I see that the link is working now, and I did sort of answer this question if you take a look.

I think one of the problems with asking a question like this is that of scale. You can take a look anywhere on the web to get an idea of the energy extracted from the atmosphere by a single turbine or a large farm. Here are a couple of ideas of the energy available in the atmosphere.

If we were to look at the energy released by rainfall in a 65km radius with a rainfall rate of 1.5cm per day we get get a rate of 6 x 10exp12 watts. This is about twice the total world electrciity generation capacity.

A storm with a radius of about 60km will dissipate about 0.2 x 10exp12 watts via the wind.

The energy generated by rainfall is from the release of latent heat and the energy dissipated from the wind is from the kinetic energy released through friction.

The thing to do is to look at these numbers and compare them with the energies involved in a wind farm and realise that what we, as human beings, are doing is really very small and unlikely to make any observable impact on local weather.

The numbers that I have used were quickly worked in my head and so use a single place of decimals and a simple value for pi.