Rosebank oilfield would not breach UK emission targets, say government insiders

Rosebank is a major oilfield in the North Sea. Its proposed development has become a test of how Britain balances fossil-fuel production, climate duties, energy security and economic plans. Approval matters because the field could provide tax revenue, jobs and investment, while campaigners argue that opening another oilfield harms the move toward net zero.

The decision now rests with Miatta Fahnbulleh, the energy secretary. A judge ruled in 2024 that the previous environmental consent was wrongly granted because ministers did not count emissions from burning Rosebank’s oil. Fahnbulleh must therefore reconsider the project through a quasi-judicial process, using environmental assessments and other evidence.

The government has not yet announced the outcome. Some cabinet figures, including John Healey, support approval, while Fahnbulleh is reported to be leaning against it. The Treasury has already included expected Rosebank tax revenue in its plans, creating pressure to approve the field despite its climate implications.

Experts estimate Rosebank could create 1m additional tonnes of carbon dioxide by 2042. The article compares that figure with an overall UK limit of 90m tonnes. Rosebank’s estimated addition is therefore about one-ninetieth of the stated limit, or roughly 1.1%.

The comparison is important because the UK’s carbon budgets constrain emissions counted against Britain. Much of Rosebank’s oil is expected to be exported. Under the government insiders’ interpretation, emissions from burning that exported oil would count toward other countries’ emissions rather than Britain’s domestic targets. Production emissions at the field would still be relevant.

This accounting distinction does not settle the climate argument. Greg Muttitt said approval would not breach commitments firmly made by the UK, because most oil would be exported. Climate campaigners and other experts argue that adding new oil and gas production still makes the global carbon challenge harder, even when the emissions appear in another country’s totals.

Emissions accounting usually follows where fossil fuel is burned, not simply where it is extracted. Rosebank would be developed in the UK’s North Sea, but most of its oil is expected to leave Britain. The countries that import and burn it would therefore record those combustion emissions in their own national totals.

That is why government insiders believe Rosebank could be approved without breaching Britain’s domestic climate targets. The article says the field could add about 1m tonnes of carbon dioxide by 2042, while the UK’s overall limit is 90m tonnes. The domestic accounting would focus on emissions counted within UK targets, not all future emissions from exported fuel.

The distinction remains politically and environmentally disputed. Climate campaigners and some Labour backbenchers see shifting emissions from one country to another as a trivial difference. Greg Muttitt said approval would not conflict with firm UK commitments, but other experts argue that any new oilfield harms the global effort to stay within safe carbon budgets.

Before the ruling, ministers had assessed Rosebank’s environmental impact without properly including the emissions created when its oil was burned. That approach treated drilling emissions as the main project-related concern. The court found this assessment legally inadequate.

In 2024, a judge ruled that ministers must account for both emissions from drilling and emissions from burning the oil. The ruling concerned the way the previous Conservative government had granted environmental consent. Because that consent was incorrectly given, Miatta Fahnbulleh must now make a new decision.

The change broadens the evidence she must consider. It does not automatically require rejection, because most Rosebank oil would be exported and its combustion emissions would count toward other countries’ totals. But the ruling means those wider climate effects must be examined, alongside Britain’s Paris Agreement commitment and other environmental evidence.

The central decision-maker is Miatta Fahnbulleh, the energy secretary. She must reconsider Rosebank after the court ruling. John Healey, the chancellor, and other cabinet colleagues are lobbying for approval. The Treasury has also built expected tax revenue into its plans. The prime minister’s “pragmatic” language has been read by supporters as a possible signal favouring development.

Supporters point to economic benefits. The field’s operator, Adura, estimates tax payments could reach £500m a year by the end of this parliament. Supporters also cite jobs, investment, reindustrialisation and energy security. Scottish Labour MPs are believed to be overwhelmingly in favour of approving the oilfield.

Opponents focus on climate damage. Greenpeace, Friends of the Earth, climate researchers and some Labour backbenchers argue that new drilling undermines net zero and global carbon limits. Fahnbulleh’s allies say Rosebank’s climate harm may not breach legal limits, but its possible benefits may not outweigh that harm.

If Rosebank were rejected, the Treasury would lose the tax income it has already included in its financial planning. Government sources say that would create a shortfall. Adura, the operator, estimates the project could provide £500m a year in tax by the end of this parliament.

Supporters also associate approval with jobs and investment. They describe those as potential economic benefits of developing the field, alongside tax revenue. The article does not provide a specific jobs figure, nor does it state that every planned job or investment would certainly be cancelled if ministers rejected Rosebank. The clearest stated consequence is the loss of expected tax receipts.

That financial risk is helping drive cabinet pressure for approval. Fahnbulleh’s allies argue that economic gains should be weighed against climate damage. The decision must still consider environmental assessments, public representations and Britain’s climate commitments, so tax planning alone does not determine the outcome.

UK carbon budgets are legally relevant limits on the greenhouse-gas emissions Britain counts over specified periods. They guide government decisions about policies and projects. The article gives a 90m-tonne overall limit and says Rosebank could add about 1m tonnes by 2042. Approval must therefore be tested against the emissions that count toward UK budgets.

The Paris Agreement is an international climate agreement. In this case, Britain is committed to taking action to prevent global temperatures rising more than 1.5C. That commitment is broader than checking whether one project fits within a domestic accounting total. Ministers must consider whether new production makes the global temperature goal harder to achieve.

The article describes a dispute over how these duties apply. Exported oil is mostly burned abroad, so those emissions count toward other countries’ totals. Government insiders say approval can meet firm UK obligations, while campaigners and some experts argue that new oilfields still undermine safe carbon budgets and climate leadership.