On behalf of the U.S. Department of Energy (DOE), the National Renewable Energy Laboratory (NREL) is seeking volunteers to participate on the Guidelines for Home Energy Professionals (HEP) Retrofit Installer (RIT) and Crew Leader (CL) Job Task Analysis (JTA) and Scheme Committee for the continuation of these certification programs. NREL is interested in single-family home performance professionals who have the experience and vision to help define and promote a national certification for the current workforce.