The UK government is grappling with a decision over the Rosebank oilfield development, with insiders indicating that its approval would not contravene the country’s legally binding emission targets. The project, located in the North Sea, has become a focal point of debate within the cabinet, particularly between Energy Secretary Miatta Fahnbulleh and Chancellor John Healey.

Fahnbulleh reportedly leans toward rejecting the project amid climate concerns, while Healey and other ministers advocate for its approval, citing economic benefits and energy security. Government sources suggest that under a strict interpretation of the UK’s climate commitments, Rosebank could proceed because emissions generated from burning the oil abroad do not count toward the UK’s domestic carbon budgets. One insider noted that Fahnbulleh has more flexibility on the issue than initially assumed.

The legal context for the decision stems from a 2024 court ruling that found previous environmental consent granted under the Conservative government was flawed. The judgment stipulated that ministers must consider not only emissions from the extraction process itself but also those arising from the eventual combustion of the oil. Although most of the oil is expected to be exported and burned outside the UK, emissions from these consumption activities fall under other countries’ carbon budgets, not the UK’s.

Estimates suggest that Rosebank could contribute an additional one million tonnes of CO₂ emissions by 2042, compared to the UK’s overall carbon budget cap of 90 million tonnes for that period. Fahnbulleh’s earlier decision to approve the nearby Jackdaw gasfield was justified partly on grounds of national energy security, despite concerns about emissions; Jackdaw is projected to represent approximately 0.01% of the global greenhouse gas emissions from the oil and gas industry by 2035.

Climate campaigners, some Labour MPs, and environmental groups have voiced strong opposition to Rosebank, arguing that it undermines the UK’s commitments under the Paris Agreement to limit global warming to 1.5 degrees Celsius. Greenpeace and Friends of the Earth have urged the prime minister to evaluate the cumulative environmental impacts of various infrastructure and energy projects, including North Sea drilling, airport expansion, and heat pump subsidies, rather than considering them in isolation.

Academic voices, such as Greg Muttitt of University College London, contend that approving Rosebank would contradict the UK’s climate leadership ambitions and exacerbate carbon emissions significantly, especially compared to Jackdaw. However, Muttitt also acknowledged that, from a legal standpoint, the UK would not face international sanctions for approving the project since most emissions would occur overseas.

Within government, officials highlight that the Treasury expects substantial tax revenue from Rosebank, and rejecting it could create a fiscal shortfall. The prime minister has reportedly signaled support for a pragmatic approach to oil and gas development consistent with his broader economic policies, including a recent call for industrial rejuvenation in Scotland, where many Labour MPs advocate for the project’s approval.

Ultimately, the decision lies with Energy Secretary Fahnbulleh, who must balance legal obligations, climate commitments, economic considerations, and political pressures in determining the project’s fate. While she has approved Jackdaw for national security reasons, her stance on Rosebank remains cautious, reflecting concerns over its environmental consequences and broader policy implications.