North American Board of Certified Energy Practitioners
NABCEP delivers value for thousands of Board Certified Professionals, Associate credential holders, and renewable energy consumers & stakeholders. NABCEP credentials raise standards and promote confidence in the renewable energy sector.
How To Register
Visit your test sponsor’s website for more information about the application process, fees, and eligibility requirements.
Schedule A Test
Scheduling begins when you receive the Notice to Schedule (NTS) email from Castle. Scheduling periods vary from exam to exam, so check the NABCEP Candidate Handbook or Associate Handbook on your test sponsor's website for more information. Login to Castle’s Portal by following the web link in your NTS to schedule your exam site and date; your confirmation email will follow immediately.
Purchase Practice Tests
Please keep in mind, from the time of initial access to your practice test, you will have a 48-hour window to complete your two-hour practice test.
Find A Location
Castle delivers tests for some of the best testing programs in the world. Our mission is to provide you with a safe, secure, comfortable, and convenient testing experience.
We wish you good luck on your exam!
Prepare For Your Tests