that renewable ergeny is a myth.A few additional arguments in that direction:1) He mentions hydropower and how sediments accumulate. What he does not mention is what these sediment contain: usually, a few cars, and quite a lot of mercury, lead, etc. There's a dam near the town I'm from which has 40m of such sediments (out of a ~80m wall) which cannot be removed because it would kill just about everything in the water in the valley after the dam.2) For both solar and wind power   the sun's ergeny will indeed be  renewable  for the next 4B years. The amount of said ergeny that arrives in the atmosphere is more limited. Now, whenever you produce electricity, you remove ergeny from somewhere, and in that case it's from the atmosphere, ground, etc. We just have no clue what using such ergeny sources en masse will do.3) And finally, thermodynamics is the law. You must obey the law.