Importance of Renewable Energy Sources
- Renewable energy are energy sources which are infinite and will not run out. They include:
- Hydroelectric
- Wave/tidal
- Wind
- Solar
- Geothermal
- Biomass/waste
- Once in place with the exception of biomass/waste they do not produce any greenhouse gas emissions
- Greenhouse gases may be emitted in the production, construction and transport of the equipment
Increase in renewable energy
- Renewable energy is increasingly important in the global energy mix
- This is due to:
- Non-renewable fossil fuels will at some point run out and so they need to be replaced with another energy source
- The use of non-renewable fuels is damaging to the environment.
- Fossil fuels when burnt release greenhouse gases and the sulphur dioxide released causes acid rain
- Mining and drilling for fossil fuels can destroy habitats and damage the surrounding environment
- Increasing awareness of the impact of using fossil fuels has resulted in international pressure to reduce their use
- Countries wanting to reduce their reliance on imports of energy sources and improve their energy security
Advantages and disadvantages
- All renewable energy sources have advantages and disadvantages
| Energy Source | Advantages | Disadvantages |
| Hydroelectric |
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| Wave/Tidal |
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| Wind |
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| Solar |
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| Geothermal |
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| Biomass/Waste |
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Exam Tip
Remember reducing fossil fuel use is not as easy as simply switching to renewable energies. Although the costs are coming down renewable energy is often still more expensive than using fossil fuels and they are generally not as efficient. This means you need far more to produce the same amount of electricity.
