environment Facility which back climate projects overseas.

“It’s not just about what Trump wants – and last time around, we saw that a lot… he didn’t get his way,” Thwaites said.

Trump-proofing climate finance

International climate finance allocations added up to about $600 million a year when Trump was previously in office. That’s a far cry from the roughly $11 billion a year provided by the end of Biden’s government, but advocates again plan to push hard to ensure the taps are not turned off.

Thwaites said international climate finance “is a vital investment”, adding “there’s still a strong case – including just a very self-interested case for why the US would want to carry on providing this kind of finance” – and geopolitically important partners such as small island developing states are likely to keep on asking for it as a priority.

In addition, the world is now better prepared for a climate-sceptic US president, he noted, compared with the shock in 2016. “People have priced in Trump’s impact,” Thwaites said.

A protester at COP29 calls on wealthy nations to “pay up” (Photo: UN Climate Change/Kiara Worth)

This was reflected at the COP29 climate summit in Baku, he said, where the deal on a new finance goal to channel money to developing countries reflected the likelihood of Washington not playing ball for the next four years in terms of its size and composition.

For example, the decision to allow all finance coming via multilateral banks to be counted towards the goal to provide government finance of $300 billion a year by 2035 means that contributions made by the US can be included in the total, even if it pulls out of the Paris pact. Wealthier emerging economies like China are also encouraged to make voluntary contributions, which could help make up any shortfall due to the US.

Uncertain future for EXIM

One US provider of finance to clean energy overseas, however, could be severely affected under Trump.

According to Kate DeAngelis, deputy director for international finance at Friends of the Earth, Trump will be under pressure from some Republicans in Congress not to renew authorisation for the EXIM (Export-Import) Bank when its current mandate runs out in 2026.

This would effectively shut down the organisation. EXIM is a semi-independent agency and has backed both fossil fuel and renewable energy deployment abroad under both the previous Trump and Biden administrations.

Bid to end export credit help for oil and gas fails, with Korea and Türkiye opposed

It is now considering support for about a dozen projects mining for minerals like lithium, which are needed for the energy transition. DeAngelis said this support is now in greater doubt because of the change in the presidency, although she suspects the bank would still back them.

Under Biden, the bank continued to support fossil fuel projects in countries like Bahrain, and that is very unlikely to change under Trump, she added.

Climate regulation bonfire

Fossil fuels are also expected to get a boost on the domestic front. Under his refrain of “drill, baby, drill”, the president-elect has promised to increase oil and gas extraction in the US, while rolling back many of the landmark climate regulations introduced by the Biden administration aimed at slashing emissions. 

Hannah Kolus, a senior analyst with Rhodium Group’s energy and climate practice, said it looks “very likely that Trump will pursue an aggressively deregulatory agenda” judging by his first stint in office and recent statements from the incoming administration. 

“Rolling back regulations would be a lengthy process, so it’s not going to happen on day one,” added Kolus, “but certainly by the end of his term, he could remove many of the key climate regulations enacted over the past four years.”

WA Parish Generating Station, a natural gas and coal power plant, in Fort Bend County near Houston, Texas on June 25, 2023. (Photo by Reginald Mathalone/NurPhoto)

The Environmental Protection Agency’s greenhouse gas (GHG) standards for power plants could be first on the chopping block. Announced less than a year ago, the rules require existing coal-fired power plants that plan to operate beyond 2039 and large new gas-fired power stations to cut 90% of their GHG emissions by 2032. Trump vowed to revoke those regulations on the election campaign trail last August when he described them as an “anti-American energy crusade”. 

Another set of rules aimed at “sharply” reducing methane emissions from oil and gas operations risk a similar fate, along with a new levy meant to punish those not complying with the measures. Fossil-fuel lobby groups have repeatedly called on the incoming administration to cancel the methane regulations.

To reform climate COPs, we should start with the voting rules

More stringent emissions standards for passenger cars and small trucks – announced in March 2024 – may also be targeted. 

