There has been several attemps to create a real VAWT.
I have been looking and reading everything about them since 2000.
This was perhaps the best attempt;
http://www.turby.nl/They had first a very big big site, to introduce the product and the test results.
Now they have only this site.
I have once tried to order Pacwind Delta VAWT to my test. I phoned and send several... E mails etc.
They never answered to any of my calls or E mails. That was really fortunate, because now I have read
several cases about it..
Etc.
THIS is a law of physics;
To create for example the same true wind power of 2kw 3,8m HAWT, VAWT needs to be 2m dia and 6m height= 12m2.
How to manage the storm sitution, which HAWT survives with tail etc
My adwice; forget here and now the VAWT, its a waste of time and ..
VAWT is for special circumtancies, for example we have here in Finland;
http://www.cypresswind.com/ They develope this for emergency power in very high telephone masts to telephone companies, they do not sell this to any other customers.
Other one here in Finland, which I have been in contact several times. For very special.. circumstancies too;
http://www.windside.com/index.htmlAntero