Hydroelectricity is a versatile form of electricity with many forms of power generation, all stemming from water and its stormy power. It is completely renewable and relies exclusively on the natural water cycle. Invented more than 2,000 years ago, hydroelectric power (also known as hydroelectric power) is a thousand-year-old technology used to grind grain and has been proven by the test of time. Currently, many people are discussing the feasibility and renewability of hydroelectric energy. This document is intended to provide information for you to think about. Hydroelectric power harnesses the power of water, whereby even harnessing a small fraction of the energy produced by oceans and waterways could provide exponentially more energy than is needed to run the entire earth. Hydropower has also proven, in many respects, to be economically feasible, but initially expensive. Many hydroelectric plants require little maintenance and can provide energy for centuries, showing enormous potential as a continuously renewable energy source. While hydropower has many positive impacts on the ever-deteriorating environment, it can also contribute to negative environmental effects. There have been many recent and long-term developments in the field of hydropower, and scientists are continually working to improve efficiency and explore new pipelines for construction of all types of hydropower. Today, hydropower provides a large portion of the world's electricity demand. Although hydroelectric power is in decline in some places, innovations and increased demand are increasing the need for newer, more efficient renewable energy. Today approximately 20% of the world's energy is produced by hydroelectric energy. There are four main types of hydropower, each with their own benefits… half the paper… profit that can be achieved from other power plants within the system due to the greater efficiencies achieved.” (16) This, in effect, means that hydropower not only provides a renewable and sustainable source of electricity and income, but can also be multi-level and meet more than one need. However, one of the repercussions of hydroelectric development is the impact on the inhabitants of the area swallowed by the dam's water. However, hydropower can provide jobs in construction and engineering, bringing more people to the affected area. One of the most important aspects of hydroelectric energy is its renewability. From its basic principles, hydroelectric power is a completely renewable form of energy. It relies solely on the natural water cycle, something that wouldn't end if all our solar and geothermal energy didn't disappear. However,