As the years go by it is finally becoming known what is going on here. The best of the verticals (I call them "verticals") such as the Darrieuses and H-Rotors can have at most only 2/3rds of the power production per square meter swept area of the horizontals (I call them "horizontals"). This comes from that dreaded word - theory. More than this, the verticals are "blessed" with the problem that their blades must fight much more parasitic drag on them while running at all points on their circuits but especially when traveling up wind, requiring unusual care in their design and something never called out for attention and addressed by even the experts at Sandia - whom I know and to whom I have mentioned my opinions on this subject. Time, though, cures all ills and some of this may become accepted dogma one day.

The verticals have their merits in other respects and God go with you if you wish to continue with one for your ranch after having read this.

Meanwhile some perfectly sound and acceptable horizontal axis turbines such as after market, refurbished 30 to 65 kw Nordtanks and 101 kw Micons and 40 kw Aeromans and even the lattice tower Windmatics are available for land owner projects like this. Good, consistent winds are helpful not just winds that come and go. Visit the IntegEner-Wind website to see the four Nordtanks installed right near the center crossroads of our town here and running to everyone's satisfaction. Again, you will be happy that this was said and I can even lend further ideas here, not just more sales propaganda.

(My own entrepreneur, remote, small battery power wind rotators may be not in the same league but they have a lot of thought behind them and appeal to official bodies with funds available.)