The Net Zero Delusion: Why Britain Is Paying a Vast Price for a Policy That Cannot Work and Would Not Matter Even If It Did
There is a particular kind of political dishonesty that is worse than an outright lie. The outright lie at least requires the liar to know the truth. What Britain has been doing with net zero for the better part of a decade is something more insidious: a collective performance of seriousness, dressed in the language of science and moral urgency, that falls apart the moment you apply arithmetic to it. The targets are not being met. The infrastructure to meet them does not exist. The technologies the plan depends on have not materialised. The public that never really consented to the project is quietly withdrawing what limited support it once gave. And underneath all of it, unaddressed by any minister of any party, is the foundational question that the whole edifice is built to avoid: even if Britain somehow pulled it off, what exactly would it achieve for the global climate?
The honest answer is: nothing measurable. The UK produces roughly 0.7 per cent of the world's greenhouse gas emissions. The European Commission's EDGAR database recorded global emissions of 53.2 gigatonnes of CO2-equivalent in 2024 - a record high. Britain's contribution to that figure is around 371 million tonnes on the government's own territorial accounting. The arithmetic does not require a calculator. If the United Kingdom vanished from the planet tomorrow - every car, every boiler, every factory and power station silenced simultaneously - the gap would be filled by Chinese growth alone within a matter of months. China's emissions are running at around 12.6 gigatonnes per year and growing. India's grew by 5.3 per cent in 2024, the highest rate of any major economy. Both countries are building coal capacity at speeds that make British newspaper coverage of a new solar farm look like what it is: a distraction.
The numbers on coal are worth sitting with, because they are so starkly at odds with the domestic conversation. According to Global Energy Monitor's tracking of coal plant development, China approved 41.77 gigawatts of new coal in the first three quarters of 2025 alone. In 2024, 94.5 gigawatts of coal capacity moved into construction in China - the highest level of construction starts since 2015. India proposed 38.4 gigawatts of new coal power in 2024, the highest annual total on record. China and India together accounted for 87 per cent of the new coal-power capacity brought into operation in the first half of 2025. To put that in context: Britain closed its last coal-fired power station in September 2024. That closure, representing the end of coal in the country that invented the industrial use of it, was accompanied by a great deal of ceremony and self-congratulation. The CO2 equivalent of that closure is replaced by Chinese and Indian coal construction in roughly four days.
The argument that is always made at this point - and which should be acknowledged before it is dismantled - is that Britain must lead by example. The idea is that a rich, historically high-emitting country demonstrating that a modern economy can decarbonise will somehow inspire or embarrass others into following. This was always more of a faith position than a strategic one, and a quarter-century into the experiment the evidence for it is essentially nil. China is not building 94 gigawatts of coal because it has not yet seen Britain's offshore wind auction results. India is not on a coal-construction record because it has not grasped the moral logic of the Climate Change Act. The developing world has a very clear-eyed understanding of what cheap energy did for the industrialisation of Europe and North America, and it is entirely rationally choosing to do the same thing. You can call that a tragedy. You cannot call it a policy failure that British net zero is going to fix.
The Trick in the Numbers
Before getting to why the policy is structurally undeliverable, it is worth understanding how the UK's much-celebrated emissions reductions have been produced. Britain has cut its territorial emissions by around 53 per cent since 1990. This is presented as evidence that decarbonisation and economic growth are compatible - that Britain has shown the world how to have both. What is less prominently presented is what the Office for National Statistics publishes alongside those figures.
The UK's territorial emissions measure only what is produced within the country's borders. The consumption-based, or footprint, measure includes the emissions embedded in everything the country imports. In 2022, the most recent year with confirmed data, the UK's territorial emissions were 405 million tonnes of CO2-equivalent. Its consumption-based emissions were 740 million tonnes - 80 per cent higher. The difference is 335 million tonnes of CO2 that Britain has effectively outsourced, mostly to countries with weaker environmental standards than those being phased out here. The ONS itself notes with quiet candour that the larger fall in territorial emissions "may be because of the UK economy moving from a manufacturing base to a service base with a greater dependence upon imports."
What this means in practice is that Britain has not so much decarbonised as deindustrialised - and then counted only the first half of the equation. The factories that used to belch smoke in Sheffield and Middlesbrough have been replaced by Amazon warehouses and estate agents and financial services firms, and the manufacturing that used to happen here now happens somewhere else, under less regulated conditions, and the emissions from that manufacturing are loaded onto container ships and carried here in the form of goods that are then counted in no one's headline number. The UK's statistics look good. The planet's statistics do not, because this particular form of carbon accounting is a way of making one country's ledger look clean by making sure the dirty entries appear in someone else's book.
