Monthly Archives: January 2011

Comparison HAWT and double helix-style designs

Q: Could you kindly give a comparison of your system to the double helix system of home wind power generators. I have been hoping to find a system that combines art, color, wild life protection and good efficient engineering design in one package. (submitted by Adelle Jang)

A: The system you mention seems to be a Vertical Axis system. We only have one very small VAWT among our offerings (50 W rated capacity). Reason: VAWT are still mostly in an experimental stage, many horzaontal modesl are already… tested and …proven. Among them this (“Airdolphin” — frankly, our least-favored one in some aspects, because it’s actually VERY efficient engineering, on one hand, comes at a HEFTY MANUFACTURER LIST PRICE on the other)!

Wildlife protection is, actually, not much different between VAWTs and HAWTs: even a small horzontal (propeller-style) turbine is (a) seen by birds and (b) heard by birds and bats and can therfore be avoided. Existing residual casualties among them DO also occur with windows, cars etc, and such residual fatalities cannot be avoided anyway. (Cars and conventional power etc poses a far more significant risk to bird and bat populations than a small turbine when the IMMEDIATE shift toward Green energy is done in due course and not postponed till the point where climate change severely affects animals, plants, and all of us.) Geese have been killed in the LaGuardia/Hudson river plane accident too, but aircraft are still not outlawed.Though I admit that I wouldn’t want to die in a trubine (of any design) the way some animals continue to do, that “wildlife argument” is sort of counter-productive when bearing the big picture in mind, for it means humanity would continue on that rotten energy path of coal, nuclear and oil which has to be left RIGHT NOW.

Art & color are also incorporated into “Airdolphin” with different colors available as a premium feature, see

I apologize for only comparing every of your points (above) to that Airdolphin model. I did this because it comes closest to most of the issues you raised. I am, actually, not overly into only touting our own products and would rather consider a broader approach but I, obviously, do not have so many details at hand for some other products I, quite hoestly, don’t know the first thing about — and it would be dishonest of me to pretend otherwise. We do, however, offer a broader view of thing on where we publish a selection of wider news on the subject (whether or not the items are offered at this time or not). You may want to have a look there, too. We are trying to sell products, but we do so because we are also idealists and enthusiastic about the opportunities for (necessary) change available on this basis.

We are very much in favor of helix-style systems and VAWT in general and we are already working on that subject in order to come up with a feasible VAWT solution in the future. As this may take some time (1.5+ years at the very least), we recommend going for existing models for the time being.

Also, incentives programs (tax breaks, government subsidies or even FITs) are available NOW, and as always with fiscal programs, they can be chnaged anytime, even retrospectively (this would even be constitutional in the fiscal policy field)! So this might be a further incentive of ‘taking the money and run’ (and also let your own system run) as soon as possible — on top of the actual benefit of avoiding new carbon emmissions today and not tomorrow.