May 2014 saw the market launch of the Liam F1. A lot of publicity surrounded the roll out of this new wind turbine. It weighs just around 55 kilograms (120 pounds) and it measures 1.5 meters (5 feet) in diameter. 
The idea would be to ultimately put it in large numbers on roofs and on top of street lights. Individual consumers would be able to bring down their electricity bills significantly. However, with some simple high school math and physics it is easily checked that the claims are exaggerated.
