It'd be interesting, then to know which proportion of the electricity consumed by the region corresponds to the wind energy produced in the region. Utilities will do press release, which is fair game - but if in the end their "80% wind" was a one-of, and has to be compensated by the "50% coal, 45% gas" of someone else to keep the lights on...

We have pretty much the same situation in Europe with Denmark, some parts of Spain, etc... Which still don't help with a big Germany or Poland in the middle.

Grids aren't easy !