Study of the Effect of Climate Variability on Hydroelectric Power Generation Capacity: The Case of the Garafiri Dam in Guinea

Hydroelectric power production from Garafiri dam and rainfall are essential elements with the observation of hydroelectric power production in West African power system, particularly in Guinea. This article focuses on the study and the influence of climate variability on hydroelectric power production at Garafiri dam over 16-year period (2008-2023). The aim of this work is to show the correlation between rainfall anomalies and hydroelectric power production at Garafiri dam. The method used consists of calculating precipitation anomalies at Garafiri site and those for the production of hydroelectric power from Garafiri dam over the study period. This approach led us to calculate the anomalies, leading to the study on climatic variability, in order to establish correlation between rainfall and hydroelectric power dam’s production. The trend with the correlation found made it possible to carry out a significance test between these two variables. These results clearly show that rainfall in Garafiri site increases hydroelectric power production and vice versa, which explains the interdependence between these two parameters, i.e. climatic variability and hydroelectric power production.