In the modern world, almost everything requires electricity to work. In this guide, we are going to look at the various forms of energy resources.

There are 3 types of energy resources:

  1. Non renewable energy resources
  2. Renewable energy resources
  3. Potentially renewable energy resources

Non renewable energy resources:

  • Oil
  • Natural Gas
  • Coal

Renewable energy resources:

  • Solar energy
  • Wind energy
  • Tidal energy
  • Geothermal energy
  • Hydroelectric energy

Potentially renewable energy resources

  • Energy from biomass

 

Energy resource Notes Advantages Disadvantages
Solar

This is the form of energy which can be harnessed using photocells or solar cells.

Solar panels containing these cells are exposed to sunlight. They have the ability to trap sunlight and convert the light energy to electrical.

Hence electricity is generated

1.    Environment friendly

2.    Useful in remote locations

3.    Can be used along with a battery so that the stored energy is available in hours of darkness

4.    Is cheaper and reliable

 

1.    Extremely expensive to buy at first

2.    Needs to be continuously maintained

3.    Isn’t reliable to use during cloudy weather

4.    Is a dilute source of energy; it requires scores of solar panels to power a small house with electricity

Wind

This is the form of energy which is harnessed when the wind moves the turbines of a wind turbine.

The continuous movement induces a current in the motor of the turbine, thus generating electricity.

1.    Environment friendly

2.    Useful in remote locations

3.    Can be used along with a battery so that the stored energy is available for later use

4.    Is cheaper and reliable

 

1.    Extremely expensive to buy at first

2.    Needs to be continuously maintained

3.    Not reliable enough; depends on wind speed

4.    Is a dilute source of energy; it requires scores of wind turbines to power a small house with electricity

 

Tidal

This is the form of energy which is harnessed using the up and down movement of tides.

The up and down movement of waves is used to propel a motor; unfortunately this is extremely tough and is still under research and development.

1.    Environment friendly

2.    No carbon emissions

1.    Is under development and research

2.    Is extremely tricky to harness

Geothermal

This is the form of energy which is harnessed using the heat under the earth’s crust.

Pipelines full of water are led into the earth’s crust

The heat inside transforms the water to water vapour.

The water vapour is used to propel huge turbines to generate electricity.

1.    Environment friendly

2.    Is extremely efficient

3.    Is a concentrated source of energy

4.    Is extremely reliable

1.    May only power regions where volcanic terrains are available.

2.    Extremely expensive to set up.

Hydroelectric

This is the form of energy which is harnessed when:

High pressurised water is bombarded over to turbines

This induces a current in the motor and generates electricity.

1.    Environment friendly

2.    Concentrated source of energy

3.    Is highly reliable

1.    Can make thousands homeless as their homes need to be shifted or else they would get flooded.

2.    Expensive to set up

 

Coal

Energy from these resources is obtained when:

They are burnt to vaporise water.

The water vapour is collected, pressurised and sprayed over large turbines.

This leads to electricity being generated.

1.    Cheap

2.    Widely used

3.    Easily available

4.    Efficient

5.    Concentrated source of energy

1.    Non renewable

2.    Pollutes the environment

3.    Causes acid rain

 

Oil 1.    Cheap

2.    Widely used

3.    Easily available

4.    Efficient

5.    Concentrated source of energy

1.    Non renewable

2.    Pollutes the environment

3.    Causes acid rain

 

Gas 1.    Cheap

2.    Widely used

3.    Easily available

4.    Efficient

5.    Concentrated source of energy

1.    Non renewable

2.    Pollutes the environment

 

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