Shell sold Niger Delta asset despite internal doubts over $10.9bn cleanup

Shell estimated it could cost about $10.9 billion to decommission its ageing onshore oil infrastructure in Nigeria before completing the sale of its Niger Delta business, according to newly disclosed internal company documents that are raising fresh questions over whether the new owners can shoulder one of Africa’s largest environmental clean-up burdens.

The documents, released in UK legal proceedings and analysed in a report published Tuesday by Amnesty International and six partner organisations, suggest Shell was aware not only of the scale of its environmental liabilities but also of internal concerns about transferring those obligations to a buyer whose financial and technical capacity had been questioned within the company.

The findings shift attention from the pollution itself, long documented in the Niger Delta, to what may become the next major battle: whether Shell can walk away from decades of environmental damage after selling its Nigerian onshore business.

“This is not simply about historical pollution,” Amnesty International Nigeria Director Isa Sanusi said. “Shell has long blamed oil theft and sabotage for pollution in the Niger Delta. But these documents cut through years of denial and raise grave questions about what Shell knew, what it allowed to continue, and whether it then sought to walk away from the costs of its toxic legacy.”

The report, Nigeria: Lifting the Lid, examines internal emails, engineering audits, presentations and confidential reviews disclosed during ongoing litigation in the United Kingdom.

According to the report, Shell internally estimated that dismantling and restoring its onshore facilities – including pipelines, wells and associated infrastructure – could cost approximately $10.9 billion.

The estimate emerged before Shell completed the sale of its onshore subsidiary, the former Shell Petroleum Development Company (SPDC), to Renaissance Africa Energy in 2025 after more than eight decades of operations in Nigeria.

The report says internal documents also questioned whether the acquiring company possessed the capacity to manage such extensive environmental responsibilities.

Neither Shell nor Renaissance has publicly disclosed how much funding has been specifically set aside to meet future decommissioning and remediation costs.

A legacy of ageing infrastructure

The report paints a picture of infrastructure that had deteriorated after decades of production.

Internal records allegedly describe sections of Shell’s network as suffering from chronic integrity problems, inadequate leak detection systems, incomplete well records and repeated exemptions from engineering standards.

One ageing pipeline was reportedly described internally as “a basket,” while another presentation estimated that pollution had damaged about 375 square kilometres of mangrove forest in the Niger Delta.

Environmental groups argue the newly disclosed material undermines Shell’s longstanding position that pollution in the region was primarily caused by oil theft and sabotage.

Instead, they say the documents show company officials were aware that ageing infrastructure posed significant risks while production continued.

Who pays now?

The report argues that the sale of Shell’s Nigerian onshore assets has made accountability more complex.

If future remediation costs prove substantially higher than expected, communities and campaigners fear responsibility could become contested between Shell, the new owners and Nigerian authorities.

“Shell cannot be allowed to take the oil, take the profits and leave the pollution behind,” said Olanrewaju Suraju, chairman of the HEDA Resource Centre, one of the organisations behind the report.

“Communities in the Niger Delta deserve truth, justice, clean-up and full remedy.”

The issue carries potentially significant financial implications. Large-scale decommissioning obligations have become an increasingly important issue for global oil companies as ageing oilfields reach the end of their productive lives.

Unlike offshore facilities, Nigeria’s onshore operations include thousands of kilometres of pipelines, hundreds of wells and decades of accumulated environmental damage, making remediation particularly complex and expensive.

Shell disputed the report’s conclusions. In a response included in the publication, the company said it did not recognise Amnesty International’s characterisation of its operations.

“Shell is committed to honesty, integrity and respect for people, and to conducting business in an ethical and transparent manner,” the company said.

Shell also argued that the documents failed to reflect “the challenging operating environment in the Niger Delta at the time,” where widespread oil theft, pipeline sabotage and illegal refining complicated operations.

The report comes as Shell continues to defend multiple lawsuits in UK courts brought by Niger Delta communities seeking compensation for decades of pollution.

Those cases could further test the extent to which multinational companies remain legally responsible for environmental damage after selling local subsidiaries.