• Welcome to ACG
    the leading association of certified
    independent commissioning authorities.
    Click here for more info
    ACG's CxA certification is now ANSI accredited
    and DOE-recognized!
  • ACG Building Systems Commissioning Guideline
    Available Now.
  • Save the Date for the #1 event in
    Visit Website
    commissioning and energy management
    CxEnergy 2023 Conference & Expo
    May 2-5, Dallas/Ft. Worth, TX

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Membership & Certification


Find Certified CxAs

Find an independent certified commissioning authority near you


Apply for CxA Certification

Join the largest pool of certified commissioning providers in the world


Maintain Your CxA Certification

Submit your continuing education units


CxEnergy Conference

#1 event in building commissioning and energy management

# of certified individuals
# of member companies
# international companies

Core Values


All members must be independent of general and installing contractors, manufacturers of equipment or system components, or other entities that could affect the ability of the member to render an independent commissioning report.



To sit for the certification exam, applicants must have a thorough knowledge and understanding of the commissioning process, and demonstrate their ability to provide professional commissioning services in accordance with the ACG Commissioning Guideline.

Training and Education

ACG is committed to providing training and education for its members and the industry. In addition to developing technical guidelines and certification programs, the association sponsors workshops and conferences focused on commissioning. Click here to see upcoming CxA educational opportunities.

Subscribe to our YouTube Channel where you will find over 100 video presentations from experts in our industry speaking on important building commissioning and energy management topics.

CxA Workshop In-Person is a 2-day 12-hour CxA Workshop which includes a discussion of the commissioning process as described in the ACG Commissioning Guideline, as well as valuable practical insight on skills, strategies, and communication and documentation protocols essential to applying the process on “real world” projects.

The Authorities in Certification

A nationwide network of independent TAB agencies providing integrity and expertise in vital measurement & verification.

A non-profit association dedicated to the advancement of independent third-party commissioning professionals.

Energy Management Association, which is dedicated to advancing the quality of energy management services for the benefit of the building owner. EMA provides comprehensive training and education for energy management professionals, building owners, and other industry professionals.