The green propeller heads just can’t seem to process the fact that we have no way of storing the AC power. You always need backup conventional power plants ready to go when you have windmills or solar on the grid. Chu is beyond stupid.
It makes you wonder how many times they have to explain to Chu and Obama for that matter that you can’t use giant fans to keep wind turbines turning. Obama is such a failure at Constitutional law, there is no way he’d understand the Law of Conservation of Energy.