ELECTRIC POWER STATIONS THAT USE NON-RENEWABLE ENERGY SOURCES
There are two types: Thermal power stations and nuclear power stations.

THERMAL POWER STATIONS
Thermal power stations use fossil fuels to produce thermal energy. Than the thermal energy is converted to mechanical energy, in order to generate energy.

Combined-cycle power stations

A combined-cycle station is more efficient than single-cycle stations because it has two systems that produce more energy.
The first system burns natural gas with compressed air, and the gases that it produced, they turn a turbine.
The second system uses the steam from the first system. That steam turns another turbine to produce more electricity.

NUCLEAR POWER STATIONS
A nuclear power station is a thermal power station that uses a nuclear reactor to produce heat. The reactor uses radioactive material as fuel.