Financial development, economic growth, and energy consumption in SADC region

The paper presents an empirical study of the relationships between financial development, economic growth, urbanisation and energy consumption in the Southern African Development Community for the years 1980 to 2023. The researchers applied the Bayesian approach via Metropolis-Hasting and Gibbs samples as the MCMC methods, and Dumitrescu and Hurlin (2012) and Diagnostic tests to check the causality among all the variables in question and accuracy of the data and model. Over time, there has been a significant positive correlation between financial development, economic growth, industrialization, urbanization, and energy consumption. The results of the Granger causality test showed a unidirectional causal relationship between financial development, urbanization, and energy consumption supporting the alternative hypothesis that there is a relationship between financial development and energy consumption in the Southern African Development Community. It has been found that there is a Bi-directional (feedback) Granger causal relationship between economic growth and energy consumption in the Southern African Development Community; this also supports the alternative hypothesis. The results align with endogenous growth theory, which emphasizes that economic growth is driven by internal factors such as capital accumulation, innovation, and improved efficiencies, where energy plays a significant role. This also supports the view that energy infrastructure development is vital for sustaining economic growth in the region. The diagnostic tests confirm that the model is correct.