The SeaTwirl Floating Vertical Wind Turbine

SeaTwirl Turbine Could be the Most Cost-Effective Wind Energy Generator Yet | Inhabitat - Green Design Will Save the World
http://inhabitat.com/new-seatwirl-design-to-be-the-most-cost-effective-wind-turbine-yet

• Swedish eco-designers, Ehrnberg Solutions AB, have just completed their most successful prototype of the floating SeaTwirl vertical wind turbine. The device captures and harvests offshore wind, without having to convert the energy as it is being stored. SeaTwirl is the first of its kind with only two moving parts, and it uses only sea water as a roller bearing, omitting the need for a gearbox or transmission.

SeaTwirl - YouTube
http://www.youtube.com/watch?v=-U6WxckCptM&feature=player_embedded

SeaTwirl

http://seatwirl.com

• A successful test installation has been carried out in the sea near Halmstad on the Swedish west coast. Intense weeks of building, launching and tests at sea have now been completed and the technology has proven to work excellent! Read more about the SeaTwirl prototype III.
  The development, construction and installation of the prototype is made in cooperation and with support of the following companies, organisations and institutions: Chalmers University of technology, Habasit AB, Ingeniörsfirman Myrén & Co. AB, Mekpart AB, Miltronic AB, Halmstad Hamn AB, Rexnord Industries, SP Technical Research Institute of Sweden, University of Gothenburg.

SeaTwirl Prototype III - Sea Trial - YouTube
http://www.youtube.com/watch?v=1ZKNxQNYtLk&feature=player_embedded