When energy executives begin to examine the wind industry, the first thing they are often struck by is its raw size.
The wind energy business is no longer a fringe activity for environmentalists. It has become a multibillion-dollar behemoth, providing huge amounts of electricity to some of the world's largest economies.
In the heart of the traditional oil patch in Texas, wind power has become a major player. But much of the recent rush in wind has been led by public policy and only occasionally pushed along by unfiltered economics.