About Us

The American Carbon Registry (ACR) is a leading voluntary offset program with strong standards for environmental integrity and over a decade of operational experience in high quality carbon offset issuance, serialization and transparent on-line transaction 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. ACR has issued over 30 million project based carbon offsets and in 2008 was the most widely used voluntary carbon market registry in the world.

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