Not a bad analysis and as the author states and I agree 100% there is on average a 3 to 1 disadvantage to Solar/Wind power. Or another way of looking at it is the name plate rating should be reduced by 3. so a 3 mg name plate turbine is really only a 1 meg wind turbine. and that means the capital cost is at minimum 3 times that of conventional systems and there are not good economy of scale factors so even that is an understatement.