In addition to the Honeywell home wind turbine a number of other innovative and improved wind turbines were on display at the 2009 Renewable Energy Roundup.
Joe Kaminski of Wilson Energy demonstrated Aquilo Power's vertical windmill.
Abundant Renewable Energy of Newberg, Oregon displayed their super strong power generating windmills.
The Energy Ball windmill from Home Energy Americas LLC, (a division of Sweden's Home Energy) and installed by Round Rock's Casa Bella Verde operates at very low wind speeds. Tests indicate that it's sound is not detectable above background noise. San Antonio company Southwest Clean Energy also sells and installs the Energy Ball.