Rachel Cleetus, policy director with the climate and energy programme at the Union of Concerned Scientists (UCS), said it is “very clear” the broader intention is to boost the fossil fuel sector. The rhetoric of many nominees for key positions in the incoming administration is about “delivering for the fossil fuel industry, promoting their profits, their narrow interest over the public interest,” she told Climate Home. 

Reprieve for IRA measures?

While reversing specific regulations might be an easy win for Trump, the future of the mammoth clean energy incentives enacted through the Inflation Reduction Act (IRA) remains less clear. 

Trump has repeatedly taken aim at tax credits for electric vehicles and renewable energy, labelling them wasteful spending. Reuters reported last November that his transition team was working on plans to kill off the subsidies. 

But experts think it won’t be easy for the Trump administration to dismantle the IRA. Congress holds the power to modify tax credits and, although it is now Republican-controlled, Trump could struggle to convince enough lawmakers to push through its agenda. 

Rhodium Group’s Kolus said that’s because Republican districts have benefited the most from IRA subsidies so far – and there’s a history of bipartisan support for many of those. “It seems unlikely that Congress is going to repeal all of the energy tax credits,” she added. 

Leading Republican House Speaker Mike Johnson suggested that “a scalpel and not a sledgehammer” should be used for making changes. Whichever tool Trump ends up wielding, the question is what that would do to the emissions-cutting targets spelled out in the US’s updated Nationally Determined Contribution (NDC) under the Paris Agreement unveiled last December. 

The Biden administration insisted that the US could reach the goal of cutting greenhouse gas emissions by 61-66% below 2005 levels by 2035, even if Trump rolls back climate policy. But others are more sceptical. Even if the IRA was left untouched, undoing regulations on fossil fuel standards alone would put the US on a less ambitious path to reduce emissions by 31-51% by 2035, according to modelling by Rhodium Group. 

Climate science under threat

Climate science is another domain where experts fear the incoming administration will go on the offensive. Trump has a lengthy track record of amplifying disinformation while denigrating legitimate climate research. 

Cleetus of UCS told Climate Home “a very somber mood” pervades the scientific community as it braces for the start of an administration that, she said, “holds a deeply anti-scientific view”. 

Cleetus expects the Trump team will try and “take a wrecking ball” to federal agencies at the forefront of climate research. That would include the Environment Protection Agency and the National Oceanic and Atmospheric Administration (NOAA), which plays a crucial role in monitoring global temperatures and devising climate models. 

Record-hot 2024 shows world must adapt to extremes, says EU climate service

“It is a real problem,” said Cleetus, “because these career scientists are doing the kind of bedrock science that helps inform good policies that we can take to both prevent climate change and protect against its impacts.”

And the consequences of a potential Trump attack on climate science would reach far beyond the American borders. The US government is one of the world’s largest supporters of climate science and its federal agencies provide key instruments, such as satellites, that facilitate the understanding of global warming, its causes and impacts across the globe.  

Despite the gathering storm clouds, Cleetus said “we should not concede that this destruction will be complete”.

“Just because all of these political signals are aligned one way, it does not mean that we live in a dictatorship,” she added. “The United States is still a democracy. There are public interests that will come forward in different kinds of ways.”

(Reporting by Matteo Civillini; additional reporting by Joe Lo and Megan Rowling; editing by Megan Rowling)

The post What Trump’s second term means for climate action in the US and beyond appeared first on Climate Home News.

What Trump’s second term means for climate action in the US and beyond

Continue Reading

Climate Change

The EU should partner with Global South to protect carbon-storing wetlands

Published

on

Fred Pearce is a freelance author and journalist writing on behalf of Wetlands International Europe.

Everybody knows that saving the Amazon rainforest is critical to our planet’s future. But the Pantanal? Most people have never heard of Brazil’s other ecological treasure, the world’s largest tropical wetland – let alone understood its importance, as home to the highest concentration of wildlife in the Americas, while keeping a billion tonnes of carbon out of the atmosphere, and protecting millions of people downstream from flooding.