The closure of Port Talbot's blast furnaces in September 2024 is the clearest single illustration of how this works. The site had been producing steel since 1902. Its closure, with around 2,800 direct jobs lost, reduced British territorial CO2 emissions by roughly 1.5 per cent. The government announced a £500 million subsidy toward an electric arc furnace replacement, due to be operational by 2027 at the earliest. During the transition, the UK imports steel - including, in part, from Tata's own Indian operations, which are run under considerably higher-carbon processes than the Port Talbot blast furnaces were. The blast furnaces at Port Talbot, though ageing, were less carbon-intensive than the overseas blast-furnace operations now filling the gap. Their closure is an outcome in which British statistics improve, British workers lose their jobs, and global emissions go up. That is what net zero's most celebrated industrial achievement looks like on close inspection.
The Carbon Border Adjustment Mechanism, which is supposed to address this by putting a price on the carbon embedded in imports, does not begin operating until January 2027, covers only a limited range of products, and will not cover indirect emissions - the carbon from the electricity used to make the goods - when it launches. It is a partial, delayed and incomplete solution to a problem that has been building for thirty years.
The Infrastructure That Does Not Exist
If the policy were working as described and the climate arithmetic were more favourable, there would still be a fundamental problem: the physical infrastructure required to deliver net zero on anything approaching the stated timeline does not exist and cannot be built in time. This is not a political opinion. It is an engineering reality, visible in the government's own data and in the documents of the National Energy System Operator.
The grid connection queue is the most damning single data point. Before emergency reforms were announced in December 2025, the queue of projects seeking connection to the electricity transmission system had grown to over 700 gigawatts. Britain needs, on the most ambitious projections, around 150 to 200 gigawatts of total generating capacity by 2030. The queue was therefore more than four times what the country requires - full of what the Energy Secretary Ed Miliband himself described as "zombie" projects holding up viable ones, with some developers being offered connection dates in the late 2030s. A reformed prioritised pipeline of 283 gigawatts was announced in December 2025 after NESO paused new transmission applications entirely in January of the same year. The problem was not lack of ambition. It was a system that had been so badly designed, with no requirement to demonstrate financial or planning viability before joining the queue, that it had become gridlocked.
Building out is not simply a matter of connecting power stations to wires. The wires themselves need to be built. The National Grid's "Great Grid Upgrade" - described as the largest overhaul of the transmission network since the 1960s - involves 17 major projects at an estimated cost of around £19 billion, and requires constructing roughly twice as much transmission network in five years as was built in the previous ten. The planned Norwich to Tilbury high-voltage line alone drew a 40,000-signature petition from rural communities opposed to new pylons. The average planning timeline for offshore wind is 21 months even without opposition, and that is before the projects are built. The Clean Power 2030 target requires offshore wind capacity to grow from around 15 gigawatts today to somewhere between 43 and 50 gigawatts. That means adding roughly 10 gigawatts per year. The historical rate, achieved under relatively favourable conditions, has been below 2 gigawatts per year.
NESO's own Clean Power 2030 plan is notable for what it admits without appearing to notice it has done so. The target is described as "achievable for Great Britain by 2030" - but only, the same document explains, if "several elements must deliver at the limit of what is feasible." This is not a plan. It is a prayer. It is an admission, dressed in neutral technical language, that the delivery requires every single component to operate at the outer edge of physical possibility simultaneously, with no margin for the kind of planning delays, supply chain problems, interest rate movements, and public opposition that have characterised every large infrastructure project in this country for decades.
And that is only the generation side of the problem. Net zero also requires electrifying 28 million homes currently heated by gas boilers and adding tens of millions of electric vehicles to a road network whose local distribution grid was not designed for them. National Grid's own projections suggest electricity demand could roughly double by 2035 once heat and transport electrify. A realistic estimate of the winter heating peak from full heat-pump deployment - around 1.7 kilowatts per home under what engineers call post-diversity peak conditions - implies adding something in the region of 40 gigawatts of new peak demand to a system currently built around a winter peak of roughly 48 gigawatts. The substations serving residential streets were not built for this. The reinforcement required is estimated to run into hundreds of billions of pounds across the distribution network, on top of the transmission upgrades.
