Frequently Asked Questions

About the Registry

What is M-RETS®?
The Midwest Renewable Energy Tracking System (M-RETS®) tracks renewable energy generation and assists in verifying compliance with mandatory or voluntary State/Provincial Renewable Portfolio Standards (RPS) and objectives. M-RETS® is an important tool to keep track of all relevant information about renewable energy produced and delivered. Currently the states & provinces participating for the compliance markets are: Illinois, Iowa, Manitoba, Minnesota, Montana, North Dakota, South Dakota, Missouri, Kentucky, Arkansas, Mississippi, Louisiana, Texas and Wisconsin. M-RETS will track generation for voluntary renewable energy claims in any state or province in North America as shown below.   . 
How does M-RETS® work?

M-RETS® creates a renewable energy certificate for every MWh of renewable energy produced in the region, tracks the life cycle of each renewable certificate created, and ensures against any double-counting or double-use of each certificate.  To learn more see Why Use M-RETS®.

How is the M-RETS® system unique?

M-RETS® is an easy to use, web-based system that creates, verifies, manages and enables trading for Renewable Energy Certificates (RECs). The system provides a full suite of capabilities to create unique certificates, track serial numbers, track certificates in company accounts, enable transfers and transactions, track certificate retirement, and enable compliance reporting with a full audit trail.

How do we participate?

See the Registration page.

How do I get more information about M-RETS®?

Please contact the M-RETS®  Administrator Here

How can I see the public reports?

The Public Reports are available here.

How do I find out whether my renewable generation will be eligible in M-RETS® areas?

The best way is to reach out to the the Executive Director or contact the respective State Agencies and/or commissions in each participating State/Province and review their eligibility requirements. Information on each State/Provincial programs and their respective contacts can be found under the Useful Links page.

Can M-RETS® export RECs to other tracking systems?

M-RETS® permits RECs to be exported to MIRECSNAR and NC-RETS. A full list of tracking systems that facilitate inter-registry transfers can be accessed here. The procedure to export RECs is available in Section 4.6.5 of the M-RETS® Operating Procedures. If you have questions about exporting RECs from your account, please contact the M-RETS Administrator – Sean Darling: systemadmin(at)

Does M-RETS® permit REC imports from other tracking systems?

M-RETS now accepts Imports from the following registries:

Our new system has an integrated support platform. Access the full help platform here