Some of you people are making statements and not looking at the needs here, he has to pump 170m that's 557 ft, not 300 that is at the maximum depth for any rod pumping windmill, and at the depth the flow will be minimal at best. It just won't cut the needs.
You're looking at 450 homes x 7 people in each for a total of 3150 people. How many gallons do you use in a day? A flow rate of 2 gpm ain't gonna cut it.
Yes this is old easily sustainable technology, however have you ever built one? Or worked on one? They are complicated. I doubt you could build one from scratch the first time, make it reliable and even get 1/2 the capacity needed.
63,000 litres/day is 43.75 litres per minute, or 11.55 gallons per minute. That's every minute, constant for 24 hrs straight, no letup in your wind.
It's just in the past 10 years or so that dc well pumps have been able to pump a decent volume of water at this depth. Usually the solution would've been an a/c well pump to get this kind of volume.
I also agree that the excess electricity can be used by other sources if there's an excess generated.
With electric windmills he can build more than needed to sustain constant operation and store excess for when the wind isn't blowing. It's also scalable, a failure in one part of the system won't shut the whole operation down.