Hundreds of millions of euros are spent every year on protecting and restoring the world’s forests. Wetlands are just as important, yet don’t get anything like the same recognition or investment. That, scientists insist, has to change. And Europe can lead the way.

For forests, the EU already provides financial and technical assistance for a series of Forest Partnerships with non-EU countries, as part of its Global Gateway strategy for investing globally in environmentally and socially sustainable infrastructure. Such partnerships operate in Guyana, the Democratic Republic of the Congo, Mongolia and elsewhere.

I believe the time is now right to establish a parallel EU Wetland Partnerships, framing wetlands as a strategic, cost-effective investment offering high financial, environmental and social returns.

Wetlands store a third of global soil carbon

Wetlands come in many shapes and sizes: freshwater peatlands, lakes and river floodplains, as well as coastal salt marshes, mangroves and seagrass beds. They are vital natural infrastructure, maintaining river flows that buffer against extreme weather events such as floods and drought, as well as protecting biodiversity, and providing jobs and economic opportunities, often for the most vulnerable nature-dependent communities.

Wetlands cover just six percent of the land surface, but store a third of global soil carbon – twice the amount in all the world’s forests. Yet they have been disappearing three times faster than forests, with 35 percent lost in the past half century.

A just agricultural transition takes root in Brazil

Their loss adds to climate change, causes species extinction, triggers mass exoduses of fishers and other people whose livelihoods disappear, and depletes both surface and underground water reserves. Continued wetlands destruction is estimated to contribute five percent of global CO2 emissions – more than aviation and shipping combined.

EU Wetland Partnerships can be critical to unlocking finance to stem the losses and realise the benefits by promoting nature-based economic development, such as sustainable aquaculture, eco-tourism, and forms of wetlands agriculture known as paludiculture, while contributing to climate adaptation by improving the resilience of water resources.

Pantanal faces multiple threats

The Pantanal would be a prime candidate for a flagship project. The vast seasonal floodplain stretching from Brazil into Paraguay and Bolivia, is home to abundant populations of cayman, capybaras, jaguars and more than 600 species of birds. It is vital also for preventing flooding on the River Paraguay for some 2000 kilometres downstream to the Atlantic Ocean.

The Pantanal faces multiple threats, from droughts due to upstream water diversions and climate change, invasions by farmers setting fires and a megaproject to dredge the river and create a shipping corridor through the wetland.

But EU investment to achieve partnership targets agreed with Brazil on restoration, conservation and sustainable management could reinvigorate traditional sustainable land use – including cattle ranching that helps sustain the Pantanal’s open flooded grasslands.

A delegation from the Pantanal Association for Organic and Sustainable Livestock Farming, pictured in the Pantanal wetland, Mato Grosso do Sul, Brazil. (Photo: Wetlands International Brazil office)

A delegation from the Pantanal Association for Organic and Sustainable Livestock Farming, pictured in the Pantanal wetland, Mato Grosso do Sul, Brazil. (Photo: Wetlands International Brazil office)

Accounting for wetlands carbon in national emissions targets

Africa, a main focus of the Global Gateway, has abundant potential for early partnership initiatives. They include the Inner Niger Delta in Mali, which sustains some three million inhabitants, but is threatened by upstream dams and conflicts over resources between farmers and herders.

Another is the Sango Bay-Minziro wetland, a region of swamp forests, flooded grasslands and papyrus swamp straddling the border between Uganda and Tanzania on the shores of Lake Victoria, Africa’s largest lake.

The two countries have agreed to cooperate in pushing back against illegal logging, papyrus extraction and farming, and Wetlands International has been working with local governments to encourage community-based initiatives. But an EU partnership could dramatically expand this work, helping sustain the wider ecology of Lake Victoria and the Nile Basin.

