There are no proof windmills produce electricity. There are however plenty of evidence that they produce wind.

Think about it.
>metrologists aka. brainwashed guessers believe in the religion of global warming
>they work for the Jews, lamestream media and the marxist commies to promote windmills
>predict "wind"
>windmills spins allegedly producing electricity
So covenant right?

The truth is the windmills produce wind to make the meteorlogists look like they "predicted" the weather.

Just another scam by the globohomo and all the NPCs fall for it.