There are a number of errors in this column, so I'm not going to try to go into them all. A few in particular:
Backup generation is kept running at all times on our utility system, not so much because of wind, but because large traditional power plants often suffer unexpected outages within a few seconds and must be instantly replaced. Wind generally changes slowly, and its changes can be forecast in advance. It adds very little to existing system backup needs.
The cost of wind power has been falling. A January 2012 study from the Lawrence Berkeley National Laboratory shows that it costs between 24 and 39 percent less to produce wind energy on a per-kilowatt-hour basis today than it did in 2002-2003.--Tom@AWEA