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ADVANTAGES: 1. Once a dam is constructed, electricity can be produced at a constant rate. 2. If electricity is not needed, the sluice gates can be shut, stopping electricity generation. The water can be saved for use another time when electricity demand is high.
Benefits of Hydropower. Water power offers a number of advantages to the communities that they serve. Below are just some of the benefits that hydropower has over other methods of providing energy. Because hydropower plants can generate power to the grid immediately, they provide essential back-up power during major electricity outages or disruptions. 2  In addition to a sustainable fuel source, hydropower efforts produce a number of benefits, such as flood control, irrigation, and water supply.