Hydroelectric power produced by hydroelectric dams accounts for 20% of the world’s total production of electrical energy. Although human beings have been using the power of water for around 2000 years now, the idea of generating electricity from it only started in the mid-20th century.
Hydroelectric dams are a very reliable source of energy and there are very few fluctuations in how much power they produce. Should more energy be required, the output is able to be adjusted. If a nation has an abundance of water, they are able to use hydroelectric dams as a base source of energy.
The hydroelectric energy requires a low cost of maintenance and operation. Since hydroelectric power has few parts, replacement may be in less necessary. Moreover, the dams are for long term use, therefore, the supply of energy is also for long time durations, and a long term for the saving. Disadvantages of Hydroelectric Energy.
Dams are built for various purposes; the major function includes hydroelectric power generation, drinking water supply, irrigation, flood control, recreation etc. But the different incidents and studies done by several researchers proved that these large dams made for these purposes, also simultaneously pose substantial threats to the life, property and the environment throughout their lifecycle.
Hydroelectricity is electricity produced from hydropower.In 2015, hydropower generated 16.6% of the world's total electricity and 70% of all renewable electricity, and was expected to increase by about 3.1% each year for the next 25 years. Hydropower is produced in 150 countries, with the Asia-Pacific region generating 33 percent of global hydropower in 2013.
Advantages of Dams. Advantages of dams are numerous, that is the reason so much money and work goes into building and maintaining them. Some of the advantages are: Electricity is produced at the constant rate with the help of hydroelectricity or hydroelectric power.
Positive and negative impacts of dams. Dam building is not a modern concept and is almost as old as the human civilization; In fact, some of the earliest dams were built around the same time as the first cities came into existence.
Hydroelectric power is a domestic source of energy, allowing each state to produce their own energy without being reliant on international fuel sources. The energy generated through hydropower relies on the water cycle, which is driven by the sun, making it a renewable power source, making it a more reliable and affordable source than fossil fuels that are rapidly being depleted.