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By: Sean Wilkinson. Hydroelectric Power . Types of Hydroelectric Power . Impoundment The most common type of hydroelectric power plant is an impoundment facility. An impoundment facility, typically a large hydropower system, uses a dam to store river water in a reservoir. Diversion
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By: Sean Wilkinson Hydroelectric Power
Types of Hydroelectric Power • Impoundment • The most common type of hydroelectric power plant is an impoundment facility. An impoundment facility, typically a large hydropower system, uses a dam to store river water in a reservoir. • Diversion • A diversion, sometimes called run-of-river, facility channels a portion of a river through a canal or penstock. It may not require the use of a dam. • Pumped Storage • When the demand for electricity is low, a pumped storage facility stores energy by pumping water from a lower reservoir to an upper reservoir. During periods of high electrical demand, the water is released back to the lower reservoir to generate electricity.
Small/Micro Hydroelectricity • Often times household power generators • Power generated from nearby stream or small river. • Pelton Wheel • Low Flow Streams • .25-36 KWh/day • Submersible Propeller • Fast Flow Streams • 1.5-2.5 KWh/day
Large scale Hydroelectricity • Works like most power plants • Water flow spins turbine blades which • Father the water falls the more energy can be produced. • Used for large scale energy production
Pros • A renewable energy source • Creates a large amount of power • Produces no greenhouse gasses
Cons • Dams are extremely expensive to build • Flooding of large areas of land to create reservoirs destroys natural habitats • Can change the natural water table of the area ( ie: Aswan dam )
