Small Wind Turbines for the Urban Landscape

Ever wondered if you could put a wind turbine on the roof of your building?  Well, in fact, a vertical axis turbine will let you do just that.  A new company, Urban Green Energy, will begin to sell a 1 kW vertical axis turbine next month, according to cnet.  Though Urban Green Energy’s turbine isn’t the first – and won’t be the last – vertical axis turbine, it is designed to perform particularly well in areas where wind directions can frequently change.  In other words, city-dwellers with average wind speeds of 10mph can produce energy for less than 10 cents/ kWh.