This study evaluates power-distribution equipment systems in Tanzania, focusing on improving efficiency through panel data estimation methods. Panel data analysis was employed to estimate the impact of various factors on system efficiency. The study utilised a fixed effects model with robust standard errors for accounting for potential unobserved heterogeneity. The panel data revealed that investment in maintenance and upgrading equipment led to an increase in efficiency by approximately 15% over a two-year period. This replication validates the effectiveness of targeted investments in improving power distribution system efficiency, offering practical recommendations for policy-makers. Policy-makers are advised to prioritise funding for regular maintenance and technology upgrades to enhance efficiency and reliability of power distribution systems. Power Distribution Systems, Panel Data Analysis, Efficiency Gains, Tanzania The maintenance outcome was modelled as Y₈ₓ=₀+₁X₈ₓ+uᵢ+₈ₓ, with robustness checked using heteroskedasticity-consistent errors.
Hailu et al. (Mon,) studied this question.