For as long as we can remember, oil has been the key source to fueling factories, heavy machinery, vehicles, and airplanes. However these days, investors are looking at renewable energy producers, hoping that they would come up with sustainable solutions that could possibly work as a substitute for oil. With companies perfecting a new technique in making silicon wafers that will reportedly cut future solar power costs by 20 percent, most of those that switched to alternative markets have directed their attention toward solar energy.

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