Energy generation

How a power plant works

A hydroelectric power plant is a facility that transforms hydraulic potential energy into electric energy. For this to happen, a natural hydraulic gradient is necessary, or one must be created through a dam, in order to catch and conduce water to the turbine. A hydroelectric power plant is made up of a dam, reservoir, power station, hydraulic circuit and elevated substation.

The reservoir is formed by damming the river water, by means of constructing a dam wall. The power plant’s spillway is constructed in the dam. This is where the excess water from the reservoir passes.  The power station is where the energy producing equipment is located.   The hydraulic circuit is composed of chutes, channels or tunnels that take the dam water to the turbines.