NASA estimated that the Sun gives or irradiates the earth 174 Petawatts (Pw) of solar energy every day. Out of this approximately 30% of energy is reflected back to space, and another major share is absorbed by our atmosphere. Even if we get only 10% of this energy which is about 17.4 Pw per day, it is still more than the whole daily energy requirement worldwide.
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photo credit: Fr Antunes
If you ever wanted to save electricity and improve the comfort of your home without using any high-tech gadgets, then passive solar design is the answer.
Passive solar design is a technique of using the sun to naturally heat and light up your home or office. This is achieved by using various [...]
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photo credit: Hamed Saber
On a clear day, at high noon, the sun produces 1000 watts per square meter. Unfortunately, even with the best solar panels no one can harness all of this power. Just how efficient are solar panels at collecting solar energy?
Though pure sunlight is an enormous amount of energy, solar panels cannot [...]
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