David Abdul Konneh received his Master's Degree in Electrical Engineering with a major in Renewable Energy Development and Management from the University of The Ryukyus, Japan in 2019, and is now awaiting the award of Doctor of Engineering in Electrical Engineering with a major in Interdisciplinary Systems Engineering in September 2024. He worked as Operations and Planning Engineer at Electricity Generation and Transmission Company of Sierra Leone (2015–2016) and as Maintenance Engineer for Sierra Leone's National Power Authority (2011-2014) just before the power sector was unbundled. During his professional career, he obtained multiple local and international training in Power systems Engineering in Sierra Leone, India and Japan. In 2016 September, He then moved to Japan to pursue his research interests in Renewable Energy Development and Management. His research topics mainly include: Renewable Energy Development, Management, Sustainability, Power Systems Optimization, Hybrid Energy Systems Development and Integration, Advanced Computational Techniques