| XTE | | ANR SE (Louisiana) Physical Basis LD1 | Natural Gas | IEPA | |
| XTB | | ANR SE (Louisiana) Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XTA | | ANR SE (Louisiana) Physical Fixed Price Spot | Natural Gas | IEPA | |
| XTD | | ANR SE (Louisiana) Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XTC | | ANR SE (Louisiana) Physical Gas Daily Spot | Natural Gas | IEPA | |
| XTF | | ANR SE (Louisiana) Physical Inside FERC | Natural Gas | IEPA | |
| XZM | | ANR SW (Oklahoma) Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XZL | | ANR SW (Oklahoma) Physical Fixed Price Spot | Natural Gas | IEPA | |
| XZO | | ANR SW (Oklahoma) Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XZN | | ANR SW (Oklahoma) Physical Gas Daily Spot | Natural Gas | IEPA | |
| XZP | | ANR-SW Physical Basis LD1 | Natural Gas | IEPA | |
| XZQ | | ANR-SW Physical Inside FERC | Natural Gas | IEPA | |
| XX2 | | APC-ACE Gas Daily Monthly | Natural Gas | IEPA | |
| XX0 | | APC-ACE Physical Basis LD1 | Natural Gas | IEPA | |
| XW9 | | APC-ACE Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XW8 | | APC-ACE Physical Fixed Price Spot | Natural Gas | IEPA | |
| XX1 | | APC-ACE Physical Gas Daily Spot | Natural Gas | IEPA | |
| XX4 | | APC-ACE Physical Natural Gas Intelligence | Natural Gas | IEPA | |
| | Borah Physical Off-Peak (bilateral) | Electricity | IEPA | |
| | Borah Physical Peak (bilateral) | Electricity | IEPA | |
| | CAISO COB Day-Ahead Off-Peak (bilateral) | Electricity | IEPA | |
| | CAISO COB Day-Ahead Peak (bilateral) | Electricity | IEPA | |
| | CAISO FC Day-Ahead Off-Peak (bilateral) | Electricity | IEPA | |
| | CAISO FC Day-Ahead Peak (bilateral) | Electricity | IEPA | |
| | CAISO MEAD Day-Ahead Off-Peak (bilateral) | Electricity | IEPA | |
| | CAISO MEAD Day-Ahead Peak (bilateral) | Electricity | IEPA | |
| | CAISO NOB Day-Ahead Off-Peak (bilateral) | Electricity | IEPA | |
| | CAISO NOB Day-Ahead Peak (bilateral) | Electricity | IEPA | |
| | CAISO PV Day-Ahead Off-Peak (bilateral) | Electricity | IEPA | |
| XXK | | CEGT Flex Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XXJ | | CEGT Flex Physical Fixed Price Spot | Natural Gas | IEPA | |
| XXM | | CEGT Flex Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XXL | | CEGT Flex Physical Gas Daily Spot | Natural Gas | IEPA | |
| XLE | | CG Mainline Physical Basis LD1 | Natural Gas | IEPA | |
| XLB | | CG Mainline Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XLA | | CG Mainline Physical Fixed Price Spot | Natural Gas | IEPA | |
| XLD | | CG Mainline Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XLC | | CG Mainline Physical Gas Daily Spot | Natural Gas | IEPA | |
| XLF | | CG Mainline Physical Inside FERC | Natural Gas | IEPA | |
| XLK | | CG Onshore Physical Basis LD1 | Natural Gas | IEPA | |
| XLH | | CG Onshore Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XLG | | CG Onshore Physical Fixed Price Spot | Natural Gas | IEPA | |
| XLJ | | CG Onshore Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XLI | | CG Onshore Physical Gas Daily Spot | Natural Gas | IEPA | |
| XLL | | CG Onshore Physical Inside FERC | Natural Gas | IEPA | |
| XNX | | Cheyenne Physical Basis LD1 | Natural Gas | IEPA | |
| XNT | | Cheyenne Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XNS | | Cheyenne Physical Fixed Price Spot | Natural Gas | IEPA | |
| XNV | | Cheyenne Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XNU | | Cheyenne Physical Gas Daily Spot | Natural Gas | IEPA | |
