Any country's ability to run its transportation and industry efficiently and affordably is a key factor in its ability to thrive economically. East Africa's nations is among the developing country including Tanzania. In 2022, August its population was 61million people and was classified as a middle-income country in 2020, with a growth rate of 4.3 %( World Bank, 2020). Despite having natural resources including 38GW from hydro, the country has experienced considerable load shedding of electricity supply for the past ten years which has slowed economic progress (Kichonge, 2018). Only 707MW of the total capacity of 1605MW in the country has been used to generate power while the peak demand is around 1600MW for a day, falling short of the worldwide goal of producing carbon-free energy by 2050. However, the government is concentrating on generation power mix to raise installed capacity to 10GW by 2035 in order to ameliorate the challenge of power scarcity through its electricity generation master plan. Additionally, the government can spend money building hydroelectric plant which would benefit from the country's southern region's year-round availability of several river streams. The Morogoro region in the southern part of the nation is home to the proposed study of the Upper Kihansi hydropower 200MW grid-connected, which will use storage dam technology in the river Rufiji, increase installed capacity to the grid, accelerate economic growth of the nation, and help to reduce greenhouse gas emissions as part of the climate change agenda. The upper Kihansi 200MW hydropower project is one of the domestic option for low-cost operations compared to thermal power plant. It is also clean energy, and this study uses RETScreen Expert modelling to perform the feasibility of the project. It will use potential status of hydropower in Tanzania for the development of future generation.