Previous hydrological researches of the surface watercourse system in Montenegro imply quite high watercourse water capacity compared to relatively small territory of Montenegro. This paper systematizes theoretical and remaining technically feasible hydropower potential of the major surface watercourses and their tributaries, in Montenegro. Analyses are based on the results of the most recent analysis of the theoretical hydropower potential of the specialized studies and projects for development of strategic basis and urban plan of Montenegro. Montenegro has such a lot of hydropower potential at its disposal that it could be among the top hydropower producers in the world, while retaining control over the ecological and social environments. From about 9.8 TWh/annually of linear potential on larger water streams, about 5.5–6.1 TWh/annually is already categorized (or soon will be) as economically usable potential.