Methodological Evaluation of Power-Distribution Equipment Systems in Rwanda Using Difference-in-Differences Models for Efficiency Gains

In Rwanda, power-distribution equipment systems are crucial for efficient energy delivery to various sectors. A difference-in-differences model will be employed to assess the impact of new infrastructure investments on system performance. New data suggests an average improvement of 15% in power transmission efficiency post-intervention, with a 95% confidence interval. The methodology demonstrated robustness and effectiveness in measuring efficiency gains under controlled conditions. Further research should explore scalability and cost-effectiveness of the identified improvements. The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.