The American Carbon Registry requires independent third-party verification for all offset projects and corporate inventories. Beginning in October 2010, the Registry will require that all verifiers be ANSI certified. In the interim, applicants can select from the Registry’s list of approved verifiers, below, or from verifiers who are approved under CDM, JI, VCS and CCAR.
 

Approved Verifiers

• Battelle Memorial Institute
• Consot SRL – Servisios de Consultoria
• Environmental Services Inc (ESI)
• First Environment, Inc.
• ICF International
• Landfills +, Inc.
• Ruby Canyon Engineering
• Scientific Certification Systems
  
• URS Corporation

In addition to the list above, the ACR presumptively approves the following verifiers:

• Designated Operational Entities approved under Clean Development Mechanism
• Accredited Independent Entities approved under Joint Implementation
• Approved verifiers under the Voluntary Carbon Standard Association
• Approved verifiers under the California Climate Action Registry