Flat on a Flat roof

[Earthstore]

I have seen this type of system, but not convinced about it myself, although I do understand how they should work.
How would it cope with gusty winds that change direction?
What would happen if we had a repeat of the wind in 1987?

 

[andyyoyo]

Thanks, will have to follow this up next week, am off to work in france- where I believe they might just still be getting their 43 cents per kw...