Saw that show. I found the part about the blades to be fascinating.
I owned stock in Vesta wind systems for a few years. I doubled my money and sold it. I am glad I did.
It is amazing the damage a million tiny pieces of salt/sand can do. I guess it is like a sand blaster. The damage to the leading edge of those blades was incredible. That was in the North Sea. What about in the deserts of California where there is a lot more sand blowing in the air?