Solar energy involves capturing and harnessing the Sun’s energy. This can be done in two ways:
- Directly, using the heat and light it carries with it
- By converting its heat and light into other forms of energy, such as electricity
Indirectly, all forms of energy are derived from the Sun. For example, fossil fuels contain energy stored in plants, created from the Sun’s energy by photosynthesis, which have then rotted into peat or coal. Wind energy is generated by the sun creating differences in the temperature of air. However, these are not defined as solar energy, since the energy is not taken straight from the sun.
Solar technology is constantly developing, enabling it to be cheaper and more effective – including generating electricity, even on cloudy days.
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