Biodiversity Net Gain: Applying European Frameworks to African Contexts

Biodiversity net gain (BNG) — the principle that development projects should leave biodiversity measurably better off than before — has moved from a conservation aspiration to a legal requirement in the United Kingdom and is embedded in the EU Nature Restoration Law. As major international financiers adopt BNG requirements as a condition of lending, the framework is increasingly relevant to infrastructure and extractive projects across Africa.

The appeal is understandable. A mandatory BNG framework, properly designed, creates a direct financial incentive for biodiversity conservation and restoration, channels private capital to habitats that are otherwise undervalued by markets, and provides project developers with a clear, measurable standard rather than vague "no net loss" commitments that are difficult to operationalise.

CLEEN has piloted BNG approaches in four African countries — Rwanda, Mozambique, Ghana, and Botswana — across mining, road infrastructure, and agribusiness development contexts. The experience is instructive. Biodiversity baseline data are consistently thinner than in European contexts, requiring more investment in pre-project ecological surveys. The metric systems developed for UK and EU contexts (the UK Biodiversity Metric 4.0 and EU habitat condition assessments) do not map cleanly onto African biomes and species assemblages, requiring careful local adaptation.

Community rights and land tenure intersect with BNG in ways that European frameworks do not adequately address. Offset sites for BNG must be ecologically appropriate, additional, and permanent — but in contexts where community land rights are customary and legally uncertain, permanence is difficult to guarantee without careful legal structuring and genuine community partnership.

Despite these challenges, all four pilots achieved positive outcomes and attracted development finance on improved terms. The key lesson: BNG can work in African contexts, but it requires investment in local ecological data, adapted metrics, legal structures that respect community rights, and local expertise to design and verify offsets. With the right support, it can become a powerful tool for channelling private investment into Africa's biodiversity crisis.