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EL BONILLO, SPAIN - DECEMBER 02: Photovoltaic power panels stand at Abaste's El Bonillo Solar Plant while wind turbines spin at a wind farm on the background on December 2, 2015 in El Bonillo, Albacete province, Spain. Spain in 2008 was a leading country on photovoltaic power and renewable energies but after some law changes the solar power industry collapsed, with companies either closing or turning to overseas markets. The UN Climate Change Summit is taking place in Paris over two weeks, in an attempt to agree on an international deal to curb greenhouse gas emissions. (Photo by Pablo Blazquez Dominguez/Getty Images)

EL BONILLO, SPAIN - DECEMBER 02:  Photovoltaic power panels stand at Abaste's El Bonillo Solar Plant while wind turbines spin at a wind farm on the background on December 2, 2015 in El Bonillo, Albacete province, Spain. Spain in 2008 was a leading country on photovoltaic power and renewable energies but after some law changes the solar power industry collapsed, with companies either closing or turning to overseas markets. The UN Climate Change Summit is taking place in Paris over two weeks, in an attempt to agree on an international deal to curb greenhouse gas emissions.  (Photo by Pablo Blazquez Dominguez/Getty Images)

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Solar field

Solar field

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Spanish solar power station with workers

Spanish solar power station with workers

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EL BONILLO, SPAIN - DECEMBER 02: Photovoltaic power panels stand at Abaste's El Bonillo Solar Plant on December 2, 2015 in El Bonillo, Albacete province, Spain. Spain in 2008 was a leading country on photovoltaic power and renewable energies but after some law changes the solar power industry collapsed, with companies either closing or turning to overseas markets. The UN Climate Change Summit is taking place in Paris over two weeks, in an attempt to agree on an international deal to curb greenhouse gas emissions. (Photo by Pablo Blazquez Dominguez/Getty Images)

EL BONILLO, SPAIN - DECEMBER 02:  Photovoltaic power panels stand at Abaste's El Bonillo Solar Plant on December 2, 2015 in El Bonillo, Albacete province, Spain. Spain in 2008 was a leading country on photovoltaic power and renewable energies but after some law changes the solar power industry collapsed, with companies either closing or turning to overseas markets. The UN Climate Change Summit is taking place in Paris over two weeks, in an attempt to agree on an international deal to curb greenhouse gas emissions.  (Photo by Pablo Blazquez Dominguez/Getty Images)

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Large urban solar pannel

Large urban solar pannel