Deep in the Amazon, forest protection cash must vie with glitter of illegal gold

National pledges to bring wetlands to the fore of environmental action are proliferating rapidly, especially since the 2023 global climate stocktake at COP28 in the UAE emphasised the importance of accounting for wetlands carbon in national emissions targets.

Since then, more than 50 countries have signed up to the 2023 Freshwater Challenge to protect freshwater ecosystems; more than 40 governments with 40 percent of the world’s mangroves have endorsed the 2022 Mangrove Breakthrough that aims to protect and restore 15 million hectares by 2030; and the newly established Peatland Breakthrough aims at rewetting at least 30 million hectares and halting the loss of undrained peatland by 2030.

Such ambition will almost certainly be endorsed at the 2026 UN Water Conference to be hosted by the UAE and Senegal in December this year. But the key to turning targets into reality on the ground lies in finding the billions of Euros needed to deliver on the ambition. EU Wetlands Partnerships could help seal the deal.

The post The EU should partner with Global South to protect carbon-storing wetlands appeared first on Climate Home News.

The EU should partner with Global South to protect carbon-storing wetlands

Continue Reading

Climate Change

DeBriefed 30 January 2026:  Fire and ice; US formally exits Paris; Climate image faux pas

Published

on

Welcome to Carbon Brief’s DeBriefed.
An essential guide to the week’s key developments relating to climate change.

This week

Fire and ice

OZ HEAT: The ongoing heatwave in Australia reached record-high temperatures of almost 50C earlier this week, while authorities “urged caution as three forest fires burned out of control”, reported the Associated Press. Bloomberg said the Australian Open tennis tournament “rescheduled matches and activated extreme-heat protocols”. The Guardian reported that “the climate crisis has increased the frequency and severity of extreme weather events, including heatwaves and bushfires”.

WINTER STORM: Meanwhile, a severe winter storm swept across the south and east of the US and parts of Canada, causing “mass power outages and the cancellation of thousands of flights”, reported the Financial Times. More than 870,000 people across the country were without power and at least seven people died, according to BBC News.

COLD QUESTIONED: As the storm approached, climate-sceptic US president Donald Trump took to social media to ask facetiously: “Whatever happened to global warming???”, according to the Associated Press. There is currently significant debate among scientists about whether human-caused climate change is driving record cold extremes, as Carbon Brief has previously explained.

Around the world

  • US EXIT: The US has formally left the Paris Agreement for the second time, one year after Trump announced the intention to exit, according to the Guardian. The New York Times reported that the US is “the only country in the world to abandon the international commitment to slow global warming”.
  • WEAK PROPOSAL: Trump officials have delayed the repeal of the “endangerment finding” – a legal opinion that underpins federal climate rules in the US – due to “concerns the proposal is too weak to withstand a court challenge”, according to the Washington Post
  • DISCRIMINATION: A court in the Hague has ruled that the Dutch government “discriminated against people in one of its most vulnerable territories” by not helping them to adapt to climate change, reported the Guardian. The court ordered the Dutch government to set binding targets within 18 months to cut greenhouse gas emissions in line with the Paris Agreement, according to the Associated Press.
  • WIND PACT: 10 European countries have agreed a “landmark pact” to “accelerate the rollout of offshore windfarms in the 2030s and build a power grid in the North Sea”, according to the Guardian
  • TRADE DEAL: India and the EU have agreed on the “mother of all trade deals”, which will save up to €4bn in import duty, reported the Hindustan Times. Reuters quoted EU officials saying that the landmark trade deal “will not trigger any changes” to the bloc’s carbon border adjustment mechanism.
  • ‘TWO-TIER SYSTEM’: COP30 president André Corrêa do Lago believes that global cooperation should move to a “two-speed system, where new coalitions lead fast, practical action alongside the slower, consensus-based decision-making of the UN process”, according to a letter published on Tuesday, reported Climate Home News

$2.3tn

The amount invested in “green tech” globally in 2025, marking a new record high, according to Bloomberg.


