The UK’s energy bills were £22bn higher over the past decade than they would have been if Conservative governments had not cut “green crap” climate policies.
In 2013, then-prime minister David Cameron was infamously reported to have asked colleagues to “get rid of the green crap”, referring to climate policies supporting better home insulation.
His government later scrapped a “zero-carbon homes” (ZCH) standard for new-build homes, ended support for solar power and blocked the expansion of onshore wind.
The number of homes getting insulated each year is now 98% below 2012 levels, while the growth of onshore wind and solar remains far below previous peaks.
Carbon Brief’s new analysis updates figures published in January 2022, showing that the “green crap” rollbacks left UK billpayers more exposed to record gas prices during the energy crisis.
The £22bn added to energy bills since 2015 as a result of the rollbacks includes £9bn due to not having built more cheap onshore wind, £5bn due to poorly insulated homes, £5bn due to low solar deployment and another £3bn because new homes were less efficient than the ZCH standard.
In total, the UK’s gas demand is 99 terawatt hours (TWh, 14%) higher than it would have been if climate measures had been added at earlier rates, the analysis shows. This means the UK’s net gas imports are 31% higher than they would have been with more “green crap” in place.
‘Green crap’ cuts
In November 2013, a Sun frontpage reported then-prime minister David Cameron’s “solution to soaring energy price[s]” with the headline: “Get rid of the green crap.”
Cameron’s government, in coalition with the Liberal Democrats, went on to make a series of changes, including cutting spending on energy-efficiency improvements and introducing the “green deal” efficiency scheme, later described by the National Audit Office as a “fail[ure]”.
The number of homes getting their lofts or cavity walls insulated each year plummeted almost immediately – by 92% and 74% in 2013, respectively – and has never recovered.
As of the latest figures for 2023, the number of homes getting these basic insulation measures each year is 98% lower than in 2012, as shown in the figure below.
If measures had continued to be added at the rate seen in 2012, an extra 7.9m lofts and 5.1m cavity walls would have been insulated by this year, leaving virtually no homes in the UK untreated.
In 2015, the Conservative administration then ended subsidies for onshore wind and introduced planning reforms in England that, together, were widely viewed as a “ban” on the technology.
Following a grace period for projects then already in the pipeline, the capacity of onshore windfarms being completed in the UK each year dropped dramatically after 2017, as shown below.
If onshore wind deployment had continued at the same rate as in 2017 then there would have been an extra 9.3 gigawatts (GW) of capacity by the end of this year.
Similarly, if solar deployment had continued at 2014 levels – which was well below the record rate in 2015 – then there would have been an extra 15GW in place by the end of this year.
Finally, the Conservative government in 2015 also scrapped the zero-carbon homes standard, which had been due to come into force the following year. As a result, around 1.6m new homes have been built since then with lower energy-efficiency standards – and higher energy bills.
Higher bills
The impact on bills depends on the cost of electricity and gas under the domestic price cap. The cap surged in 2022 after Russia’s invasion of Ukraine and its decision to restrict gas flows to Europe.
While the price cap has fallen, it remains well above pre-crisis levels.
These changes are reflected in the figure below, which shows how much higher energy bills are as a result of having installed less insulation and fewer wind or solar parks.
Looking back over the past decade, getting rid of the “green crap” has added £22bn to UK bills, of which £19bn (84%) has come since the global energy crisis triggered by Russia.
In terms of gas demand, the UK’s less-well insulated homes now burn an extra 22TWh of gas each year, compared with what they would have needed if more “green crap” had been installed.
Similarly, the UK needs to burn an extra 77TWh of gas per year to generate electricity that would otherwise have come from additional onshore wind and solar capacity.
The estimated extra gas needed in 2024 – some 99TWh – is around 14% of the UK’s annual gas demand. Moreover, the additional demand due to getting rid of “green crap” means the UK’s net gas imports are 31% higher than they would have been, at 315TWh instead of 216TWh.
Methodology
Carbon Brief’s analysis of the impact of having got rid of the “green crap” is based on a series of assumptions about what would have happened if those policy measures had remained in place.
It aggregates the impact in terms of kilowatt hours (kWh) of gas that would have been saved by homes across the UK, relative to current domestic demand, as well as the amount and price of electricity that would have been generated from extra onshore wind or solar parks.
