why is hydel power more important the other conventional sources of energy

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The following are the advantages of hydel power over other conventional sources of energy like thermal energy that will explain the reasons of its superiority.

Conventional Energy Hydel Power

Initial costs are low but maintenance high Initial costs are high but maintenance costs lower

Labour intensive Needs little labour

Leads to water and air pollution Creates no pollution

By-products detrimental to environment No by-products created

Non-renewable Renewable

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Conventional Energy	Hydel Power
Initial costs are low but maintenance high	Initial costs are high but maintenance costs lower
Labour intensive	Needs little labour
Leads to water and air pollution	Creates no pollution
By-products detrimental to environment	No by-products created
Non-renewable	Renewable