To advance quality of both installations and the training process, standards and certification systems for clean energy technologies are rapidly evolving. 

Certification of solar photovoltaic and solar thermal installers is managed by the North American Board of Certified Energy Practitioners, www.nabcep.org.

A small wind installation certification will soon be available through NABCEP, as well as a certification for solar technical sales including site assessment.

Geothermal drillers, installers and designers are trained and certified through the International Ground Source Heat Pump Association, http://www.igshpa.okstate.edu.