Welcome to Green Credential!

Welcome to Green Credential  your FREE online Green Building and Clean Tech Resource!  Here, you can find everything you need to help you earn your NABCEP or BPI credential –Building Analyst or Envelope professional. You can check out our study guides and practice exams, to help you succeed. We are dedicated to helping you direct you to maximize your exam preparation time. If you don’t know what to do, or you feel kind of lost, please click a link below so I can figure out the best way to help you.

Green Credential is proud to present professional study guides for the BPI BA/EP practice exams and NABCEP Entry Level Exam.

Scroll Down and click on the links to see all of our Study Packages:


The BPI Building Analyst (BA) Ultimate Practice Exam Package The BPI Envelope Professional (EP) Ultimate Practice Exam Package

Click above to check out our exam BPI packages


NABCEP Entry-Level exam Study Guide



Parker Williams and the Green Credential Team