Worried, page-152

You are right to look at renewables hH. Over the next 25 years the supply of renewables will be ubiqutous all over the world, the current play school packages will seem a bit like a low power Lego set. Having 4 kids who are engineers and 3 of em Ekectrical, thank god the girls are teachers you can bet I get to chat. Anyway the interesting bit is just how much copper is required. Germany is the leader in renewables and has runs on the board, copper usage goes up, odd old world eh.

But seriously if you want to start a real look go here http://www.copper.org/environment/sustainable-energy/renewables/ and then many other links will keep you up with some interesting stuff. Education the most powerful force.