It credited the Federal Production Tax Credit for drving as much as $20 billion per year in private investment.
Denise Bode, chief executive of the American Wind Energy Association (AWEA), said: "This is what a successful business looks like with stable tax policy.
"Utilities are locking in a great deal for their electric customers while it’s available. We’re keeping rates down all across the US, even in the heart of the South."
She said that the results indicated the year would finish strongly, somewhere between the industry’s high point of 2009 and the recent dip in 2010 amid turmoil in federal tax policy.
But she warned that growth could stall if Congress allows the Production Tax Credit to expire.
She said she would ask lawmakers: "Do you want to be the one to say that we just shut down a new manufacturing sector, and an industry that could support 500,000 jobs in less than 20 years, just as it was getting a foothold in the U.S. market?"