Abstract: The purpose of this study was to examine the impact of project management maturity on service delivery of the rural electrification project in Bugesera District, Rwanda. This research project centered on the three specific objectives namely; to assess the effect of integration management, cost management and quality management on service delivery in rural electrification project in Bugesera District. The study serves as a guideline for project management experts and stakeholders. Findings would be used to benchmark future projects regarding project management maturity and service delivery.