Once a power plant is established hydropower is produced relatively cheap compared to all other forms of energy. Not only is hydroelectric power a cheaper form of energy, it is also more efficient than the use of fossil fuels. Many countries use inefficient processes and could reduce their energy consumption by converting to more energy-efficient ones, such as waterpower. Instead of oil and gasoline being burned, water is simply turning turbines and generating electricity. In terms of total production waterpower is America's leading renewable energy source.
Many countries have figures similar to the United States.
Waterpower is more efficient than all other forms of alternative energy sources. The most important factor is that it is a clean source of power. It produces no carbon dioxide, sulfur dioxide, nitrous oxides, or any other harmful air emissions. This is a much more efficient source of energy compared to the high pollution producing fossil fuels.