Latest climate research

  • Including carbon emissions from permafrost thaw and fires reduces the remaining carbon budget for limiting warming to 1.5C by 25% | Communications Earth & Environment 
  • The global population exposed to extreme heat conditions is projected to nearly double if temperatures reach 2C | Nature Sustainability
  • Polar bears in Svalbard – the fastest-warming region on Earth – are in better condition than they were a generation ago, as melting sea ice makes seal pups easier to reach | Scientific Reports

(For more, see Carbon Brief’s in-depth daily summaries of the top climate news stories on Monday, Tuesday, Wednesday, Thursday and Friday.)

Captured

EV sales just overtook petrol cars in EU for the first time. Chart shows monthly new passenger card registrations in the EU.

Sales of electric vehicles (EVs) overtook standard petrol cars in the EU for the first time in December 2025, according to new figures released by the European Automobile Manufacturers’ Association (ACEA) and covered by Carbon Brief. Registrations of “pure” battery EVs reached 217,898 – up 51% year-on-year from December 2024. Meanwhile, sales of standard petrol cars in the bloc fell 19% year-on-year, from 267,834 in December 2024 to 216,492 in December 2025, according to the analysis.

Spotlight

Looking at climate visuals

Carbon Brief’s Ayesha Tandon recently chaired a panel discussion at the launch of a new book focused on the impact of images used by the media to depict climate change.

When asked to describe an image that represents climate change, many people think of polar bears on melting ice or devastating droughts.

But do these common images – often repeated in the media – risk making climate change feel like a far-away problem from people in the global north? And could they perpetuate harmful stereotypes?

These are some of the questions addressed in a new book by Prof Saffron O’Neill, who researches the visual communication of climate change at the University of Exeter.

The Visual Life of Climate Change” examines the impact of common images used to depict climate change – and how the use of different visuals might help to effect change.

At a launch event for her book in London, a panel of experts – moderated by Carbon Brief’s Ayesha Tandon – discussed some of the takeaways from the book and the “dos and don’ts” of climate imagery.

Power of an image

“This book is about what kind of work images are doing in the world, who has the power and whose voices are being marginalised,” O’Neill told the gathering of journalists and scientists assembled at the Frontline Club in central London for the launch event.

O’Neill opened by presenting a series of climate imagery case studies from her book. This included several examples of images that could be viewed as “disempowering”.

For example, to visualise climate change in small island nations, such as Tuvalu or Fiji, O’Neill said that photographers often “fly in” to capture images of “small children being vulnerable”. She lamented that this narrative “misses the stories about countries like Tuvalu that are really international leaders in climate policy”.

Similarly, images of power-plant smoke stacks, often used in online climate media articles, almost always omit the people that live alongside them, “breathing their pollution”, she said.

Ayesha Tandon with panellists at London’s Frontline Club. Credit: Carbon Brief
Ayesha Tandon with panellists at London’s Frontline Club. Credit: Carbon Brief

During the panel discussion that followed, panellist Dr James Painter – a research associate at the Reuters Institute for the Study of Journalism and senior teaching associate at the University of Oxford’s Environmental Change Institute – highlighted his work on heatwave imagery in the media.

Painter said that “the UK was egregious for its ‘fun in the sun’ imagery” during dangerous heatwaves.

He highlighted a series of images in the Daily Mail in July 2019 depicting people enjoying themselves on beaches or in fountains during an intense heatwave – even as the text of the piece spoke to the negative health impacts of the heatwave.

In contrast, he said his analysis of Indian media revealed “not one single image of ‘fun in the sun’”.

Meanwhile, climate journalist Katherine Dunn asked: “Are we still using and abusing the polar bear?”. O’Neill suggested that polar bear images “are distant in time and space to many people”, but can still be “super engaging” to others – for example, younger audiences.

