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CARB Compliance Offset Protocols


This training is required to become a California Air Resources Board (CARB)-Accredited Verifiers for the Cap-and-Trade Regulation Compliance Offset Program. To become an accredited verifier, individuals must complete Course 1 and the methodology-specific courses (3-6) corresponding to their desired scope of project types. Course 2 is intended for registry staff only.

Under CARB oversight, third-party verification provides a systematic and documented process for the evaluation of reported data and calculations against the regulatory requirements.

Courses offered:

  • Course 1: Verification Requirements
  • Course 2: Offset Project Registry Requirements (forthcoming)
  • Course 3: Livestock Projects (forthcoming)
  • Course 4: Ozone Depleting Substances Projects (forthcoming)
  • Course 5: U.S. Forest Projects (forthcoming)
  • Course 6: Mined Methane Capture Projects (forthcoming)

Upon completion of the selected course(s), CARB will determine if all accreditation requirements have been met and grant accreditations at its discretion.


All trainees must be approved by CARB to participate in the Compliance Offset Program Verifier Accreditation Training. Approved applicants may process their training registration payment below.

If you have not been approved, please email Stephen Shelby ([email protected]) to request approval to enroll in the Verifier Accreditation Training.

Online Training Logistics

GHGMI will administer the Verifier Accreditation Training through its online learning management system with self-paced interactive learning modules and a forum for Q&A that will be monitored by CARB staff relevant to each course. Prospective learners must register for their selected courses during an open-enrollment period (to be publicized here).

There is no time limit for completion of the course.

The remote training platform will track participant progress in completing each of the required course materials.

Registration Deadlines & Fees

Registration fees are as follows:

  • Course 1: $1,600
  • Course 2: $1,300
  • Course 3: $800
  • Course 4: $800
  • Course 5: $1,600
  • Course 6: $1,200

Scholarships, partial payments, or payment plans are not currently available.

Registration fees must be received prior to the end of the open-enrollment period in order to be enrolled. If payment is received following this deadline, enrollment will proceed in the subsequent open-enrollment period. After registering you will receive an email within 2-3 business days that includes a link and login details to access your online training account and course materials.


For questions related to processing your registration or accessing the online training material, you may contact: [email protected]

For all other questions (e.g., related to eligibility or verification content), please contact the following CARB Staff:

  • For questions relating to eligibility, the Compliance Offset Program, verification, offset registries, and ozone-depleting substances projects please contact Stephen Shelby ([email protected]).
  • For questions relating to U.S. Forests projects please contact Alex Yiu ([email protected]).
  • For questions relating to Livestock Projects or Mine Methane Projects please contact Jeffrey Coronado ([email protected]).
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