| XNQ | | Consumers Physical Basis LD1 | Natural Gas | IEPA | |
| XNM | | Consumers Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XNL | | Consumers Physical Fixed Price Spot | Natural Gas | IEPA | |
| XNO | | Consumers Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XNN | | Consumers Physical Gas Daily Spot | Natural Gas | IEPA | |
| XNP | | Consumers Physical Inside FERC | Natural Gas | IEPA | |
| YD9 | | Cove Point Physical Basis LD1 | Natural Gas | IEPA | |
| YD7 | | Cove Point Physical Fixed Price Daily | Natural Gas | IEPA | |
| YD8 | | Cove Point Physical Fixed Price Monthly | Natural Gas | IEPA | |
| YD6 | | Cove Point Physical Gas Daily Monthly | Natural Gas | IEPA | |
| YD5 | | Cove Point Physical Gas Daily Spot | Natural Gas | IEPA | |
| XX3 | | Eastern Gas-North Physical Basis LD1 | Natural Gas | IEPA | |
| XBI | | Eastern Gas-North Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XAX | | Eastern Gas-North Physical Fixed Price Spot | Natural Gas | IEPA | |
| XSF | | Eastern Gas-North Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XOR | | Eastern Gas-North Physical Gas Daily Spot | Natural Gas | IEPA | |
| XSG | | Eastern Gas-North Physical Inside FERC | Natural Gas | IEPA | |
| XJP | | Eastern Gas-South Physical Basis LD1 | Natural Gas | IEPA | |
| XJM | | Eastern Gas-South Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XJL | | Eastern Gas-South Physical Fixed Price Spot | Natural Gas | IEPA | |
| XJO | | Eastern Gas-South Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XJN | | Eastern Gas-South Physical Gas Daily Spot | Natural Gas | IEPA | |
| XJQ | | Eastern Gas-South Physical Inside FERC | Natural Gas | IEPA | |
| XXN | | EGT Flex Physical Basis LD1 | Natural Gas | IEPA | |
| XXK | | EGT Flex Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XXJ | | EGT Flex Physical Fixed Price Spot | Natural Gas | IEPA | |
| XXM | | EGT Flex Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XXL | | EGT Flex Physical Gas Daily Spot | Natural Gas | IEPA | |
| XXO | | EGT Flex Physical Inside FERC | Natural Gas | IEPA | |
| XSX | | EP Keystone Physical Basis LD1 | Natural Gas | IEPA | |
| XSU | | EP Keystone Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XST | | EP Keystone Physical Fixed Price Spot | Natural Gas | IEPA | |
| XSW | | EP Keystone Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XSV | | EP Keystone Physical Gas Daily Spot | Natural Gas | IEPA | |
| XSY | | EP Keystone Physical Inside FERC | Natural Gas | IEPA | |
| XVK | | EP SJ Blanco Pool Physical Basis LD1 | Natural Gas | IEPA | |
| XVH | | EP SJ Blanco Pool Physical Fixed Price Monthly | Natural Gas | IEPA | |
| XVG | | EP SJ Blanco Pool Physical Fixed Price Spot | Natural Gas | IEPA | |
| XVJ | | EP SJ Blanco Pool Physical Gas Daily Monthly | Natural Gas | IEPA | |
| XVI | | EP SJ Blanco Pool Physical Gas Daily Spot | Natural Gas | IEPA | |
| XVL | | EP SJ Blanco Pool Physical Inside FERC | Natural Gas | IEPA | |
| XOZ | | ERCOT Ancillary Services Non-Spin ATC Daily Fixed Price | Electricity | IEPA | |
| XQU | | ERCOT Ancillary Services Non-Spin ATC Fixed Price | Electricity | IEPA | |
| XT0 | | ERCOT Ancillary Services Regulation Down ATC Daily Fixed Price | Electricity | IEPA | |
| XT1 | | ERCOT Ancillary Services Regulation Down ATC Fixed Price | Electricity | IEPA | |
| XT2 | | ERCOT Ancillary Services Regulation Up ATC Daily Fixed Price | Electricity | IEPA | |
| XT3 | | ERCOT Ancillary Services Regulation Up ATC Fixed Price | Electricity | IEPA | |
| XT4 | | ERCOT Ancillary Services Responsive Reserve Service ATC Daily Fixed Price | Electricity | IEPA | |
| XT5 | | ERCOT Ancillary Services Responsive Reserve Service ATC Fixed Price | Electricity | IEPA | |
| YFQ | | ERCOT Houston 345kV Hub HE 0700-2200, 7x | Electricity | IEPA | |