The Small Wind Certification Council (SWCC), an independent certification body, certifies that small wind turbines meet or exceed the requirements of

http://www.smallwindcertification.org/

http://homepower.com/basics/wind/

The Small Wind Certification Council (SWCC), an independent
certification body, certifies that small wind turbines meet or exceed
the requirements of the AWEA Small Wind Turbine Performance and Safety
Standard.

This certification provides a common North American standard for
reporting turbine energy and sound performance, and helps small wind
technology gain mainstream acceptance.