On the whole, I agree with AWEA's position on the IER study and the fact that it comes from a biased point of view, as noted in my post.
However, I think that by rebutting the study instead of using it to your advantage, the wind industry misses a good opportunity. The four biggest "winners" in this study are Texas, Oklahoma, Iowa, and North Dakota - why not use the IER findings that the PTC was a net benefit to build supprt for PTC renewal among those states' Members of Congress? The two biggest "losers" were California and New York, and I don't think IER's report will undercut support for clean energy policy in those two states.
Wind energy's positive economic and environmental benefits are clear - why not use this report as a way to define them for skeptical legislators?