The study has the intent to assess the significance of PMâ€™s leadership attributes for successful projects in EEP. By doing so, the study addresses the importance of the PMâ€™s personal traits, emotional intelligence, technical and soft skills, leadership style, and ethical value for the success of the implementation of projects in EEP. The methodology used for the study is a mixed approach using both quantitative and qualitative methods. Both primary and secondary data were collected to achieve the intended research objectives using a self-administered questionnaire survey and interview. Out of 50 questionnaires distributed to project managers, senior engineers, site mangers and design mangers engaged on different projects in EEP, 42 questionnaires were fully filled and returned. Descriptive and inferential statistics are used to analyze the PMâ€™s leadership attributes, project success, and their relationship. The study found a strong positive correlation between transformational leadership and project success, but a very low correlation between transactional leadership style and project success. Furthermore, the other 5 leadership attributes of the study, namely: personal trait, technical skill, soft skill, emotional intelligence, and ethical value, have strong association with project success in EEP.. The study concluded that leadership attributes of PMs are deliberately important for the success of the project in EEP. The study findings imply that EEP should be considerate of these leadership attributes in recruiting and empowering PMs and leadership should not be isolated from the organizationâ€™s project management practice aiming at maximizing project success and developing empowered project leaders in the energy sector.