Momentary market penetration does not reflect how "competitive" it is. Change in market share does, however -- and wind's market share is increasing.

In addition, in some regions where there is both a good wind resource and a long history of wind power, like Denmark and Northern Germany, wind's share is up to 40%. It's double-digits in the entirety of both Spain and Portugal, too.

_{*Lunatic*, n.
One whose delusions are out of fashion.}