The analysis assumes loft and cavity wall insulation would have been added at the rate seen in 2012. Under this assumption, all remaining uninsulated lofts – and most cavity walls – would have been insulated by this year.
The analysis assumes that homes insulating their lofts or cavity walls would have reduced their gas usage from typical levels, by 6% or 12% respectively, based on analysis from University College London for the Climate Change Committee (CCC).
This gives similar figures, in terms of kilowatt hours (kWh) of gas saved, to the National Energy Efficiency Data-Framework (NEED), which reports the actual impact of home improvements in a sample of thousands of properties.
The analysis for the ZCH standard is based on figures for the actual energy use and floor area of new homes from the Home Builders Federation. This is compared with the recommended energy use per square metre under the standard, if it had been introduced.
Figures for energy use per home are combined with Office for National Statistics (ONS) figures on the number of homes built since 2016, when the standard was due to have come into effect.
The estimate for onshore wind assumes new capacity would have continued to be added at the same rate as in 2017, when 1.8GW was built. In total, this would have meant an extra 9.3GW being built by the end of 2024.
This capacity is assumed to have generated electricity at a load factor of 31% and cost of £46 per megawatt hour (MWh) in 2012 prices, based on a 2017 report from consultancy Baringa. The cost was converted to current prices using the Treasury GDP deflator.
(This is a conservative assumption for load factors. The UK fleet-wide onshore wind load factor is 26%, but newer wind turbines are larger and have higher load factors. The Department of Energy and Net Zero assumes new onshore windfarms have a load factor of 49%.)
The estimate for solar assumes new capacity would have continued to be added at the same rate as in 2014, when 2.6GW was built. This is below the peak year in 2015, when 4.1GW was added.
This would have meant an extra 15GW being built by the end of 2024. This capacity is assumed to have generated electricity at a load factor of 10% and at the same cost as onshore wind.
The energy savings and cheaper electricity that would have occurred with the “green crap” in place is converted to bill impacts in each year, based on the current and previous price cap levels, unit costs and implied wholesale electricity prices.
The post Analysis: Cutting the ‘green crap’ has added £22bn to UK energy bills since 2015 appeared first on Carbon Brief.
Analysis: Cutting the ‘green crap’ has added £22bn to UK energy bills since 2015
Climate Change
DeBriefed 15 August 2025: Raging wildfires; Xi’s priorities; Factchecking the Trump climate report
Welcome to Carbon Brief’s DeBriefed.
An essential guide to the week’s key developments relating to climate change.
This week
Blazing heat hits Europe
FANNING THE FLAMES: Wildfires “fanned by a heatwave and strong winds” caused havoc across southern Europe, Reuters reported. It added: “Fire has affected nearly 440,000 hectares (1,700 square miles) in the eurozone so far in 2025, double the average for the same period of the year since 2006.” Extreme heat is “breaking temperature records across Europe”, the Guardian said, with several countries reporting readings of around 40C.
HUMAN TOLL: At least three people have died in the wildfires erupting across Spain, Turkey and Albania, France24 said, adding that the fires have “displaced thousands in Greece and Albania”. Le Monde reported that a child in Italy “died of heatstroke”, while thousands were evacuated from Spain and firefighters “battled three large wildfires” in Portugal.
UK WILDFIRE RISK: The UK saw temperatures as high as 33.4C this week as England “entered its fourth heatwave”, BBC News said. The high heat is causing “nationally significant” water shortfalls, it added, “hitting farms, damaging wildlife and increasing wildfires”. The Daily Mirror noted that these conditions “could last until mid-autumn”. Scientists warn the UK faces possible “firewaves” due to climate change, BBC News also reported.
Around the world
- GRID PRESSURES: Iraq suffered a “near nationwide blackout” as elevated power demand – due to extreme temperatures of around 50C – triggered a transmission line failure, Bloomberg reported.
- ‘DIRE’ DOWN UNDER: The Australian government is keeping a climate risk assessment that contains “dire” implications for the continent “under wraps”, the Australian Financial Review said.
- EXTREME RAINFALL: Mexico City is “seeing one of its heaviest rainy seasons in years”, the Washington Post said. Downpours in the Japanese island of Kyushu “caused flooding and mudslides”, according to Politico. In Kashmir, flash floods killed 56 and left “scores missing”, the Associated Press said.