While that infrastructure is being built - which, at current rates, will take decades rather than years - Britain is becoming structurally dependent on importing electricity from its neighbours. In 2024 the UK was a record net electricity importer: 33.4 terawatt-hours net, up 40 per cent on 2023, representing around 15 per cent of the country's total electricity supply. Around 19.5 terawatt-hours came from France - mostly French nuclear power - and 9.6 terawatt-hours from Norwegian hydro. Interconnector capacity has roughly doubled since 2020, from 4.5 gigawatts to 10.3 gigawatts. The Nuclear Industry Association's Tom Greatrex put this plainly: "Other countries get the jobs, and we get the bill because we have not invested enough in our own nuclear power and other sovereign power sources." A country that has positioned itself as a world leader in energy transition is, in practice, increasingly dependent on its neighbours' nuclear reactors and hydroelectric dams to keep the lights on.
The Technology That Has Not Arrived
Net zero by 2050 is not merely a plan to build more wind farms. It is a plan built on a specific set of technology assumptions, several of which have already failed to materialise on anything like the required timeline, and some of which have failed entirely.
Carbon capture and storage - the technology that is supposed to suck CO2 out of the atmosphere or catch it before it leaves industrial smokestacks - is central to every credible net zero pathway. The UK government committed £21.7 billion over 25 years in October 2024 to the first CCS clusters, in the north-east of England and north-west, with a further £9.4 billion announced at the 2025 Spending Review for additional projects. The Department for Energy Security and Net Zero has its own target of capturing 20 to 30 million tonnes of CO2 per year by 2030. If all first-round projects proceed on schedule - which, given the history of large UK infrastructure projects, is the most optimistic possible assumption - they will capture around 4.9 million tonnes by 2030. That is less than a quarter of the lower end of the government's own target. The Public Accounts Committee described itself as "left unconvinced" that CCS is "the silver bullet government is betting on" and warned of a "high-risk approach backing first-of-a-kind, unproven technologies with large amounts of taxpayer and consumer funding." The committee might have also noted that around three-quarters of that funding falls on consumers already paying the highest industrial energy prices in the developed world.
The international track record is not reassuring. Australia's Gorgon CCS project, one of the world's largest, recorded a 30 per cent carbon-capture rate in 2024 against a design target of 80 per cent. The problem is not engineering in principle - the engineering works in laboratory conditions and in specific industrial settings. The problem is cost, scale and integration with a working economy. CCS has been a central pillar of net zero planning for fifteen years. It has not yet been proven at the scale required anywhere.
Hydrogen for heating was supposed to be the alternative for homes that could not or would not take heat pumps. The government commissioned "hydrogen village" trials to demonstrate that existing gas networks could be repurposed to carry hydrogen to residential heating. Both trials collapsed. The Whitby trial was abandoned in July 2023 after residents made clear they did not want to participate. The Redcar trial fell apart in December 2023 because Northern Gas Networks could not source sufficient low-carbon hydrogen to run it. The town-scale trial was quietly shelved until after 2026. Under 1 per cent of UK hydrogen is currently produced by green methods. A survey of members of the Institution of Chemical Engineers found 55 per cent believed the UK should abandon plans to install hydrogen boilers in homes. The hydrogen-for-heat pathway is not delayed. It is, in any honest assessment of current evidence, dead.
Heat pumps are the government's preferred solution for home heating and the technology whose rollout is furthest advanced - which is to say, furthest advanced from a position of near-zero toward a target that remains extremely distant. In 2024, 98,469 hydronic heat pumps were sold in the UK, a 63 per cent increase on 2023 and the best year the industry has ever recorded. The government's target is 600,000 installations per year by 2028. The gap between current performance and target is therefore approximately six-fold. In January 2026 the government quietly revised the ambition downward, to 450,000 per year by 2030 - a tacit acknowledgement that the 2028 target is not going to be met. The National Audit Office found that the Boiler Upgrade Scheme, the main subsidy mechanism, had installed around 18,900 heat pumps by December 2023 - less than half the planned level. Meanwhile, the UK sells around 15 gas boilers for every heat pump. An air-source heat pump costs on average around £13,000, against roughly £2,500 for a gas boiler, and even with the £7,500 government grant the economics are challenging for most households - particularly as electricity in Britain costs, for domestic consumers, roughly three to four times as much per unit as gas.
The Price of the Performance
The reason that last point matters beyond household budgets is what it is doing to British industry. The UK had the highest industrial electricity prices of all 25 countries reporting data to the International Energy Agency in 2024, at 26.63 pence per kilowatt-hour. The Economics Observatory put the comparison starkly: this is 75 per cent above the IEA median and more than four times higher than the United States and Norway. Three times higher than China. Three times higher than India. These are the countries against which British manufacturers are supposed to compete.
