Power distribution systems in Kenya face significant challenges in reliability and efficiency, particularly in rural areas where access to electricity is limited. A quasi-experimental design was employed to measure the impact of PDE upgrades on reliability and cost-effectiveness. Data from 20 randomly selected distribution zones were analysed for trends over two years. There was a significant increase (p < 0.05, 95% CI [1.3%, 4.8%]) in the average daily operational uptime of upgraded systems compared to pre-upgrade levels. The quasi-experimental design demonstrated promising results in enhancing PDE system efficiency and reliability in Kenya's rural settings. Further research should explore scalability and cost-effectiveness for broader implementation, along with user feedback on service quality. Power Distribution Systems, Quasi-Experimental Design, Efficiency Gains, Rural Energy Access The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.