Sources of energy
Energy sources are categorized as renewable or non-renewable.
- Renewable energy is collected from renewable resources. A source of energy is considered renewable if it comes from natural sources or processes that are constantly replenished. Examples are solar (from the sun), wind, water, geothermal (from the earth) and biomass (from organic materials).
- Non-renewable energy sources don’t replenish, and are formed when prehistoric plants and animals died and were gradually buried by layers of soil rock. The kind of fuel that was created varied depending on the conditions like what kind of organic material (from plants or animals), how long it was buried, at what temperature and under what pressure. Types of non-renewable energy are natural gas, coal and oil.
What are sources of renewable energy?
Renewable energy sources are plentiful, sustainable and kind to the environment. And the great thing is, they'll never run out!
Here's a quick overview of renewable energy sources – you can find out more on our Renewable Energy page.

Wind Energy
- Energy in moving air, harnessed by wind turbines
- Used to produce electricity

Solar Energy

Biomass

Hydropower
- Energy in the force of moving water
- Captured by dams in hydropower plants and converted to electricity

Geothermal Energy
- Energy that comes from heat generated by the Earth
- Used to produce electricity and can provide heat and hot water.
- Energy contained in organic matter
- Used to generate electricity
- Energy that comes from the sun
- Converted into heat, light and electricity
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A mix of energy sources are used around the world.
Sources of energy
The energy we use to power everything from our homes to schools and workplaces comes from a variety of different sources. These can be broken down into renewable and non-renewable energy sources.
A renewable energy source is any natural resources that can replace itself quickly and dependably. A non-renewable energy source is a source with a finite supply (in other words, it'll eventually run out).
Burning Questions
What are sources of renewable energy?
Renewable energy sources are plentiful, sustainable and kind to the environment. And the great thing is, they'll never run out!
Here's a quick overview of renewable energy sources – you can find out more on our Renewable Energy page.

Wind Energy
- Energy in moving air, harnessed by wind turbines
- Used to produce electricity

Solar Energy
- Energy that comes from the sun
- Converted into heat, light and electricity

Biomass
- Energy contained in organic matter
- Used to generate electricity

Hydropower
- Energy in the force of moving water
- Captured by dams in hydropower plants and converted to electricity

Geothermal Energy
- Energy that comes from heat generated by the Earth
- Used to produce electricity and can provide heat and hot water
What are sources of non-renewable energy?
Non-renewable energy comes from sources that have a limited supply. Most non-renewable energy sources are fossil fuels, which are generally bad news for the environment.
Here are some examples of non-renewable energy sources – check out our Non-Renewable Energy page to learn more.

Coal
- Comes from the remains of plants that died hundreds of millions of years ago
- Has the highest level of carbon of all fossil fuels

Oil
- Comes from the remains of plants that died hundreds of millions of years ago
- Can be extracted and refined to make gasoline, diesel and jet fuel

Natural Gas