Home | Join the Movement — Enhance Carbon Reporting

Bringing carbon accountants together for collective impact

Who we are

We bring together carbon accounting professionals who measure and report carbon emissions, which includes software companies, consultancies, auditors, in-house sustainability managers, standards bodies and independent professionals. We collaborate on solving challenges faced by our industry, share best practice and promote the development of robust standards.

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The alliance in numbers

2,000+ Members

More than 2,000 professionals have joined, based in 65+ countries.*

200K+ Companies Measured

Our Members have collectively measured carbon footprints for over 200,000 organisations.*

>1.1BN tCO2e Measured

We have collectively measured** more than 1 billion tonnes of CO2e with our clients.*

>29.1m tCO2e Reduced

We have measured** 29+ million tonnes of direct CO2e reductions achieved (no offsets).*

*These figures are estimates based on information provided by CAA Members. Not all have shared figures for every measure and reporting periods and boundaries vary.
**Currently only includes 45 CAA members

Some of our members

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View Full Member Directory

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Member-Only Community Platform

If you, or your organisation, are already a CAA Member, then you can access our exclusive Community Platform for Members to access all of our resources, discussions, working groups and events. If you are not yet a Member, please apply first.

Access our Community Platform

Apply to join the CAA