The concept sounds fine.  Who hired the grade-schools dropouts who claimed they had engineering degrees to design and implement this scheme?  It should have been clear long before installation what the variance in wind velocity would be and how many calm days there would be.  Knowing the variance, it would be easy to determine if the local grid could accept the power on a really windy day.  Finally a reservoir only 5% of required size is inexcusable.  Looks like not a single solitary person actually ran the numbers before spending 65M euros.  Clearly a green politician with dreams of re-election was in charge.  Sound familiar?  I am skeptical enough of 'green power schemes" - I do live in Ontario after all - but this makes the Ontario Liberals and their green buddies look like geniuses, and we know they are dumb as a bag of hammers.