Hydropower is essentially a product of solar energy. The sun begins
the hydrologic cycle by evaporating water from land and sea. Hot
air, which rises over the water, carries moisture to the land as
rain or snow. Much of the water falls on high lands and drains into
streams and rivers as it flows back down to the sea. This flow over
the different elevations can be harnessed by a hydroelectric
project to produce electricity. Hydroelectric generation is the
cleanest source of electrical energy available and is a renewable
resource since the natural flow of water is a continuous process.
It is almost pollution free and can provide power without producing
waste. It is easy to control and is highly efficient.It is a
technology that has been utilized throughout the world, by a
diverse range of societies and cultures, for many centuries.
Micro-hydro power is the small-scale harnessing of energy from
falling water; for example, harnessing enough water from a local
river to power a small factory or village.
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