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## Renewable Energy Certificates (RECs) National REC Tracking Systems Currently, nine regional renewable energy certifica te (REC) tracking systems operate in different regions of North America, with a set of c ommon purposes. REC tracking systems provide a basis for creating, managing, and retirin g RECs, ensuring that each REC is counted only once. 1 Tracking systems are also the vehicle through whic h load-serving entities (LSEs) demonstrate compliance with state renewable energy and related environmental policies, including renewable portfolio standards (RPS). 2 

### Current Regional North American REC Tracking Systems, or Registries

Links Environmental Tracking Network of North America Inter - registry transfer capability 

### Publications Environmental Tracking Network of North America (ETNNA), 2010. The Intersection Between Carbon, RECs, and Tracking: Accounting and Tracking the Carbon Attributes of Renewable Energy . White Paper, February. ( PDF 406 KB ) Environmental Tracking Network of North America (ETNNA), 2009. System Changes to Serve a Federal RES . June. ( PDF 164 KB ) Environmental Tracking Network of North Tracking System Primary Region(s) Launch Date Texas Renewable Energy Credit Program , run by the Electric Reliability Council of Texas (ERCOT) Texas January 2002 NEPOOL - Generation Information System (GIS) New England July 2002
PJM - Generation Attribute Tracking System (PJMGATS) Delaware, Indiana, Illinois, Kentucky, Maryland, Michigan, New Jersey, North Carolina, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia and the District of Columbia Sept 2005
Western Renewable Energy Generation Information System (WREGIS) Alberta, Arizona, British Columbia, California, Colorado, Idaho, Montana, Nebraska, Nevada, New Mexico, Oregon, Texas, Utah, Washington, and Wyoming June 2007
Midwest Renewable Energy Tracking System (M-RETS) Illinois, Iowa, Manitoba, Minnesota, Montana, North Dakota, South Dakota, and Wisconsin July 2007 North American Renewables Registry(NARR) States and provinces not covered by the regional markets February 2009 Michigan Renewable Energy Certification System (MIRECS) Michigan October 2009 Nevada Tracks Renewable Energy Credits(NVTREC) Nevada 2007/2008 North Carolina Renewable Energy Tracking System (NC-RETS) North Carolina 2010

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# Page 1 of 2 Green Power Network: Renewable Energy Certificates (RECs)

5/29/2014 http://apps3.eere.energy.gov/greenpower/markets/certificates.shtml?page=3America (ETNNA), 2009. Inter- registry REC Transfers . June. ( PDF 146 KB ) Footnotes 1 From www.apx.com . 2 A renewable portfolio standard requires an electricity s upplier to include a required minimum percentage of electricity produced by renewable sources in its mix o f electricity supplied to retail customers. Printable Version

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# Page 2 of 2 Green Power Network: Renewable Energy Certificates (RECs)

5/29/2014 http://apps3.eere.energy.gov/greenpower/markets/certificates.shtml?page=3