Geographic Diversification of Wind Power Has No Bearing on its Variability

Last Wednesday I stirred up a hornets nest with an article titled "A Reality Check for Wind Power Investors" (link at the bottom of this article) that included two graphs from the Bonneville Power Administration, or BPA, which manages a four state, 300,000 square mile service region that's home to over 40% of the installed hydro capacity and roughly 12% of the installed wind capacity in the US.