Skip Ribbon Commands
Skip to main content

Skip Navigation LinksHydrogen-Production-Emissions-Calculator

CER branding swish

Hydrogen Production Emissions Calculator

Suggested Reading Suggested Reading

22 March 2023

The Hydrogen Production Emissions Calculator is a tool that enables users to estimate greenhouse gas emissions generated by the production of hydrogen via three pathways based on user input data and information:

  • Electrolysis
  • Coal gasification with Carbon Capture and Storage (CCS)
  • Steam Methane Reforming (SMR) of natural gas with CCS.

The calculator has been created in partnership with GHD to support participation in the Guarantee of Origin trials. Further refinements and improvements may occur to its design to maintain compatibility with government policy.

Downloads available:

  • The calculator is available as an Excel spreadsheet.
  • The user guide provides step-by-step instructions and relevant background information on how to use the calculator.
  • The Proposed Calculations explanatory document provides guidance on how the calculations are performed, including definitions of the data to be inputted and explanation of the sources and methodologies for emissions factors.

Instructions for downloading

Please read the disclaimer and scroll to the bottom of the page to download the files.


The Hydrogen Production Emissions Calculator (the Calculator) has been developed for participants in the Clean Energy Regulator’s (CER) Guarantee of Origin (GO) Trial (Trial) to assist in the estimation of greenhouse gas emissions from a hydrogen production process. The Calculator is consistent with the calculations presented in the International Partnership for Hydrogen and Fuel Cells in the Economy (IPHE) Methodology for Determining the Greenhouse Gas Emissions Associated with the Production of Hydrogen Working Paper (Version 1, October 2021) (IPHE Working Paper), and should be used in conjunction with the supporting Hydrogen Production greenhouse gas emissions accounting calculations (the Proposed Calculations) document, these two documents along with the calculator user guide are collectively referred to as the Supporting Documentation.

Users of the Calculator should be aware that any and all requirements, calculations, methods, and Supporting Documentation are subject to change during development of the Guarantee of Origin Scheme (the Scheme), which may affect the accuracy of the outputs of the Calculator.

Users use this Calculator at their own risk. The CER and GHD Pty Ltd (GHD) bear no responsibility and disclaims all liability for the data input to the Calculator by users, or for the outputs of the Calculator, and will in no event be liable for any direct, incidental, or consequential loss or damage of any kind, arising out of or in connection with, any use of the Calculator or reliance on the Calculator’s output. In particular, users agree that the CER and GHD will not be liable for any loss or damage suffered by users or any third party as a result of their acting on information they obtained through the Calculator. There is no link between any data entered into this Calculator and any GO certificates that may be issued once the Scheme is operational.

Neither the CER or GHD makes any representation or warranty regarding the accuracy, precision and completeness of the assumed default values, or calculations, included with this Calculator. Assumed default values and calculations are indicative only and may change over time without being updated in this Calculator or Supporting Documentation. The CER and GHD do not warrant that any results, estimates, or outputs generated by the Calculator will be accurate, precise, complete, or up to date.

The information to be input in the Calculator is not exhaustive of all matters which will be required to be reported under a future Guarantee of Origin Scheme, nor does the Calculator cover all circumstances applicable to all entities. The Calculator is not intended to comprehensively deal with its subject area; nor is it a substitute for independent legal advice.

The Calculator is not permitted to be modified or re-published without explicit permission by the CER.

The Clean Energy Regulator and GHD Pty Ltd do not guarantee uninterrupted access to the Calculator or that the associated website and files obtained from or through this website are free from harmful code including viruses or spyware, and recommend the use of appropriate software to consider and use the Calculator and to protect your systems.

By clicking 'Download Calculator' you agree to the disclaimer.

Additional files

documentasset: User guide for hydrogen production emissions calculator

documentasset: Proposed calculations for hydrogen production emissions calculator

Documents on this page Documents on this page

Was this page useful?

preload-image-only preload-image-only preload-image-only preload-image-only preload-image-only preload-image-only preload-image-only preload-image-only preload-image-only