Nigeria's Climate Change Act, conditional and unconditional nationally determined contributions, and the principle of common but differentiated responsibilities

The commitments outlined in Nigeria's Nationally Determined Contribution (NDC) are crucial for fulfilling the country's obligations under the Paris Agreement. The updated NDC reaffirms the Nigerian government's pledge to achieve a 20 per cent unconditional reduction and a 47 per cent conditional reduction in greenhouse gas emissions by 2030. To implement these commitments nationally, the Nigerian government enacted the Climate Change Act of Nigeria in 2021. However, the Climate Change Act does not explicitly incorporate the 20 per cent unconditional and 47 per cent conditional reduction targets from Nigeria's NDC. This article examines the implications of the Climate Change Act not directly recognizing these NDC targets and explores the legal status of NDCs at the national level. The assessment reveals that, despite the absence of explicit recognition in the Climate Change Act, the Nigerian government is legally obligated to achieve 20 per cent unconditional emission reduction by 2030. This is because the 20 per cent unconditional obligation is grounded in the principle of Common but Differentiated Responsibility (CBDR). Conversely, the Nigerian government does not have a legally binding obligation to the 47 per cent conditional emission reduction targets, as achieving this reduction depends on international support.