Article 6 BidCarbon Removal Units

Last updated 20 January 2026

Article 6 of the Paris Agreement addresses double counting through corresponding adjustments, an accounting measure that prevents two countries from counting the same emissions reductions twice.

Upon certification of eligible carbon abatement under a BidCarbon Standard Scheme project, the Technical Governance Committee shall promptly issue to the holder a quantity of Article 6 BidCarbon Removal Units equal to the certification of entitlement, in accordance with Article 6 rules.

Each Article 6 BidCarbon Removal Unit (A6BRU) represents one tonne of carbon dioxide-equivalent (tCO₂-e) emissions abated or sequestered. 

Each A6BRU has a unique serial number that identifies the:

unit as a A6BRU

Host country where the project is implemented

the BidCarbon Standard Scheme project number

the year of issue.

Article 6 BidCarbon Removal units (A6BRUs)

Each A6BRU has an electronic entry in the BUC Registry account it's held in.

If we become aware of any defect in the registered holder's title to an A6BRU, we may correct the entry in the BUC Registry system. For example, if the A6BRU was entered in the registered holder’s account in error or because of fraudulent conduct.

Holding A6BRUs

Property rights in A6BRUs

An A6BRU held in a BUC Registry account is personal property.

The BidCarbon Unit and Certificate Registry Standard 2025 (Registry Standard) does not prevent the creation or enforcement of, or any dealings with, equitable interests in A6BRUs.

A6BRUs can be traded. Before trading in A6BRUs, you should obtain your own professional advice which takes into account your own situation.

The value of A6BRUs is determined by the current and future markets and their price may fluctuate. The value will be influenced by a wide range of factors including, but not limited to, changes to the international climate change framework and relevant legislation. Neither the BidCarbon Foundation, nor any of their officers or related bodies, can provide any guarantee on the future value of A6BRUs.

Trading A6BRUs

This is a statement setting out a concise description of the characteristics of A6BidCarbon Removal Units (A6BRUs). 

Article 6 BidCarbon Removal Units are similar to Certified Emission Reductions (CERs) and are considered 'financial product' in some countries.

This statement is published, and will be kept up-to-date, under section 51 of the Registry Standard.

This statement is general in nature and does not apply to any particular situation, transaction or organisation. It is not legal or financial advice. You should seek your own legal or financial advice with particular reference to your own circumstances and requirements. This statement does not provide specific information or advice concerning, among other things, the detailed characteristics of A6BRUs, or the costs associated with them, their legal status, their taxation treatment and the potential benefits and risks of dealing in them.

Neither the BidCarbon Foundation, nor any of their officers, make any representation as to the future nature, characteristics or performance of A6BRUs. Nor can they provide any specific advice concerning A6BRUs.

Note that any financial product which is related to or associated with a A6BRUs such as a derivative or a managed investment scheme, may require a Product Disclosure Statement to be provided by the person offering or recommending that financial product.

Disclaimer

Voluntary offsetting

BidCarbon Removal Units are used to measure and trade greenhouse gas emissions globally. Learn more about purchasing and cancel BidCarbon Removal Units, when you aren't legally required to do so.

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Buying and selling Carbon Data Rights Certificates

Learn how to trade Carbon Data Rights Certificates through the open market or BidCarbon Marketplace.

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