... is when the "Electricity Superhighway" additions to bring High Plains wind power to market have been made, since the Time of Day profile for the High Plains and the Great Lakes are quite different from each other, so adding the Great Lakes to the Dakota, Kansas and Texas Panhandle resources ought to provide a valuable reduction in the Time of Day variance of the system.

I've been accused of being a Marxist, yet while Harpo's my favourite, it's Groucho I'm always quoting. Odd, that.