- Solar Energy: relies on the nuclear fusion power from the core of the sun.
- Wind power: can be used to pump water or generate electricity, but requires extensive area coverage to produce significant amount of energy.
- Hydroelectric energy: this form uses the gravitational potential of elevated water that was lifted from the oceans by sunlight.
- Biomass energy: energy harnessed from materials with plant or animal origins.
- Hydrogen and fuel cells: hydrogen can be burned as a fuel, typically in vehicles, with only water as the combustion product.
Advantages of Renewable Energy
- Renewable energy is eco-friendly; it is a clean source of energy, it has low to zero carbon in the greenhouse emissions. Fossil fuels emit high level of greenhouse gases and carbon dioxide, which are greatly responsible for global warming.
- It is a renewable resource
- Renewable energy has stabilized global energy crisis; change up to renewable sources of energy means stability of energy prices across the glob. This is because the cost of installation of renewable energy technologies is stable, as opposed to fossil fuels experience increase and decrease of energy prices depending on the certain inflation and availability of the resource.
Disadvantages of Renewable Energy
- It is difficult to generate the quantities of electricity that are as large as those produced by traditional fossil fuels-based energy generators.
- Renewable energy can be unreliable; it depends on the weather (for e.g. sun and wind) to be able to harness any energy. In case atmospheric conditions are not good enough, renewable energy technologies would lack the ability to generate any electricity.
- Low-efficiency levels; renewable energy technologies are still significantly new to the market, meaning they still lack the much needed efficiency. This poses forecast problems and investors may shy away from investing their money for fear are not getting returns pretty quick.
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