African Textile Engineering | 24 January 2008
Methodological Evaluation of Power-Distribution Equipment Systems in Tanzania Using Difference-in-Differences for Efficiency Analysis
K, a, m, a, n, d, a, C, h, i, t, u, u, d, o
Abstract
In Tanzania, power distribution systems are critical for economic development but often suffer from inefficiencies. A difference-in-differences (DiD) model is employed to assess the impact of new distribution equipment on system performance, utilising pre-post data from selected regions as control and treatment groups. The DiD approach reveals an average efficiency improvement of 15% in treated regions compared to controls, with notable gains in rural areas where access was previously limited. This methodological framework provides a robust tool for identifying and quantifying efficiency improvements in power distribution systems. Further research should explore scalability and cost-effectiveness of the DiD model across different regions and sectors. power distribution, difference-in-differences, efficiency analysis, Tanzania The maintenance outcome was modelled as $Y<em>{it}=\beta</em>0+\beta<em>1X</em>{it}+u<em>i+\varepsilon</em>{it}$, with robustness checked using heteroskedasticity-consistent errors.