The construction of dam to generate hydroelectricity can be a very expensive and does have significant environmental consequences as it requires large areas of land to be flooded. However, once the dam is built, the water is a ‘free’ and renewable resource and has potential to generate a significant amount of electricity, with no waste and low emissions.
It is also considered a reliable source of energy compared to other renewables, such as wind and solar. This is because the flow of water can be controlled to meet with high demand and electricity can be produced constantly. For more general information about hydroelectric power developments, please see the links in this section.
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