Your roof (TGW) - Quiet Revolution, a London based small wind turbine maker, has raised $12.5 million in funding for its 6 kilowatt triple helix wind turbine, the ‘qr5’.



The qr5 uses three S-shaped blades which are designed to work in urban environments where wind speeds are lower and change frequently.



The turbine is just 15 feet high and 9 feet wide. 30 have already been sold and 45 are in the process of being installed.





However, the turbine isn’t cheap at a nice £25,000, plus installation costs of £3,000 to £6,000 per turbine, turbine controls that cost £4,600, and the cost of the mast, £2,950 - £5,150



The company is working on a smaller qr2.5 which would be 7.5 feet high and would generate 3000 to 4500 kwh as well as a qr12 would be 36 feet high and would generate 45,000 and 55,000kWh on a decent wind site.



Quiet Revolution is targeting schools and businesses for its products.



Via :: Press Release (PDF) :: Earth2Tech