Infrastructures et convergence réelle dans la CEDEAO: contribution des transports, de l'énergie, et des télécommunications sur la période 2000-2024.

SECK, Serigne Momar (2026): Infrastructures et convergence réelle dans la CEDEAO: contribution des transports, de l'énergie, et des télécommunications sur la période 2000-2024.

Abstract

This study examines the impact of infrastructure on real convergence among ECOWAS member states over the period 2000-2024. It assesses the extent to which improvements in infrastructure contribute to narrowing economic performance gaps between member countries and the region’s most advanced economies. To capture the multidimensional nature of infrastructure, a composite infrastructure index is constructed using Principal Component Analysis (PCA), based on four dimensions: transport infrastructure, access to electricity, internet usage, and mobile telephony. The analysis relies on a panel dataset covering the fifteen ECOWAS countries and incorporates several control variables, including intra-regional trade openness, inflation, agricultural value added, macroeconomic stability, human capital, and governance. The empirical strategy combines fixed-effects and random-effects models, Panel-Corrected Standard Errors (PCSE), Driscoll-Kraay standard errors, the dynamic System-GMM estimator, and an instrumental variable approach that uses public investment as an instrument for the infrastructure index. The study’s originality lies in the use of Cape Verde as the regional development frontier, complemented by robustness checks employing Ghana, Côte d’Ivoire, Nigeria, and the ECOWAS regional average as alternative benchmarks. The results indicate that infrastructure significantly contributes to reducing growth disparities within ECOWAS. Transport infrastructure emerges as the main driver of convergence, followed by access to electricity and mobile telephony. Sensitivity analyses confirm the robustness of the findings, particularly when Cape Verde is used as the regional benchmark. Overall, the study highlights the central role of infrastructure in fostering economic catch-up and strengthening regional integration in West Africa.

• Item Type: MPRA Paper
• English Title: Infrastructure and Real Convergence in ECOWAS : The Contribution of Transport, Energy, and Telecommunications over the Period 2000-2024
• Language: French
• Keywords: Real convergence; Infrastructure; ECOWAS; Economic growth; Regional integration; Panel data; Principal Component Analysis (PCA); Instrumental variables.
• Subjects: F - International Economics > F4 - Macroeconomic Aspects of International Trade and Finance > F43 - Economic Growth of Open Economies; F - International Economics > F4 - Macroeconomic Aspects of International Trade and Finance > F45 - Macroeconomic Issues of Monetary Unions; L - Industrial Organization > L9 - Industry Studies: Transportation and Utilities > L92 - Railroads and Other Surface Transportation; L - Industrial Organization > L9 - Industry Studies: Transportation and Utilities > L93 - Air Transportation; L - Industrial Organization > L9 - Industry Studies: Transportation and Utilities > L95 - Gas Utilities ; Pipelines ; Water Utilities; L - Industrial Organization > L9 - Industry Studies: Transportation and Utilities > L96 - Telecommunications; O - Economic Development, Innovation, Technological Change, and Growth > O1 - Economic Development > O11 - Macroeconomic Analyses of Economic Development; O - Economic Development, Innovation, Technological Change, and Growth > O1 - Economic Development > O12 - Microeconomic Analyses of Economic Development; R - Urban, Rural, Regional, Real Estate, and Transportation Economics > R4 - Transportation Economics > R42 - Government and Private Investment Analysis ; Road Maintenance ; Transportation Planning

References

Adekanbi, A.S. (2025). Critical Infrastructure Development in West Africa: A Strategic Imperative for Regional Integration and Economic Growth. ECOWAS Policy Analysis Series. Berlin: Africa Policy Research Institute.

African Development Bank. (2024). African Development Report 2024: Infrastructure, Industrialization and Economic Transformation in Africa. Abidjan: African Development Bank.

African Development Bank. (2024). Estimating Investment Needs for the Power Sector in Africa 2023-2030. Abidjan: African Development Bank.

