This news talks about the positive and negative sides of using hydro power as the means of energy.
Hydro power can generate electricity without emitting greenhouse gases
but can cause environmental and social harms, such as damaged wildlife
habitat, impaired water quality, impeded fish migration, reduced
sediment transport, and diminished cultural and recreation benefits of
rivers.
Sources say that, reducing hydro power generation in order to restore natural river
conditions is often considered too costly by hydro power operators, but
those costs might be lessened by taking advantage of complex electricity
markets and providing grid-regulating ancillary services, especially in
regions with high penetrations of renewable energy like wind and solar.
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