Approved Tracking Systems in States With an RPS
To submit and receive approval for a tracking attestation, facilities located in a state that has a renewable portfolio standard (RPS) or goal must be registered in a state-approved tracking system. This table contains the approved tracking systems in each RPS state. If your facility is not registered in the state-approved system and you plan to provide supply to a Green-e® Energy certified seller, please contact Green-e® staff directly at verification@green-e.org.
| State | Tracking System |
| Arizona | WREGIS |
| California | WREGIS |
| Colorado | WREGIS |
| Connecticut | NE-GIS |
| District of Columbia | PJM-GATS |
| Delaware | PJM-GATS |
| Hawaii | N/A |
| Iowa | M-RETS |
| Illinois | M-RETS or PJM-GATS |
| Indiana | M-RETS or PJM-GATS |
| Kansas | NAR |
| Maine | NE-GIS |
| Maryland | PJM-GATS |
| Massachusetts | NE-GIS |
| Michigan | MIRECS |
| Minnesota | M-RETS |
| Missouri | NAR |
| Montana | WREGIS and M-RETS |
| Nevada | WREGIS and NVTREC |
| New Hampshire | NE-GIS |
| New Jersey | PJM-GATS |
| New Mexico | WREGIS |
| New York | NYGATS |
| North Carolina | NC-RETS |
| North Dakota | M-RETS |
| Ohio | PJM-GATS or M-RETS |
| Oregon | WREGIS |
| Pennsylvania | PJM-GATS |
| Rhode Island | NE-GIS |
| South Dakota | MRETS and WREGIS |
| Texas | ERCOT (if located in TRE) |
| Utah | WREGIS |
| Vermont | NE-GIS |
| Virginia | PJM-GATS |
| Washington | WREGIS |
| Wisconsin | M-RETS |