Hydroelectric systems convert the energy embodied in flowing water into electrical energy Free Essay, Term Paper and Book Report
Hydroelectric systems convert the energy embodied in flowing water into electrical energy. Micro-hydroelectric systems are those that generate less than 20 megawatts of electricity. These are small-scale systems with little negative environmental impact and can be implemented by private individuals and small companies. Pumped storage allows excess energy to be stored for later use. Run-of-the-river plants derive energy from a water flow without disrupting it as much as conventional hydroelectric power plants. Unlike conventional hydroelectric, micro-hydroelectric systems use no dams or very small dams that impound little water. Because only small diversion weirs or intakes are necessary for micro-hydroelectric systems, they do not typically interfere with fish migration or threaten stream ecology.
Power in water
The power available from a micro-hydroelectric system depends on the available elevation change, the stream or river flow rate, and the overall micro-hydroelectric system efficiency. Overall system efficiencies of 30% to 60% are common in micro-hydroelectric systems.
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