BPI Building Analyst

Pass the BPI Exam and Become a Certified Energy Auditor the first time! Green Credential is dedicated to providing exam preparation materials Read More about “”

BPI Envelope Professional

The BPI Envelope Professional (EP) certification was established to recognize a level of training and an in-depth Read More about “”

NABCEP Entry Level

Green Credential’s study guide for the NABCEP Entry Level certificate of Knowledge (COK) is the best and most focused study guide out there Read More about “”

Practice Exams

Quick Review Packages: Our Practice Exams give our are best study materials at a low price, to start you on your journey of studying. Read More about “”

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.