Electricity demand is down.
Natural gas is cheap and plentiful.
A tax credit that makes wind energy competitive is set to expire next year.
These are the headwinds being talked about at the nation's largest wind energy event, the 2011 Wind Power Convention.
It's being held in Anaheim, and the last time wind executives gathered like this in energy-hungry California, there were 5,200 exhibitors. This time there are more than 20,000.