Here is a post on where Wind Power estimated to be 150 gigawatt by 2020 going to be.
U.S. Wind Poised to Hit 150GW by 2020
Written by Craig Rubens
Posted August 15th, 2008 at 12:00 am in Big Green
The booming U.S. wind market is set to cross the 150 gigawatt mark by 2020, according to a report from market research firm Emerging Energy Research (EER). That includes 5.33 GW installed last year, and another 8 GW currently under construction and planned for completion by the end of this year, EER says. But it will take actually double that 2020 projection — a total of 300 gigawatts — if we want to get 20 percent of our electricity from wind like the DOE and T. Boone Pickens think we can.
This graph shows the US power companies.