The largest photovoltaic facility in the world installed on the rooftops of a factory began operating in September 2008. An area of 320,000 m2, similar to 42 football fields, was covered with 84,848 panels with a photovoltaic capture area of 189,000 m2. The panels generate energy equivalent to the consumption of 4,600 households. The investment cost was €61 million. After …