- SOUTH-SOUTH COOPERATION: China and Brazil agreed to “ensure the success” of COP30 in a recent phone call, Chinese state news agency Xinhua reported.
- PLASTIC ‘DEADLOCK’: Talks on a plastic pollution treaty have failed again at a summit in Geneva, according to the Guardian, with countries “deadlocked” on whether it should include “curbs on production and toxic chemicals”.
15
The number of times by which the most ethnically-diverse areas in England are more likely to experience extreme heat than its “least diverse” areas, according to new analysis by Carbon Brief.
Latest climate research
- As many as 13 minerals critical for low-carbon energy may face shortages under 2C pathways | Nature Climate Change
- A “scoping review” examined the impact of climate change on poor sexual and reproductive health and rights in sub-Saharan Africa | PLOS One
- A UK university cut the carbon footprint of its weekly canteen menu by 31% “without students noticing” | Nature Food
(For more, see Carbon Brief’s in-depth daily summaries of the top climate news stories on Monday, Tuesday, Wednesday, Thursday and Friday.)
Captured
Factchecking Trump’s climate report
A report commissioned by the US government to justify rolling back climate regulations contains “at least 100 false or misleading statements”, according to a Carbon Brief factcheck involving dozens of leading climate scientists. The report, compiled in two months by five hand-picked researchers, inaccurately claims that “CO2-induced warming might be less damaging economically than commonly believed” and misleadingly states that “excessively aggressive [emissions] mitigation policies could prove more detrimental than beneficial”80
Spotlight
Does Xi Jinping care about climate change?
This week, Carbon Brief unpacks new research on Chinese president Xi Jinping’s policy priorities.
On this day in 2005, Xi Jinping, a local official in eastern China, made an unplanned speech when touring a small village – a rare occurrence in China’s highly-choreographed political culture.
In it, he observed that “lucid waters and lush mountains are mountains of silver and gold” – that is, the environment cannot be sacrificed for the sake of growth.
(The full text of the speech is not available, although Xi discussed the concept in a brief newspaper column – see below – a few days later.)
In a time where most government officials were laser-focused on delivering economic growth, this message was highly unusual.
Forward-thinking on environment
As a local official in the early 2000s, Xi endorsed the concept of “green GDP”, which integrates the value of natural resources and the environment into GDP calculations.
He also penned a regular newspaper column, 22 of which discussed environmental protection – although “climate change” was never mentioned.
This focus carried over to China’s national agenda when Xi became president.
New research from the Asia Society Policy Institute tracked policies in which Xi is reported by state media to have “personally” taken action.
It found that environmental protection is one of six topics in which he is often said to have directly steered policymaking.
Such policies include guidelines to build a “Beautiful China”, the creation of an environmental protection inspection team and the “three-north shelterbelt” afforestation programme.
“It’s important to know what Xi’s priorities are because the top leader wields outsized influence in the Chinese political system,” Neil Thomas, Asia Society Policy Institute fellow and report co-author, told Carbon Brief.
Local policymakers are “more likely” to invest resources in addressing policies they know have Xi’s attention, to increase their chances for promotion, he added.
What about climate and energy?
However, the research noted, climate and energy policies have not been publicised as bearing Xi’s personal touch.
“I think Xi prioritises environmental protection more than climate change because reducing pollution is an issue of social stability,” Thomas said, noting that “smoggy skies and polluted rivers” were more visible and more likely to trigger civil society pushback than gradual temperature increases.
The paper also said topics might not be linked to Xi personally when they are “too technical” or “politically sensitive”.
For example, Xi’s landmark decision for China to achieve carbon neutrality by 2060 is widely reported as having only been made after climate modelling – facilitated by former climate envoy Xie Zhenhua – showed that this goal was achievable.
Prior to this, Xi had never spoken publicly about carbon neutrality.
Prof Alex Wang, a University of California, Los Angeles professor of law not involved in the research, noted that emphasising Xi’s personal attention may signal “top” political priorities, but not necessarily Xi’s “personal interests”.
By not emphasising climate, he said, Xi may be trying to avoid “pushing the system to overprioritise climate to the exclusion of the other priorities”.