Panellist Dr Rebecca Swift – senior vice president of creative at Getty images – identified AI-generated images as “the biggest threat that we, in this space, are all having to fight against now”. She expressed concern that we may need to “prove” that images are “actually real”.

However, she argued that AI will not “win” because, “in the end, authentic images, real stories and real people are what we react to”.

When asked if we expect too much from images, O’Neill argued “we can never pin down a social change to one image, but what we can say is that images both shape and reflect the societies that we live in”. She added:

“I don’t think we can ask photos to do the work that we need to do as a society, but they certainly both shape and show us where the future may lie.”

Watch, read, listen

UNSTOPPABLE WILDFIRES: “Funding cuts, conspiracy theories and ‘powder keg’ pine plantations” are making Patagonia’s wildfires “almost impossible to stop”, said the Guardian.

AUDIO SURVEY: Sverige Radio has published “the world’s, probably, longest audio survey” – a six-hour podcast featuring more than 200 people sharing their questions around climate change.

UNDERSTAND CBAM: European thinktank Bruegel released a podcast “all about” the EU’s carbon adjustment border mechanism, which came into force on 1 January.

Coming up

Pick of the jobs

DeBriefed is edited by Daisy Dunne. Please send any tips or feedback to debriefed@carbonbrief.org.

This is an online version of Carbon Brief’s weekly DeBriefed email newsletter. Subscribe for free here.

The post DeBriefed 30 January 2026:  Fire and ice; US formally exits Paris; Climate image faux pas appeared first on Carbon Brief.

DeBriefed 30 January 2026:  Fire and ice; US formally exits Paris; Climate image faux pas

Continue Reading

Climate Change

Factcheck: What it really costs to heat a home in the UK with a heat pump

Published

on

Electric heat pumps are set to play a key role in the UK’s climate strategy, as well as cutting the nation’s reliance on imported fossil fuels.

Heat pumps took centre-stage in the UK government’s recent “warm homes plan”, which said that they could also help cut household energy bills by “hundreds of pounds” a year.

Similarly, innovation agency Nesta estimates that typical households could cut their annual energy bills nearly £300 a year, by switching from a gas boiler to a heat pump.

Yet there has been widespread media coverage in the Times, Sunday Times, Daily Express, Daily Telegraph and elsewhere of a report claiming that heat pumps are “more expensive” to run.

The report is from the Green Britain Foundation set up by Dale Vince, owner of energy firm Ecotricity, who campaigns against heat pumps and invests in “green gas” as an alternative.

One expert tells Carbon Brief that Vince’s report is based on “flimsy data”, while another says that it “combines a series of worst-case assumptions to present an unduly pessimistic picture”.

This factcheck explains how heat pumps can cut bills, what the latest data shows about potential savings and how this information was left out of the report from Vince’s foundation.

How heat pumps can cut bills

Heat pumps use electricity to move heat – most commonly from outside air – to the inside of a building, in a process that is similar to the way that a fridge keeps its contents cold.

This means that they are highly efficient, adding three or four units of heat to the house for each unit of electricity used. In contrast, a gas boiler will always supply less than one unit of heat from each unit of gas that it burns, because some of the energy is lost during combustion.

This means that heat pumps can keep buildings warm while using three, four or even five times less energy than a gas boiler. This cuts fossil-fuel imports, reducing demand for gas by at least two-fifths, even in the unlikely scenario that all of the electricity they need is gas-fired.

Simon Evans on BlueSky (@drsimevans.carbonbrief.org): "Going slow on heat pumps could mean UK consumers having to pay an extra £3bn for imported gas 2026-2030, says Energy UK Says UK govt foot-dragging is "increasing costs for energy customers & hampering future system planning"

Since UK electricity supplies are now the cleanest they have ever been, heat pumps also cut the carbon emissions associated with staying warm by around 85%, relative to a gas boiler.

Heat pumps are, therefore, the “central” technology for cutting carbon emissions from buildings.

