Solar/wind farms are great when you have the land suitable for those. My favourite example is replacing the U.S. farms growing corn that is used to produce ethanol (which is then added to the gas) with solar farms. This would produce more energy while not disrupting any ecosystems (at least not more than the existing farms).

So either Spain has no land like that, or the Spanish government has fucked something up. Judging by the rest of your post, I‘m leaning towards the latter :-)