They determine the amount of energy lost through lack of insulation or wasteful processes, then recommend methods to save energy.
Technicians assist engineers in designing, building, and operating laboratory experiments.
They also work with systems and devices used to change fuels or other resources into useful energy. However, certification is offered by the National Institute for Certification in Engineering Technologies as a mark of competence in the field and may be beneficial in obtaining employment. Security clearance is necessary for employment in nuclear power plants and other places deemed as high-security by the government.