What type of energy does hydroelectricity have?

Answer 1

The type of energy it is made up of is water, but through some machines, it turns into electricity. That is why we call it hydroelectric energy.

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To amplify a little, the water is impounded behind a dam to create a constant depth, hence pressure in that which is fed to the turbines. These consist of bladed rotors spun by either powerful jets of water striking the blades, or by the water flowing past them (think of a propeller, but in reverse) - depending on the type used. The turbine is connected to, so rotates, the alternator - the electricity generator itself, a set of wire coils rotating across a strong magnetic field. The electricity is led out to suitable Transformers and switch-gear for distribution.

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So the energies involved are the impounded water's Potential Energy which is converted to mechanical Kinetic Energy as it flows down the pipe to the turbine; that kinetic energy is transferred to the turbine and alternator; the alternator converts that energy in turn to Electrical energy.

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No energy conversion system is 100% efficient, so a little of the potential energy at the start becomes lost by friction and by electrical losses within the alternator. This wasted energy has to go somewhere because you cannot create or destroy energy according to the Universe's simplest and most important Law, so it is converted to heat lost to the water and the air.

Answer 2

it contains water energy