American Carbon Registry

American Carbon Registry

Governing Organization

Environmental Resources Trust, Inc.

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Auditing / Certification Body

Environmental Resources Trust, Inc.

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Assessment Type

Third party assessed by non-verified bodies

Sectors Covered

Various Sectors

Issues Covered

Carbon, CSR, Energy Efficiency, Environmental Management, Water Related


The American Carbon Registry (ACR) publishes standards, methodologies, protocols and tools for greenhouse gas (GHG) accounting, which are all based on International Standards Organization (ISO) 14064 and sound scientific practice. ACR only registers project-based carbon offset tons that are real, additional, permanent and verifiable and comply with American Carbon Registry Standards.  The non-profit American Carbon Registry(ACR), an enterprise of Winrock International, is a leading voluntary offset program with strong standards for environmental integrity and transparency.  Founded in 1996 as the GHG Registry by Environmental Resources Trust, ACR has over fifteen years of experience in development of rigorous, science-based carbon offset standards and methodologies as well as operational experience in high quality carbon offset issuance, serialization and transparent on-line transaction and retirement reporting.  As the first private voluntary GHG registry in the U.S., ACR has set the bar for transparency and integrity that is the market standard today and continues to lead carbon market innovation.

Sustainability Issues

Popular Searches

The market guide to Fairtrade certified products features the latest facts and figures from Fairtrade International (FLO) as well as news and updates on Fairtrade labelling and related market trends. The guide also features descriptions of and links to other ethical trade organizations such as Fair Trade USA, EQUITRADE, FairWertung and the Ethical Trading Initiative.  Fairtrade Foundation UK is a FLO member organisation.  (For reference, readers may also refer to FLO's official statement on Transfair USA’s withdrawal from the FLO network.) messaging