There are other ways to know where climate ranks on the policy agenda, Thomas noted:
“Climate watchers should look at what Xi says, what Xi does and what policies Xi authorises in the name of the ‘central committee’. Is Xi talking more about climate? Is Xi establishing institutions and convening meetings that focus on climate? Is climate becoming a more prominent theme in top-level documents?”
Watch, read, listen
TRUMP EFFECT: The Columbia Energy Exchange podcast examined how pressure from US tariffs could affect India’s clean energy transition.
NAMIBIAN ‘DESTRUCTION’: The National Observer investigated the failure to address “human rights abuses and environmental destruction” claims against a Canadian oil company in Namibia.
‘RED AI’: The Network for the Digital Economy and the Environment studied the state of current research on “Red AI”, or the “negative environmental implications of AI”.
Coming up
- 17 August: Bolivian general elections
- 18-29 August: Preparatory talks on the entry into force of the “High Seas Treaty”, New York
- 18-22 August: Y20 Summit, Johannesburg
- 21 August: Advancing the “Africa clean air programme” through Africa-Asia collaboration, Yokohama
Pick of the jobs
- Lancaster Environment Centre, senior research associate: JUST Centre | Salary: £39,355-£45,413. Location: Lancaster, UK
- Environmental Justice Foundation, communications and media officer, Francophone Africa | Salary: XOF600,000-XOF800,000. Location: Dakar, Senegal
- Politico, energy & climate editor | Salary: Unknown. Location: Brussels, Belgium
- EnviroCatalysts, meteorologist | Salary: Unknown. Location: New Delhi, India
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 15 August 2025: Raging wildfires; Xi’s priorities; Factchecking the Trump climate report appeared first on Carbon Brief.
DeBriefed 15 August 2025: Raging wildfires; Xi’s priorities; Factchecking the Trump climate report
Climate Change
New York Already Denied Permits to These Gas Pipelines. Under Trump, They Could Get Greenlit
The specter of a “gas-for-wind” compromise between the governor and the White House is drawing the ire of residents as a deadline looms.
Hundreds of New Yorkers rallied against new natural gas pipelines in their state as a deadline loomed for the public to comment on a revived proposal to expand the gas pipeline that supplies downstate New York.
New York Already Denied Permits to These Gas Pipelines. Under Trump, They Could Get Greenlit
A “critical assessment” report commissioned by the Trump administration to justify a rollback of US climate regulations contains at least 100 false or misleading statements, according to a Carbon Brief factcheck involving dozens of leading climate scientists.
The report – “A critical review of impacts of greenhouse gas emissions on the US climate” – was published by the US Department of Energy (DoE) on 23 July, just days before the government laid out plans to revoke a scientific finding used as the legal basis for emissions regulation.
The executive summary of the controversial report inaccurately claims that “CO2-induced warming might be less damaging economically than commonly believed”.
It also states misleadingly that “excessively aggressive [emissions] mitigation policies could prove more detrimental than beneficial”.
Compiled in just two months by five “independent” researchers hand-selected by the climate-sceptic US secretary of energy Chris Wright, the document has sparked fierce criticism from climate scientists, who have pointed to factual errors, misrepresentation of research, messy citations and the cherry-picking of data.
Experts have also noted the authors’ track record of promoting views at odds with the mainstream understanding of climate science.
Wright’s department claims the report – which is currently open to public comment as part of a 30-day review – underwent an “internal peer-review period amongst [the] DoE’s scientific research community”.
The report is designed to provide a scientific underpinning to one flank of the Trump administration’s plans to rescind a finding that serves as the legal prerequisite for federal emissions regulation. (The second flank is about legal authority to regulate emissions.)
The “endangerment finding” – enacted by the Obama administration in 2009 – states that six greenhouse gases are contributing to the net-negative impacts of climate change and, thus, put the public in danger.
In a press release on 29 July, the US Environmental Protection Agency said “updated studies and information” set out in the new report would “challenge the assumptions” of the 2009 finding.
Carbon Brief asked a wide range of climate scientists, including those cited in the “critical review” itself, to factcheck the report’s various claims and statements.
The post Factcheck: Trump’s climate report includes more than 100 false or misleading claims appeared first on Carbon Brief.
https://www.carbonbrief.org/factcheck-trumps-climate-report-includes-more-than-100-false-or-misleading-claims/
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