Wind turbines wear out and break as do solar panels - especially the cheap crap coming from China - Nothing ‘renewable’ about this boondoggle (not to mention the highly toxic materials used to manufacture them). If the wind is blowing and the sun is shining long enough, some places can benefit from these sources. Certainly never above 10% of the total energy production as many of the EU countries are now realizing when they mandated a higher percent. The blight on the landscape is horrible, as the footprint is huge just to avoid cheaper more plentiful sources that are far more reliable. Nothing is going to be pollution free, not even the burning cow dung we are going to be left with if the Watermelons have their way.