Not enough to base energy policy on.
[Update a few minutes later]
A vigorous fisking of what Judith Curry calls “the stupidest [peer-reviewed] paper ever written.” With all respect to Professor Curry, that’s a pretty high bar, even in this field.
[Update a couple minutes later]
OK, I slightly misquoted her.
— Judith Curry (@curryja) November 29, 2017
[Update a while later]
Link is fixed, sorry!