While heat pumps cost more to install than gas boilers, the UK government’s recent “warm homes plan” says that they can help cut energy bills by “hundreds of pounds” per year.

Similarly, Nesta published analysis showing that a typical home could cut its annual energy bill by £280, if it replaces a gas boiler with a heat pump, as shown in the figure below.

Nesta and the government plan say that significantly larger savings are possible if heat pumps are combined with other clean-energy technologies, such as solar and batteries.

Chart showing that clean electric tech could save households £1,000 a year, compared to gas boilers
Annual energy bill savings (£) for a typical household from April 2026, by using different clean-energy technologies in comparison with a gas boiler. Source: Nesta analysis, using data from Ofgem, the Centre for Net Zero and an Octopus Energy tariff.

Both the government and Nesta’s estimates of bill savings from switching to a heat pump rely on relatively conservative assumptions.

Specifically, the government assumes that a heat pump will deliver 2.8 units of heat for each unit of electricity, on average. This is known as the “seasonal coefficient of performance” (SCoP).

This figure is taken from the government-backed “electrification of heat” trial, which ran during 2020-2022 and showed that heat pumps are suitable for all building types in the UK.

(The Green Britain Foundation report and Vince’s quotes in related coverage repeat a number of heat pump myths, such as the idea that they do not perform well in older properties and require high levels of insulation.)

Nesta assumes a slightly higher SCoP of 3.0, says Madeleine Gabriel, the organisation’s director of sustainable future. (See below for more on what the latest data says about SCoP in recent installations.)

Both the government and Nesta assume that a home with a heat pump would disconnect from the gas grid, meaning that it would no longer need to pay the daily “standing charge” for gas. This currently amounts to a saving of around £130 per year.

Finally, they both consider the impact of a home with a heat pump using a “smart tariff”, where the price of electricity varies according to the time of day.

Such tariffs are now widely available from a variety of energy suppliers and many have been designed specifically for homes that have a heat pump.

Such tariffs significantly reduce the average price for a unit of electricity. Government survey data suggests that around half of heat-pump owners already use such tariffs.

This is important because on the standard rates under the price cap set by energy regulator Ofgem, each unit of electricity costs more than four times as much as a unit of gas.

The ratio between electricity and gas prices is a key determinant of the size and potential for running-cost savings with a heat pump. Countries with a lower electricity-to-gas price ratio consistently see much higher rates of heat-pump adoption.

(Decisions taken by the UK government in its 2025 budget mean that the electricity-to-gas ratio will fall from April, but current forecasts suggest it will remain above four-to-one.)

In contrast, Vince’s report assumes that gas boilers are 90% efficient, whereas data from real homes suggests 85% is more typical. It also assumes that homes with heat pumps remain on the gas grid, paying the standing charge, as well as using only a standard electricity tariff.

Prof Jan Rosenow, energy programme leader at the University of Oxford’s Environmental Change Institute, tells Carbon Brief that Vince’s report uses “worst-case assumptions”. He says:

“This report cherry-picks assumptions to reach a predetermined conclusion. Most notably, it assumes a gas boiler efficiency of 90%, which is significantly higher than real-world performance…Taken together, the analysis combines a series of worst-case assumptions to present an unduly pessimistic picture.”

Similarly, Gabriel tells Carbon Brief that Vince’s report is based on “flimsy data”. She explains:

“Dale Vince has drawn some very strong conclusions about heat pumps from quite flimsy data. Like Dale, we’d also like to see electricity prices come down relative to gas, but we estimate that, from April, even a moderately efficient heat pump on a standard tariff will be cheaper to run than a gas boiler. Paired with a time-of-use tariff, a heat pump could save £280 versus a boiler and adding solar panels and a battery could triple those savings.”

What the latest data shows about bill savings

The efficiency of heat-pump installations is another key factor in the potential bill savings they can deliver and, here, both the government and Vince’s report take a conservative approach.

