# Electricity generation

Electricity is generated in a variety of ways. There are two main categories for generating electricity: non-renewable and renewable energy resources.

## Non-renewable energy resources

Most non-renewable energy resources use fossil fuels (coal, oil and natural gas) to generate electricity. In fossil fuel generators, the of the fuel is burned to release heat energy.

Below is a flow diagram that describes each energy change that happens inside a fossil fuel station.

The transfer of energy from fossil fuels to electricity though movement

Nuclear power stations make use of the energy stored inside unstable atoms. A similar sequence of energy changes occurs inside a nuclear power station. Instead of chemical energy being burned to produce heat, nuclear energy itself is used to heat water.

Fossil and nuclear fuels are both non-renewable because the sources of these fuels cannot be replaced and will eventually run out.