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## Renewable Ener g y Certificates (RECs ) National REC Tracking Systems Currently, nine regional renewable energy certificate (REC) tracking systems operate in different regions of North America, with a setof common purposes. REC tracking systems provide a basis for creating, managing, and retiri ng RECs, ensuring that each REC is counted only once . 1 Tracking systems are also the vehicle through which 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

Link s Environmental Tracking Network of North A meric a Inte r - registry transfer capability 

### Publication s Environmental Tracking Network of North A merica (ETNNA), 2010. The Intersection B etween Carbon, RECs, and Tracking: A ccounting and Tracking the Carbon Attributes of R enewable Energ y . White Paper, February. ( PDF 4 06 K B ) Environmental Tracking Network of North A merica (ETNNA), 2009. System Changes to S erve 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: Renewabl e Energy Certificates (RECs)

6 / 6 /201 4 htt p ://app s3.eere.energy . g ov/ greenp ower/markets/certificates.shtml? p ag e= 3A merica (ETNNA), 2009. Inter-registry REC Transfers . June. ( PDF 146 KB ) Footnote s 1 From www.apx.com . 2 A renewable portfolio standard requires an electricity supplier to include a required minimum percentage o f electricity produced by renewable sources in it s mix of electricity supplied to retail customers. Printable Versio n
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Content Last Updated: 10/02/2013 

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

6 / 6 /201 4 htt p ://app s3.eere.energy . g ov/ greenp ower/markets/certificates.shtml? p ag e= 3