Solar energy is the other energy source. Each year the earth receives from the sun a huge total of 5 × 1020 k.cals of energy. Solar energy, that is the main source of all energy forms on the earth, is the renewable form of energy.
Solar technologies are widely categorized as either passive solar or active solar based on the way they capture, convert and share solar energy. Active solar methods include the use of photovoltaic panels and solar thermal collectors to harness the energy. Passive solar methods include orienting a building to the Sun, chosing materials with favorable thermal mass or light dispersing properties, and designing spaces which naturally circulate the air.
Benefits of solar energy:
- Solar energy is a type of universal, decentralized and non-polluting energy.
- It aids considerably in sustaining the ecological balance via the procedure of photosynthesis and green house effect.
- It has none of the demerits found in the combustion of fossil fuels like oil, coal, or gas.
- infinite free energy
Future of solar energy:
A benefit to solar power is that it can decrease expenses. It can also be portable. If one is backpacking in the wilderness or traveling far from power grids, solar power can give a means of powering electronic equipment. The other benefit is, obviously, the lack of pollution formed by solar energy production. However, if all of our electrical energy were generated by such means, we may not be worrying about global warming and the other destructive affect of pollution on our atmosphere.
Such threats to our atmosphere also pose a threat to mankind. Solar power could be generated to a point where it, all along with other forms of renewable energy, would substitute harmful means of electricity generattion.
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