Essay On Power Generation

Power generation consists of technologies used for electricity production from energy sources.

The energy sources include renewable energy and nonrenewable energy resources. Renewable energy sources being those energy flows that occur naturally and repeatedly in the environment can be harnessed for human benefit including power generation. The ultimate sources of most of these energies are the sun, gravity, and the earth’s rotation. Non renewable energy sources are those which are obtained from static stores of energy that remain bound unless released by human interaction. These include nuclear fuels and fossil fuels; coal, oil and natural gas etc.

The energy is initially an isolated energy potential and external action is required

To quantify the benefits of hydroelectric dams is a complex task, having an important role in energy security, yet producing sizable impacts on the local environment and communities. Now a day Ethiopia built up alternative energy resources in different areas. So, Water had power by both its motion (kinetic energy) and by its position (potential energy). To make this energy usable, prime movers such as water wheels are required. Earlier in the history of energy development and use, water wheels provide power by direct connection or with pulley and gear systems to drive various machines, such as grist mills and textile mills. Moreover, since ancient times, water wheels have been used for lifting water from a lower to a higher elevation in irrigation systems. In this fast developing world however the way of consumption of water power is changed from its direct way to indirect way, a more efficient and easily usable electrical energy. In the case of hydropower electricity production, the prime movers are water wheels or turbines. These prime movers convert the power available in the water to rotational/mechanical energy of the shaft of the generator. Then the generator acting as an energy converting unit converts the rotational/mechanical energy to electrical energy. This is the principle of hydropower engineering, the technology involved in converting the pressure energy and kinetic energy of water into electrical