Human devices use potential energy to store energy, whereas kinetic energy is potential energy in motion. Both types of energies can be measured in Joules (J).
Human devices generate and use different sources of energy, which can be classified into renewable sources (e.g., solar, hydraulic, winds, etc) and non-renewable sources (e.g., nuclear energy) of energy.
For example, a hydroelectric power plant transforms the potential energy stored in water reservoirs (e.g., a lake) into mechanical energy (a type of kinetic energy) when this energy is released from the water reservoir and flows through a turbine.
Subsequently, this type of kinetic energy is then used to generate electricity.
On the other hand, a nuclear power plant uses the potential energy that is stored within the nuclei of atoms to produce kinetic energy by a process known as nuclear fission.
This process (nuclear fission) releases energy in the form of heat (i.e., thermal energy).
Subsequently, this type of kinetic energy (heat) is used to generate steam, which then moves turbines to generate mechanical energy and finally generates electricity.
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