HYDRO ELECTRICITY

<body> <p>In a dam, the potential energy of water in the reservoir is transformed into kinetic energy during the fall. Water drives the turbine/generator which in turn generates electricity. Even a slight difference in the level of water, as in the case of large plain rivers, is enough to generate electricity. Hydraulic turbines can be generally classified as action runners (e.g. Pelton runners) or reaction runners (e.g. Francis and Kaplan runners). Runners are selected depending on the head of water and the flow. The efficiency of hydraulic runners oscillates between 80 and 90% </p> </body>