Jump to main content or area navigation.

Contact Us

Fuels and Fuel Additives

Renewable Fuels: EPA Moderated Transaction System (EMTS)

picture of corn

EPA has developed a new system to manage Renewable Identification Number (RIN) transactions under the Renewable Fuel Standard. The EPA Moderated Transaction System (EMTS) was released for official use on July 1, 2010. These web pages are intended to provide industry users and the public with information about EMTS.

On this site, you will find:

  • Meetings/Presentations: Video recordings of EMTS demonstrations, meetings, and presentations.
  • Tutorials: Interactive, step-by-step EMTS training.
  • Documents: Documentation related to using EMTS.
  • Frequent Questions: Answers to frequently asked questions about EMTS.
  • Conversion Tool: Tool to convert files to XML.
  • System Diagrams: Diagrams explaining how EMTS interacts with other OTAQ systems such as CDX.

IMPORTANT REMINDER: Regulated parties are urged to conduct due diligence investigations and exercise caution when conducting RIN transactions. Neither EPA nor its systems, including the EMTS, certify or validate RINs or make any provision for parties who, despite good faith, transfer or receive invalid RINs. As specified in the regulations at 40 CFR 80.1431(b)(2), invalid RINs cannot be used to achieve compliance with the Renewable Volume Obligations of an obligated party or exporter, regardless of the party's good faith belief that the RINs were valid at the time they were acquired. Additionally, the regulations at 40 CFR 80.1460(b)(2) prohibit the creation or transfer to any person of a RIN that is invalid.

Information on criminal enforcement of the RFS program, including issuance of notices of violation, is available from EPA's Office of Enforcement and Compliance Assurance.

If you have questions or request information, please contact the appropriate support or help line found on the Support & Help page.

Please visit EPA's Transportation and Air Quality web-based repository of mobile source documents, Document Index System (DIS). This searchable repository contains regulations, Federal Register notices, policy letters, and guidance documents.

Please visit our Related Links page for other fuel related information within EPA, other U.S. Agencies, and other fuel related websites.

This page is maintained by EPA's Office of Transportation and Air Quality (OTAQ).
For more: About Us | Get E-mail Updates | Browse the A to Z Subject Index.

Jump to main content.