The diagram is illustrating the process of hydro-electric power generation to produce electricity from water. The process can be divided into two parts i.e., the natural process and integration of mechancial engineering framework.
The sea water through the process of evaporation facilitated by sunlight stored in rain clouds results in rain and stored in large reservoir controlled by a dam. This is the first part where the water preserved in a controlled fashioned. The process is designed by following a recycling pattern to channelized the water to flow towards the reserviour again after hitting the turbine.
In the second phase, the stored water is released with a pressure towards the turbine which produces the energy, converted into electricity which is then transferred to the transformer station. The station is connected with various types of electricity users which includes houses, factories, schools, and hospitals etc. In this way the electricty is distributed to the consumers.
