Solar energy is very cost effective. The power of solar energy comes from the sun. The sun is free and inexhaustible. Besides, the solar energy is the positive effect of the environment. There is no noise, a little pollution, and no greenhouse gases. Although it cannot be utilized at night or on cloudy days, its availability may be during the daytime or sunny day. However, it is not only can help us to increase the value of our home and its resale price, but also spend less money on power bills, so that solar energy will most likely be more widely used in the near future than others energy sources.
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