| YEP | | KRGT Rec Pool Physical Fixed Price Spot | Natural Gas | IEPA | |
| YES | | KRGT Rec Pool Physical Gas Daily Monthly | Natural Gas | IEPA | |
| YER | | KRGT Rec Pool Physical Gas Daily Spot | Natural Gas | IEPA | |
| YEH | | KRGT-Rec Pool Physical Inside Ferc | Natural Gas | IEPA | |
| YQJ | | Leidy-Transco Physical Basis LD1 | Natural Gas | IEPA | |
| YQE | | Leidy-Transco Physical Fixed Price Spot | Natural Gas | IEPA | |
| YQH | | Leidy-Transco Physical Gas Daily Monthly | Natural Gas | IEPA | |
| YQG | | Leidy-Transco Physical Gas Daily Spot | Natural Gas | IEPA | |
| YQI | | Leidy-Transco Physical Inside FERC | Natural Gas | IEPA | |
| YQF | | Leidy-Transco Physical Price Monthly | Natural Gas | IEPA | |
| XGI | | Malin Physical Basis LD1 | Natural Gas | IEPA | |
| XGJ | | Malin Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XGN | | Malin Physical Fixed Price Spot | Natural Gas | IEPA | |
| XGK | | Malin Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XGO | | Malin Physical Gas Daily Spot | Natural Gas | IEPA | |
| XGL | | Malin Physical Natural Gas Intelligence | Natural Gas | IEPA | |
| | Mead 230 Physical Off-Peak (bilateral) | Electricity | IEPA | |
| | Mead 230 Physical Peak (bilateral) | Electricity | IEPA | |
| | Mich Hub Day Ahead Financial Peak (bilateral) | Electricity | IEPA | |
| | Mich Hub Real Time Financial Off-Peak (bilateral) | Electricity | IEPA | |
| | Mich Hub Real Time Financial Peak (bilateral) | Electricity | IEPA | |
| XKD | | Michcon Physical Basis LD1 | Natural Gas | IEPA | |
| XKA | | Michcon Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XJZ | | Michcon Physical Fixed Price Spot | Natural Gas | IEPA | |
| XKC | | Michcon Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XKB | | Michcon Physical Gas Daily Spot | Natural Gas | IEPA | |
| XKE | | Michcon Physical Inside FERC | Natural Gas | IEPA | |
| | Mid-C Physical Off-Peak (bilateral) | Electricity | IEPA | |
| | Mid-C Physical Peak (bilateral) | Electricity | IEPA | |
| | Midpoint Physical Off-Peak (bilateral) | Electricity | IEPA | |
| | Midpoint Physical Peak (bilateral) | Electricity | IEPA | |
| YBA | | Millennium East Pool Physical Basis LD1 | Natural Gas | IEPA | |
| YAZ | | Millennium East Pool Physical Fixed Price Monthly | Natural Gas | IEPA | |
| YAY | | Millennium East Pool Physical Fixed Price Spot | Natural Gas | IEPA | |
| YBC | | Millennium East Pool Physical Gas Daily Monthly | Natural Gas | IEPA | |
| YBB | | Millennium East Pool Physical Gas Daily Spot | Natural Gas | IEPA | |
| YBD | | Millennium East Pool Physical Inside FERC | Natural Gas | IEPA | |
| | Minn Hub Day Ahead Financial Off-Peak (bilateral) | Electricity | IEPA | |
| | Minn Hub Day Ahead Financial Peak (bilateral) | Electricity | IEPA | |
| | Minn Hub Real Time Financial Off-Peak (bilateral) | Electricity | IEPA | |
| | Minn Hub Real Time Financial Peak (bilateral) | Electricity | IEPA | |
| | Mona Physical Off-Peak (bilateral) | Electricity | IEPA | |
| | Mona Physical Peak (bilateral) | Electricity | IEPA | |
| XDX | | Moss Bluff Inter Physical Basis LD1 | Natural Gas | IEPA | |
| XDR | | Moss Bluff Inter Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XDS | | Moss Bluff Inter Physical Fixed Price Spot | Natural Gas | IEPA | |
| | Natural Gas Firm Physical, NYMEX LD1 | Natural Gas | IEPA | |
| | Natural Gasoline, Fixed Price | Natural Gas Liquids | IEPA | |
| XUZ | | NBPL Ventura Physical Basis LD1 | Natural Gas | IEPA | |
| XUW | | NBPL Ventura Physical Fixed Price Monthly | Natural Gas | IEPA | |