Write about importance, environmental aspects, The current status and future projections for hydropower?

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Mechanical Engineering

Write about importance, environmental aspects, Thecurrent status and future projections for hydropower?

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Hydropower is one of the most efficient power generation technologies which are carbon free and use inexhaustible resources to produce the energy The prime driver is the force of gravity and the water used to drive this power is nondestructive Hydropower do not pollute the air we breathe in the way that the energy source does not produce any air pollutants Unlike thermal power plants for example there are no gaseous of fly ash emissions emitted during the production The fact that hydropower often replace fossilfired generation it can therefore also be said that it is reducing the problem with acid rain and smog The economic valuation of environmental impacts of renewable energy sources RES has become an important issue in economics especially because of the evident and increasing need to value damages caused by human activity either for awarding compensation or for planning purposes It is also recognized the importance of the economic valuation of environmental impacts as an important requirement of costbenefit analysis CBA which plays an important role in the public decision process Economic valuation methods provide monetary estimations of environmental health and social impacts so that they can be incorporated into CBA There may also be negative impacts Lately the impact on the ecological aspects from the power plants has received attention In the report from World Commission on Dams it is stated that dams will have effects eg on the terrestrial ecosystem and biodiversity the flow regime migration of aquatic organisms and can cause emissions of greenhouse gases Hydropower affects the flow regime migration of organisms and transport of nutrients and sediments The hydropower projects have several impacts on the environment Water quality decline is one of the impacts of hydropower and water quality may be affected around a hydropower plant Water discharged from a reservoir can be of a different composition to the water that is flowing into a reservoir The other impacts of hydropower plant are migrations barriers Hydropower dams impede the flows of rivers and thereby affect the habitat of various aquatic lives Migratory animals require different environments for their different phases of their life cycle Different stages are reproduction production of juveniles growth and sexual maturation These different stages take place in different environments for different fishes Even if hydropower is a renewable energy See Answer

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