Hydropower It dates back to the beginnings of the electric power industry more than 100 years ago In us about 7% of the electric power now generated comes from damming the rivers as they flow to the ocean and then releasing the water to turn turbines connected to electric generators In other countries electricity from water power Norway 99% Nepal 95% Brazil 93% New zealand 78% Canada 58% Sweden 50% 复旦大学环境科学与工程系 Department of Environmental Science and Engineering, Fudan UniversityIt dates back to the beginnings of the electric power industry more than 100 years ago. In US.: About 7% of the electric power now generated comes from damming the rivers as they flow to the ocean and then releasing the water to turn turbines connected to electric generators. Hydropower In other countries: electricity from water power Norway 99% Nepal 95% Brazil 93% New Zealand 78% Canada 58% Sweden 50%