Thanks for your comments, Fred. Just like you I also base my analysis on numbers provided by experts in their fields of geology, physics and energy. The thing you have highlighted - namely that resources are limitless given enough solar power - proves that even numbers can be interpreted rather differently. What I read from the data is: that we need fossil fuels to produce solar panels (for high heat, and energy density needed for mining), plus we create a lot of mess while digging the Earth for those rare elements. In other words it is impossible to replace fossil fuels on a global scale with solar due to completely objective manufacturing and geological reasons - not to mention the ecology. One side of me refuses to understand, why this isn't christal clear to anyone else, and why this is a basis of debate (still), but my other part says: it is OK this way, maybe I missed something important and the other person is correct. The world is simply too complex for our chimpanzee brain to grasp - everyone sees just a tiny fraction of the truth out there.