The study focuses on the ten largest recipients of environmental aid in Africa, a group selected on the basis of funding scale and data availability. Drawing on balanced panel data covering the period from 2002 to 2022, Dzudzor assembled a picture of how external environmental assistance, domestic fiscal conditions and measured environmental quality have moved together across two decades. The outcome variable was a composite environmental quality index constructed from multiple input variables, a design intended to capture overall ecological conditions rather than a single pollutant or land-cover metric. This breadth matters, because environmental aid is itself a broad category, spanning projects aimed at biodiversity, pollution control, climate mitigation and sustainable resource management.

Methodologically, the paper takes the problem of causality seriously, which is where much of the aid-effectiveness literature has historically stumbled. Simple correlations between aid flows and environmental outcomes are notoriously unreliable: donors may channel money to countries already experiencing environmental stress, or countries with strong institutions may both attract more aid and manage their environments better. To cut through this tangle, the study applies three increasingly demanding estimators. Fixed Effects regression controls for time-invariant characteristics of each country. Instrumental Variable Fixed Effects estimation then addresses the reverse-causality problem by using instruments to isolate variation in aid that is not driven by local environmental conditions. Finally, an Instrumental Variable Generalised Method of Moments approach provides an additional robustness check against endogeneity bias. The fact that the central findings survive across all three frameworks lends them considerable weight.

The headline result is stark. Across the ten countries, environmental aid is, on average, associated with a decrease in environmental quality. In other words, the arrival of large aid-funded projects appears to strain the environmental resources they are designed to safeguard. The study offers a coherent mechanism for this seemingly paradoxical pattern: the immediate deployment of aid projects, with their construction activity, logistics, land conversion and institutional churn, imposes a short-term ecological cost before any long-term environmental gains can be realised. A dam built with climate financing still floods a valley first. A reforestation programme still requires roads, nurseries and vehicles before a single canopy closes. The environmental ledger, in the early years, runs a deficit.

But the analysis uncovered a second effect that changes the interpretation entirely. Environmental aid significantly enhances domestic revenue mobilisation in the recipient countries, a phenomenon the author describes as a fiscal crowd-in effect. Rather than displacing or substituting for domestic taxation, external environmental assistance appears to stimulate it, expanding the pool of government revenue available for public spending. This is a crucial finding, because fiscal capacity, the ability of a state to raise and deploy its own resources, is widely seen as the binding constraint on environmental governance in developing economies. Agencies cannot enforce regulations, monitor protected areas or invest in clean infrastructure without budgets, and those budgets depend on revenue.

Putting the two results together yields the study’s central thesis: a short-term trade-off embedded in a long-term opportunity. Aid projects initially degrade environmental quality while simultaneously building the fiscal muscle needed to govern the environment better. Over time, the increase in domestic tax revenues provides the fiscal capacity required to improve environmental regulation, fund monitoring and enforcement, and invest in cleaner production. The implication is that the apparent failure of environmental aid in the short run may partly reflect a transition cost, one that donors and recipients have rarely accounted for when evaluating programme effectiveness. Evaluations that judge aid within a few years of disbursement may be measuring the construction phase, not the governance dividend.

The study also probes the conditions under which aid’s environmental effectiveness varies, and here the findings complicate some conventional wisdom. The environmental impact of aid is conditioned by domestic fiscal capacity, meaning that the same dollar of assistance can produce different ecological outcomes depending on the recipient government’s ability to raise and manage revenue. Perhaps more strikingly, higher income levels do not necessarily strengthen revenue mobilisation in these countries. Economic growth alone, in other words, does not automatically translate into the fiscal machinery needed for environmental stewardship. This challenges the assumption, implicit in much development thinking, that countries simply grow into environmental capacity as they become richer.

Trade openness emerges as a second conditioning factor, and not a benign one. The analysis finds that trade openness generates both environmental and fiscal pressures in the ten recipient countries. Open economies may specialise in resource-intensive or polluting production to serve export markets, degrading environmental quality even as trade revenues swell government coffers. The result echoes a long-running debate in environmental economics about whether trade liberalisation shifts pollution and resource extraction toward developing countries with weaker regulatory institutions. For environmental aid policy, the lesson is that assistance cannot be designed in isolation from trade and industrial policy: a country whose comparative advantage lies in dirty exports will struggle to convert green grants into green outcomes without complementary reforms.

The policy implications Dzudzor draws from the results are concrete. He argues for integrating environmental aid directly into national budgeting systems rather than running it through parallel donor-managed channels, a shift that would force aid projects to compete for and reinforce domestic fiscal priorities. He calls for strengthening domestic fiscal capacity as an explicit goal of environmental assistance, effectively making revenue mobilisation a deliverable of green aid rather than a separate development agenda. And he advocates coordinating aid with trade and industrial policies to support cleaner production, stronger environmental regulation and green industrial upgrading. In this framing, the purpose of environmental aid is not merely to fund projects but to build the fiscal and institutional scaffolding that lets countries govern their own environments.

For the global community pursuing the Sustainable Development Goals on responsible consumption, climate action and partnerships, the study lands at a sensitive moment. Donor governments facing fiscal pressure at home are increasingly demanding evidence that environmental assistance works, while recipient governments argue that aid is too fragmented, too short-term and too disconnected from national systems. This research suggests both sides are partly right: aid delivered as isolated projects may indeed show disappointing environmental results in the short run, but aid that deliberately builds domestic revenue capacity could pay ecological dividends for decades. The ten largest environmental aid recipients in Africa, the countries at the centre of this analysis, are effectively a testing ground for that proposition. If the crowd-in effect identified here can be harnessed deliberately, the uncomfortable finding that environmental aid initially degrades environmental quality may come to be seen not as evidence of failure, but as the visible cost of building the fiscal foundations on which lasting environmental governance depends.

Subject of Research: The effect of environmental aid and domestic fiscal capacity on environmental quality in Africa's largest aid recipient countries

Article Title: Environmental aid fiscal capacity and environmental quality in the ten largest environmental aid recipient countries in Africa

Article References: Dzudzor, M. A. (2026). Environmental aid fiscal capacity and environmental quality in the ten largest environmental aid recipient countries in Africa. Discover Sustainability. https://doi.org/10.1007/s43621-026-04493-y

Image Credits: AI Generated

DOI: 10.1007/s43621-026-04493-y

Keywords: environmental aid, Africa, fiscal capacity, environmental quality, crowd-in effect, domestic revenue mobilisation, trade openness, sustainable development goals, panel data, IV-GMM, environmental governance, Discover Sustainability