To begin, you'll have to decide what area of energy efficiency you would like to specialize in. Different titles and job descriptions fall under “energy efficiency.” For instance a certified energy auditor uses tools and techniques to assess buildings for energy efficiency.
Find an accredited energy efficiency training program. Not all programs for energy efficiency are accredited. However accreditation suggests that the course is credible and approved by professionals within your field. For instance, a certified energy auditor would undergo training from a RESNET (Residential Energy Services Network) accredited training provider. Professional organizations also sometimes offer certifications. The Association of Professional Lighting Engineers offers the Certified Lighting Efficiency Professional (CLEP) Program to qualified professionals.
You'll have to pay the necessary fees to complete the program. Fees may include the class fee, learning materials, and test proctoring. Classes and test proctoring will range in price depending on your area of study, and can cost anywhere from $150 to $600. Because students are often working professionals, schools often offer classes on an online distance learning basis.
Certification is awarded on successful program completion. Depending on the program, students may be asked to schedule a time to take their final exam or have to take it on a specific time and date. Once certified, a professional can state their certification on their resume, business cards or other professional documents.