you always wish to do better in saving the environment and Planet Earth. One of your conservation ideas is to install a solar cell rooftop at home _ to convert energy from the sun into electricity for your...
According to Citi Research, the average price of solar modules in the global market has dropped significantly, from US$74.48 per watt in 1972 to US$0.97 at the end of last year, and it is expected to fall...