Friday, 21 August 2015

Green Illusions. The hidden environment costs of solar energy.

           Solar cells do not offset greenhouse gases or curb fossil  fuel use according to a recent environment book by University of Nebraska Press written by Dr Ozzie Zehner of University of California.   It reveals how the solar industry has grown to become one of the leading emitters of hexafluoroethane(C2F6), nitrogen trifluoride (NF3) and sulphur hexafluoride(SF6).  These three potent greenhouse gases are used by solar cell fabricators.  
          Hexafluoroethane hasa  global warming potential that is 12000 times higher than CO2 according to the Intergovernmental Panel on Climate Change.  It is 100 percent manufactured by humans and survives 10000 years once released into the atmosphere.  By contrast carbon dioxide which we humans breathe out stays in the atmosphere for at most five years.  Nitrogen trifluoride is 17000 times more virulent than carbon dioxide and SF6 the most treacherous greenhouse gas is over 23000 times more threatening.
        The solar photovoltaic industry is one of the fastest growing emitters of these gases, which are now accumulating alarmingly in the earth atmosphere according to the US National Oceanic and Atmospheric Administration (NOAA).  A NOAA study shows that atmosphere concentrations of SF6 have been rising exponentially.   Clearly the solar cell industry should be abandoned.

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