Aschauer, D.A. (1989). Is Public Expenditure Productive? Journal of Monetary Economics, 23(2), 177-200.

Banerjee, A., Duflo, E., and Qian, N. (2020). On the Road: Access to Transportation Infrastructure and Economic Growth in China. Journal of Development Economics, 145, 102442. https://doi.org/10.1016/j.jdeveco.2020.102442

Barro, R.J. (1990). Government Spending in a Simple Model of Endogenous Growth. Journal of Political Economy, 98(5), S103-S125.

Barro, R.J., and Sala-i-Martin, X. (1992). Convergence. Journal of Political Economy, 100(2), 223-251.

Bernard, A.B., and Durlauf, S.N. (1995). Convergence in International Output. Journal of Applied Econometrics, 10(2), 97-108.

Byiers, B., and Dièye, C.T. (2022). Regional Integration in West Africa: Wasteful Overlaps or Necessary Options? ECDPM Discussion Paper No. 322. Maastricht: European Centre for Development Policy Management.

Calderón, C., and Servén, L. (2004). The Effects of Infrastructure Development on Growth and Income Distribution. Policy Research Working Paper No. 3400. Washington, DC: World Bank.

Calderón, C., and Servén, L. (2010). Infrastructure and Economic Development in Sub-Saharan Africa. Journal of African Economies, 19(Supplement 1), i13-i87.

Donaldson, D. (2018). Railroads of the Raj: Estimating the Impact of Transportation Infrastructure. American Economic Review, 108(4-5), 899-934.

Fontagné, L., Mitaritonna, C., and Santoni, G. (2023). Infrastructure, Trade Costs and the Gains from the African Continental Free Trade Area. CEPII Working Paper. Paris: CEPII.

Jedwab, R., and Storeygard, A. (2017). Economic and Political Factors in Infrastructure Investment: Evidence from African Roads. World Bank Economic Review, 31(3), 688-712.

Kouladoum, J.C. (2023). Digital Infrastructure and Inclusive Growth in Sub-Saharan Africa. Telecommunications Policy, 47(8), 102617.

Mankiw, N.G., Romer, D., and Weil, D.N. (1992). A Contribution to the Empirics of Economic Growth. Quarterly Journal of Economics, 107(2), 407-437.

Noah, A.O., Saba, C.S., Ngepah, N., and David, O.O. (2026). Convergence in Sustainable Infrastructure Development and Its Drivers in Africa: Fresh Policy Insight from an Algorithm Approach. Sustainable and Resilient Infrastructure, 11(2), 141-162. https://doi.org/10.1080/23789689.2025.2529051

Péridy, N., Bagoulla, C., and Ghoneim, A. (2012). The Euro-Mediterranean Partnership and Real Convergence. Journal of Economic Integration, 27(1), 80-116.

Phillips, P.C.B., and Sul, D. (2007). Transition Modeling and Econometric Convergence Tests. Econometrica, 75(6), 1771-1855.

Quah, D. (1996). Empirics for Economic Growth and Convergence. European Economic Review, 40(6), 1353-1375.

Ramajo, J., Márquez, M.A., Hewings, G.J.D., and Salinas, M.M. (2008). Spatial Heterogeneity and Interregional Spillovers in the European Union: Do Cohesion Policies Encourage Convergence Across Regions? European Economic Review, 52(3), 551-567.

Röller, L.H., and Waverman, L. (2001). Telecommunications Infrastructure and Economic Development: A Simultaneous Approach. American Economic Review, 91(4), 909-923.

Straub, S. (2011). Infrastructure and Development: A Critical Appraisal of the Macro-Level Literature. Journal of Development Studies, 47(5), 683-708.

World Bank. (2024). Digital Progress and Trends Report 2023. Washington, DC: World Bank.

World Bank. (2025). Africa's Pulse, No. 31: Improving Governance and Delivering for People in Africa. Washington, DC: World Bank. https://doi.org/10.1596/978-1-4648-2247-6