Mechatronics, as a whole, is an excellent field to pursue. Can't speak much as to the wind turbine industry, but from what I understand as I currently pursue internships/jobs as my college career comes to a close, you should be able to be easily placed in industry somewhere.
As far as wind energy goes, there are very few credible arguments that can say that renewable energy is not the future. Offshore and land based wind farms are being researched in many locations and, barring any massive breakthroughs in other renewable energy sources, the is great room for industry expansion in wind turbines.
Courage les garçons, et patience, vos femmes vont finir par apprécier la bière !