The consequences are visible in the data. ONS figures show that output in energy-intensive manufacturing - paper, petrochemicals, metals, cement, ceramics, glass - has fallen by a third since 2021 to its lowest level since 1990. The CBI has reported that 40 per cent of UK firms are holding back investment because of energy bills. Sir Jim Ratcliffe, before he moved to Monaco, said British energy prices were "killing" the UK chemical industry - and he was not speaking metaphorically. Petroineos's Grangemouth refinery, Scotland's only oil refinery, ceased refining in 2025. The fertiliser industry, which requires enormous quantities of cheap energy, has been largely hollowed out. CF Industries closed its last UK ammonia plant in 2022. The aluminium smelter at Lochaber, the UK's last primary aluminium smelter, has survived only through substantial government support.
The standard response to this from net zero advocates is to note that the OBR's most recent cost estimates for the transition are considerably lower than earlier projections - and that is true. The OBR's July 2025 report revised its cumulative government investment cost estimate down to around 6 per cent of GDP by 2050, and the Climate Change Committee puts the net whole-economy resource cost at £116 billion over 2025 to 2050, roughly 0.2 per cent of GDP per year. These are large numbers, but considerably smaller than the £469 billion figure (around 21 per cent of GDP) in the OBR's 2021 Fiscal Risks Report. Credit where it is due: renewable technology costs have fallen faster than most people predicted, particularly for offshore wind and solar.
But there are two problems with using this to claim the transition is broadly affordable. The first is that the lower cost estimates rest on technology assumptions that, as the sections above demonstrate, are currently not being met. The second is that the lower estimates do not address the distributional reality: the GMB union's analysis of the underlying OBR numbers found that the gross investment requirement implied something in excess of £50,000 per household across the transition, even if much of it is private rather than taxpayer money. The private investment flows through energy bills. It is the same money, arriving through a different letterbox.
Who Agreed to This?
Net zero by 2050 became law in June 2019. It was done by statutory instrument - a secondary piece of legislation amending the 2008 Climate Change Act - laid before Parliament on 12 June 2019 and approved after a short Commons debate on 24 June 2019. There was no full parliamentary bill. No committee scrutiny of the kind that a commitment of this magnitude would normally attract. No green paper, no white paper, no independent costing of the kind that preceded major spending commitments. Theresa May's government was in its terminal phase, consumed by Brexit, and the net zero amendment sailed through with what the Institute for Government later described as "little evidence that the government, and the politicians who waved the new target through with little debate, have confronted the enormous scale of the task ahead."
No party has since put net zero itself to the electorate as a specific, costed proposition and won a mandate for it. It exists in the law and in the rhetoric of every major party - until recently - as an inherited commitment of uncertain parentage that politicians have been reluctant to explain, cost, or defend in any specific terms because the specific terms are not reassuring.
The public, offered that specific information, has drawn its own conclusions. Polling by the Policy Institute at King's College London, conducted with Ipsos in August 2025, found that support for reaching net zero before 2050 had fallen from 54 per cent in 2021 to 29 per cent. Those saying the UK does not need the net zero target at all, or should not have one, rose from 9 per cent to 26 per cent over the same period. Willingness to vote for a party committed to strong climate action even if it led to higher energy costs fell from 52 per cent in 2024 to 44 per cent in 2025. YouGov polling found that only 2 per cent of Britons actually believe the government will reach net zero by 2050.
That last figure is the most revealing. The British public does not disbelieve in climate change in significant numbers. What it has concluded, with considerable realism, is that the policy as currently constructed is not going to work. They are right. They have reached this conclusion partly through the lived experience of energy bills, partly through watching targets get delayed and quietly downgraded, and partly through a basic scepticism about whether a country producing 0.7 per cent of the world's emissions is going to change anything meaningful while China opens a new coal plant every other week.
The politics has followed. Rishi Sunak's September 2023 announcements pushed the petrol and diesel car ban from 2030 to 2035, weakened the gas-boiler phase-out to an 80 per cent target with a permanent exemption for low-income households, delayed the off-grid oil-boiler ban from 2026 to 2035, and scrapped landlord energy-efficiency requirements. Sunak's political positioning was clumsy, but his instinct that the pace of the transition was outrunning public consent was not wrong. Kemi Badenoch, as Conservative leader, said on 18 March 2025 that net zero by 2050 is "impossible" and that "anyone who has done any serious analysis knows it can't be achieved without a significant drop in our living standards." Forty per cent of Conservative MPs, in an ECIU/YouGov poll of MPs conducted in June 2025, still support the 2050 target. Thirty-nine per cent agreed it is "impossible."
