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Tories overstated net zero cost by nearly £500bn after spreadsheet error

politicsOct 9, 2026331,836

Kemi Badenoch’s Conservative conference policy document The Right Way cited a £957 billion cost for delivering net zero by 2050, about twice the total in the Climate Change Committee’s own figures. The Guardian reports the discrepancy arose because a CCC spreadsheet tally was apparently double-counted, turning the correct £478 billion into £957 billion. The Tory pamphlet used that inflated figure to justify scrapping the UK’s net zero target and Badenoch repeated the line in her conference speech; her foreword stresses she is “as an engineer” used to correct diagnosis. The error was spotted by Carbon Brief and the figure appears to have been republished by the Institute of Economic Affairs and the Spectator before appearing in the Conservative document. A CCC spokesperson said “We don’t recognise this number” and reiterated the committee’s prior offer to meet Badenoch and explain its advice. The CCC’s most recent analysis estimates net zero would cost about £110 billion overall, roughly £4 billion a year or 0.2 percent of GDP. The miscalculation undercuts a principal economic rationale the Conservatives cited for abandoning the 2050 target and leaves open scrutiny of how the party sourced and checked its figures.

Prem Sikka
@premnsikka.bsky.social

Tories overstate net zero cost by nearly £500bn in apparent spreadsheet error. Same error amplified by right-wing think-tanks, press It suited their ideological leanings. Future historians might say - planet earth and human life was shattered by a spreadsheet error.

559Yesterday
Quoting this
Prof. Catherine Rowett, ex MEP8

It wasn't a spreadsheet error. It was an ideological enthusiasm for a spreadsheet error that amounted to a useful lie. Useful until you've killed the planet and undermined your own future.

Knitting Cat5

George Osborne made a serious ‘error’ when reading figures which directly led to Tory Austerity on steroids. Question is - are these deliberate mistakes or just an excuse to do real harm on behalf of the far right & the fossil fuel lobby? The rich always get richer under Tories, the poor - poorer.

LawrieBhoy 🍀5

Yet Diane Abbott’s miscalculation over police numbers has been used to belittle her, for the last ten years.

Bob White4

Why do people still vote for these idiots who don’t check documents before they’re sent out? The Tories and their mediathink tank fan club should be forced to correct the record with a main article/main story etc. Why are there no standards governing mistakes and lying?

Chris Guiton3

Arguably, Badenoch is herself a prime example of a spreadsheet error...

rob3

there is a theme here austerity was a spreadsheet error too why isn’t massive political incompetence like this punished? surely this was misconduct in public office www.thelondoneconomic.com/lifestyle/ge...

His Royal Huwness 🏴󠁧󠁢󠁷󠁬󠁳󠁿🐸🇵🇸🇪🇺2

One person's "spreadsheet error" is another fascist's big lie. Think that's hyperbole?

Kevin 🏴󠁧󠁢󠁷󠁬󠁳󠁿🇪🇺💚 #VoteGreen2

A 'Spreadsheet' error or a deliberate act to mislead the electorate?? It's the #Tories, so it's deliberate.

JayEsstoo2

It should be a criminal offence for politicians, especially MPs, to lie. And some consequence for "errors" of such magnitude when those who fail to do due diligence & publicise such errors as facts are funded by the public purse. Same consequences as most employed people who f*** up in a job face.

Best for Britain
@bestforbritain.org

Kemi Badenoch’s flagship party conference policy document overestimated the cost of net zero by nearly £500bn… …seemingly after someone accidentally double-counted figures on a spreadsheet. www.theguardian.com/politics/202...

347Yesterday
John Springford
@johnspringford.bsky.social

Conservatives double the cost of net zero with spreadsheet error. Spiky comment from the Climate Change Committee, whose estimates they messed up www.theguardian.com/politics/202...

91Yesterday
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