Just a couple quick notes: (1) Even with all the sustainable energy additions to our energy mix over the last 10 years (solar, wind, etc)...as noted in the article....the worlds percentage of energy produced by sustainable energy sources has DECREASED OVER THE LAST 10 years because the increase in energy demand has increased at a fast rate than the addition of new sustainable energy sources, (2) looks like sustainable energy sources have "bottomed out" over the past year and are heading UP over coming years (FSLR, GE, SPWR, ENPH, etc, etc, etc).
The need for more and more renewable energy is just starting. Once people figure out that fracking is poisoning the planet.....once China figures out just how poisonous their country has become....the "push" for clean energy will become a shove.