Reform UK's position is to scrap the whole thing. Labour's position is to hold the headline target while quietly adjusting the mechanisms - moving some renewable levies onto general taxation at Budget 2025, revising heat-pump targets downward in January 2026, hoping that the 2030 clean power milestone and the 2030 renewable targets look achievable enough that the 2035 and 2050 commitments remain politically viable. They probably do not. The 2023 Contracts for Difference auction, the mechanism by which the government procures renewable generation, attracted zero offshore wind bids because the government-set strike price of £44 per megawatt-hour was too low to cover costs inflated by 40 per cent. An auction for the flagship technology in the flagship policy got no takers. Later rounds recovered - AR6 in 2024 secured around 9.6 gigawatts, and AR7 in 2025 achieved record totals at strike prices rising to £91.20 per megawatt-hour - but the cost of recovery was giving generators substantially more money, which flows, ultimately, through bills.
What This Is Actually About
It is worth being precise about what this article is and is not arguing. It is not arguing that climate change is not happening, or that the global energy transition is undesirable, or that Britain should return to burning coal. The climate science is not in serious dispute and the long-term case for decarbonising the global economy is not the subject here. The subject is whether UK net zero policy, as specifically constructed and at the cost being paid, represents a serious and rational response to that challenge. The answer is that it does not.
Britain is paying the highest industrial electricity prices in the developed world. It is closing efficient steelworks and importing from less efficient ones. It is banking emissions reductions that exist only in one accounting convention but not in another. It is building the legal architecture for a transition that its own grid operator says requires "delivering at the limit of what is feasible" on every metric simultaneously. It is depending on carbon capture technology that is running at roughly a fifth of its planned 2030 capacity. It is depending on hydrogen-for-heat technology whose only two trials both collapsed before they started. It is depending on heat-pump deployment running at roughly a ninth of its 2028 target. And it is doing all of this for a country that produces 0.7 per cent of the world's greenhouse gas emissions, in a world where global emissions hit a record high in 2024, and where the two largest emitters are building coal plants faster than at any point in the last decade.
The standard defence of all this is moral rather than practical. Britain, the argument goes, must be on the right side of history. The alternative is giving up. No country individually can solve a collective-action problem, but all countries individually declining to do their part is how collective action fails. These are not stupid arguments. The collective-action framing in particular has genuine intellectual force. But it rests on the assumption that what Britain is doing constitutes a meaningful "part" - that the sacrifice is producing something. A policy that exports emissions while improving statistics, that builds targets on technologies that have not materialised, that drives industrial production abroad to higher-carbon environments, that prices its own manufacturers out of global competition, and that a majority of the population does not believe will succeed - that is not a policy doing a meaningful part. It is a performance of doing a meaningful part, at very considerable cost, for an audience that is no longer convinced.
The politicians who signed the statutory instrument in June 2019 were not lying, necessarily. Many of them genuinely believed - and many still believe - in the programme they were endorsing. The problem is that belief is not the same as a plan. And what Britain has had, for the better part of a decade, is a belief dressed as a plan, written into law with minimal scrutiny, funded in ways that have made British industry uncompetitive, and delivered at a rate - on the technologies that actually matter, from heat pumps to carbon capture to the grid connection queue - that is nowhere close to what the timetables require.
The net zero target will not be met by 2050. The 2030 clean power target will, at best, be met in an attenuated form that involves heavy reliance on imported electricity from other countries' generating assets. The heat pump target will be missed by years. The carbon capture target has already been missed by roughly five-fold with six years to go. These are not pessimistic projections. They are what the official bodies - the National Audit Office, NESO, the Public Accounts Committee, the Climate Change Committee's own progress reports - are saying in the measured language of public accountability.
What would change this assessment? If China and India credibly peaked their emissions and began cutting them in the near term, the irrelevance argument weakens considerably. If British industrial electricity prices fell to the IEA median through grid reform and expanded domestic nuclear, the competitiveness damage becomes manageable. If carbon capture demonstrated genuine at-scale performance, the technology-dependency problem eases. If heat-pump installation reached 300,000 per year by 2026 - still well below target but a genuine step-change - the trajectory becomes at least arguable. None of these things is currently happening. The test of a serious policy is whether it can survive contact with reality. UK net zero, on the evidence of where things actually stand in 2026, is failing that test by almost every measure that matters.
The country deserves to be told this plainly. It is not being told it plainly, because the people responsible for the policy cannot admit it without conceding the last decade, and the people who want to scrap it entirely are not making the careful, evidence-led case - they are making the politically easy case. The result is a national conversation conducted almost entirely between two kinds of bad faith, while the real situation - which is that Britain is paying an enormous economic price for a policy that is failing to deliver and would not move the global temperature needle even if it did - goes largely unsaid.