They rely on the “electrification of heat” trial data to use an efficiency (SCoP) of 2.8 for heat pumps. However, Rosenow says that recent evidence shows that “substantially higher efficiencies are routinely available”, as shown in the figure below.

Detailed, real-time data on hundreds of heat pump systems around the UK is available via the website Heat Pump Monitor, where the average efficiency – a SCoP of 3.9 – is much higher.

Charts showing that recent heat-pump installations tend to be far more efficient
Number of installations by heat pump efficiency, in the electrification of heat trial (left) and on the website Heat Pump Monitor (right). An efficiency of three means that each unit of electricity delivers three units of heat, on average, across a year. Source: Heat Pump Monitor.

Homes with such efficient heat-pump installations would see even larger bill savings than suggested by the government and Nesta estimates.

Academic research suggests that there are simple and easy-to-implement reasons why these systems achieve much higher efficiency levels than in the electrification of heat trial.

Specifically, it shows that many of the systems in the trial have poor software settings, which means they do not operate as efficiently as their heat pump hardware is capable of doing.

The research suggests that heat pump installations in the UK have been getting more and more efficient over time, as engineers become increasingly familiar with the technology.

It indicates that recently installed heat pumps are 64% more efficient than those in early trials.

Jan Rosenow on BlueSky (@janrosenow.bsky.social): "Well-installed heat pumps installed in the UK today achieve on average a 64% higher efficiency than those during the early trials 15 years ago. It is testament to the brilliant installers and to the technology getting better. More in our recent paper"

Notably, the Green Britain Foundation report only refers to the trial data from the electrification of heat study carried out in 2020-22 and the even earlier “renewable heat premium package” (RHPP). This makes a huge difference to the estimated running costs of a heat pump.

Carbon Brief analysis suggests that a typical household could cut its annual energy bills by nearly £200 with a heat pump – even on a standard electricity tariff – if the system has a SCoP of 3.9.

The savings would be even larger on a smart heat-pump tariff.

In contrast, based on the oldest efficiency figures mentioned in the Green Britain Foundation report, a heat pump could increase annual household bills by as much as £200 on a standard tariff.

To support its conclusions, the report also includes the results of a survey of 1,001 heat pump owners, which, among other things, is at odds with government survey data. The report says “66% of respondents report that their homes are more expensive to heat than the previous system”.

There are several reasons to treat these findings with caution. The survey was carried out in July 2025 and some 45% of the heat pumps involved were installed between 2021-23.

This is a period during which energy prices surged as a result of Russia’s invasion of Ukraine and the resulting global energy crisis. Energy bills remain elevated as a result of high gas prices.

The wording of the survey question asks if homes are “more or less expensive to heat than with your previous system” – but makes no mention of these price rises.

The question does not ask homeowners if their bills are higher today, with a heat pump, than they would have been with the household’s previous heating system.

If respondents interpreted the question as asking whether their bills have gone up or down since their heat pump was installed, then their answers will be confounded by the rise in prices overall.

There are a number of other seemingly contradictory aspects of the survey that raise questions about its findings and the strong conclusions in the media coverage of the report.

For example, while only 15% of respondents say it is cheaper to heat their home with a heat pump, 49% say that one of the top three advantages of the system is saving money on energy bills.

In addition, 57% of respondents say they still have a boiler, even though 67% say they received government subsidies for their heat-pump installation. It is a requirement of the government’s boiler upgrade scheme (BUS) grants that homeowners completely remove their boiler.

The government’s own survey of BUS recipients finds that only 13% of respondents say their bills have gone up, whereas 37% say their bills have gone down, another 13% say they have stayed the same and 8% thought that it was too early to say.

The post Factcheck: What it really costs to heat a home in the UK with a heat pump appeared first on Carbon Brief.

Factcheck: What it really costs to heat a home in the UK with a heat pump

Continue Reading

Trending

Copyright © 2022 BreakingClimateChange.com