The Institute of Sustainability and Environmental Professionals (ISEP), in collaboration with the Carbon Accounting Alliance, have launched the new Register of Carbon Accountants and Auditors, a groundbreaking initiative that allows professionals like you to showcase your expertise in carbon accounting and auditing.
Applications to join the Register are currently open at Technical Associate Carbon Accountant (TACA) level only and are available exclusively to individuals who have successfully completed an ISEP-approved training course.
We are actively developing application routes for the remaining levels of the Register, and this page will be updated as further opportunities to join become available.
The Register will provide a clear, credible way for individuals and organisations to demonstrate their qualifications and experience in carbon accounting to clients, regulatory bodies, and voluntary reporting schemes. Whether you’re an individual professional or part of a consultancy, registration will give you the tools to show that you meet the industry’s rigorous standards for managing carbon data effectively and ethically.
The main goal of the Register is to promote effective carbon accounting practices by establishing high-quality standards based on the knowledge and experience of professionals in the field. By becoming a registered carbon accountant or auditor, you’ll not only enhance your professional credibility but also contribute to building trust and transparency in carbon reporting.
The Register will also provide a defined career pathway, offering opportunities for growth and recognition as the demand for skilled carbon accountants continues to rise.
We’ve proposed three distinct grades for carbon accountants: Technical Associate (TACA), Registered Practitioner (RPCA), and Principal (PCA). Each grade comes with its own set of competencies, tailored to the level of expertise required. There is also a standalone grade of Auditor, which is currently under development.
The Carbon Accountants and Auditing Register will be part of ISEP’s Specialist Registers portfolio, managed by the Professional Standards team and administered day-to-day by ISEP’s Membership and Standards team. This ensures that the Register maintains the highest level of quality and professionalism.
The entry level of the Register, recognising professionals who have completed the relevant training and can demonstrate foundational knowledge of carbon accounting principles and practice. TACA holders support carbon measurement, reporting, and data management activities under appropriate supervision.
The application route for this level is currently open only to candidates who have completed the ISEP Certified course. If you have successfully completed the Technical Associate Carbon Accountant Certificate course, and you have an existing ISEP membership at Affiliate level, or above, you can download the application pack below.
If you do not have ISEP membership, please complete the online application process for ISEP Affiliate membership (or above) first. Once you hold ISEP membership, you can commence your application to join the Register of Carbon Accountants and Auditors.
Further application routes for this level of registration are in development.
A practitioner-level designation for professionals applying carbon accounting in practice. RPCA recognises the ability to manage carbon data, apply relevant standards and methodologies, and contribute directly to organisational greenhouse gas reporting, analysis, and assurance activities.
The application route for this level of registration is currently under development. Details of eligibility and application requirements will be published here once available.
The senior level of the Register, recognising experienced professionals with advanced technical expertise and leadership in carbon accounting and auditing. PCA holders lead complex engagements, provide technical oversight, and contribute to the development of best practice in the field.
The application route for this level of registration is currently under development. Details of eligibility and application requirements will be published here once available
You can download the framework of competencies for all Levels on the Register of Carbon Accountants and Auditors here.
Note: The competencies for the Auditors are not yet live.
Yes, you will need to hold ISEP Affiliate membership or above, to be enrolled onto the register.
Joining the register is not linear…. You can join at a level that suits your current knowledge and experience.
You will be able to progress through the levels when you have gathered the knowledge and case studies to demonstrate that your competencies meet the requirements of the next level.
The renewal process will be in line with that for our other professional registers. You can manage this via your MyISEP portal.
Applications to join the Register are currently open at Technical Associate Carbon Accountant (TACA) level only and are available exclusively to those who have successfully completed the ISEP-approved the Technical Associate Carbon Accountant Certificate course.
We are actively developing application routes for the remaining levels of the Register, and this page will be updated as further opportunities to join become available.
To join the register at Technical Associate level, you can complete a formal 5-day ISEP Certified training course. To find out more about the Technical Associate Carbon Accountant Certificate course, click here.
The costs to join the register are detailed on our fees page.
Get in touch via THIS FORM if you have any other questions and would like to be kept updated on the development of the register.