Having access to modern energy sources is essential for economic development and livelihood improvement. Access to modern energy supports both income generation activities and the national development agenda through improving education, reducing indoor air pollution, and enhancing environment sustainability. The Ethiopian energy sector faces the dual challenges of limited access to modern energy and heavy reliance on traditional biomass energy sources to meet growing demand. This study develops the first-ever TIMES model-based assessment for Ethiopia to identify least-cost solutions for alternative technology selection over the next 36 years (2014-2050) to meet the projected electricity demand. It identifies alternative energy development pathways applying the TIMES modelling framework to meet Ethiopia’s rising electricity demand while improving energy security, promoting access to modern energy, and mitigating greenhouse gas (GHG) emissions.