The primary difficulty with solar power and indeed with its cousin wind power has been one of efficiency. There is more than enough energy hitting the earth in the form of solar radiation to meet power needs of our species. Estimates indicate that there is four times as much wind energy available for our use as the species uses every year. Other source can make more energy power but it didn’t mean, it’s proper for your useable. Solar power is even more dramatic, the sun showers the planet with more energy every day than we use in a year. So the difficulty has never been the availability of sun and wind, they are readily available.
The difficulty with solar panels has always been the efficiency of power transfer. You see, it is one thing to say that the sun showers us with several terawatts of power every day, and another thing to put that power to work for us. The majority of modern human power use is electric, this is easy and more enable for many devices. Converting the radiant solar energy is the way to usable electric current. This presents a technological hurdle for us, because for most of our history, our electric conversion has been turbine based. Solar panels however, don’t utilize a turbine at all. Instead sunlight striking silicon crystals creates electric potential. If those crystals are backed by an array, this potential can be harnessed to create a current and lose efficient.
But the more important thing is “enough”. The earth doesn’t maintain our main energy source ever thought we were a few using. It good for using solar power in sometime as alternative energy and it will be save the earth.
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