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Personnel Competence Greenhouse Gas Inventory Quantifier (GHG-IQ) Certification

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Assesses professionals responsible for corporate or facility-based GHG inventory development, quantification and reporting.

Greenhouse Gas Inventory Quantifier Personnel Certification (GHG-IQ)

Click here to learn how to submit your application for CSA Group Personnel Certification Programs.

Applicable Industries

  • Environmental Engineering
  • Auditing
  • Accounting
  • Manufacturing
  • Commercial Services
  • Government
  • Facilities Management
  • Oil and Gas
  • Forestry

Program Highlights

Passing the GHG-IQ examination will indicate that the candidate possesses the knowledge, skills and Judgement to work in the role of a quantifier in inventory environments. Certified Greenhouse Gas Inventory Quantifiers will be periodically re-assessed to ensure they remain up-to-date on technical developments and industry changes. Personnel Certification programs are administered through CSA Group. The CSA Group website will contain a registry of certified Greenhouse Gas Inventory Quantifiers.

GHG-IQ Resources


None. However, it is recommended that a candidate have one year experience in inventory quantification.

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To become a Certified Greenhouse Gas Inventory Quantifier an applicant must:

1. Submit a signed application form including all required information
2. Sign and adhere to the professional code of ethics
3. Submit all required fees
4. Pass a written exam

Each applicant is granted a six month eligibility period in which to pass the examination. During the eligibility period, an applicant may take the examination up to three times.


CSA Group's Certified Greenhouse Gas Inventory Quantifier (GHG-IQ) certification is valid for a period of 3 years. Certified Greenhouse Gas Inventory Quantifiers are required to submit all required fees during the certification period.



The Greenhouse Gas Inventory Quantifier (GHG-IQ) certification is the first certification in North America to assess professionals in the field of GHG inventory development and calculation, and is designed for international applicability.

A GHG Inventory Quantifier uses a basic understanding of GHG protocols and climate change science to compile and calculate organizational level and facility level GHG inventories; understands and applies approved quantification protocols; performs site visits or examines energy or process flow diagrams to identify emission or removal sources; identifies and applies quantification methods for quantifying direct emissions, indirect emissions from electricity, heat or steam and other indirect emissions; uses organizational documents to define the organization's GHG inventory boundaries; recognizes the difference between physical, chemical and biological emission sources and sinks in order to identify and quantify emissions and removals and prepares GHG assertions suitable for verification.


A Greenhouse Gas Inventory quantifier can perform GHG IQ activities including:

  • Understanding the principles of direct and indirect emissions sources.
  • Creating spreadsheets or use similar organizational-specific tools to create a GHG inventory.
  • Effectively communicating (both verbally and in writing) information requirements and outcomes to organizational staff.
  • Using analytical methods to check data quality for the purposes of producing a verifiable GHG assertion.
  • Synthesizing data and populate spreadsheets or other tools for the purpose of managing the data.
  • Preparing GHG inventory reports of various types for review.
  • Identifying emission sources and sinks by conducting site visits or analyzing process flow diagrams.
  • Knowing what items to ask for and know to document missing items.
  • Designing and plan a basic GHG inventory.
  • Differentiating between stationary combustion process and fugitive emissions.
  • Defining organizational boundaries, based on operational control or equity share methodologies.

Minimum Candidate Qualifications

The qualified candidate is able to design and plan a basic inventory process; evaluate and apply quantification methods for the purpose of compiling a Greenhouse Gas inventory; articulate protocol – specifications or recommendations for the management of GHG information; evaluate various sources of information to help identify the organizational, geographic, temporal and operational GHG inventory boundaries of the business; determine an appropriate method to calculate emissions by evaluating the information; identify the requirements of appropriate protocol(s) as selected by the organization; use basic math skills and knowledge of statistics (e.g., error checking and sampling procedures) to perform emissions calculations and quality assurance and quality control checks. Furthermore, the qualified candidate has general knowledge of GHG accounting and reporting fundamentals, climate change science principles, and generally accepted protocols, standards and methodologies (e.g., GHGP, ISO, IPCC).

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GST REG No R119441681
QST REG No R1006017360