Green Tech power is the result of converting sunlight into electricity. Sunlight can be converted directly into electricity using photovoltaics (PV), or indirectly with concentrating green power (CSP), which normally focuses the sun’s energy to boil water which is then used to provide power. The green power gained from photovoltaics can be used to eliminate the need for purchased electricity (usually electricity gained from burning fossil fuels) or, if energy gained from photovoltaics exceeds the home’s requirements, the extra electricity can be sold back to the home’s supplier of energy, typically for credit.  Read more... (473 words, estimated 1:54 mins reading time)