| ARM Energy Management, LLC | PR-149 |
| Basin Electric Power Cooperative | PR-152 |
| BP Energy Company | PR-104 |
| Citigroup Energy Inc | PR-150 |
| Commercial Energy of Montana, Inc. | PR-145 |
| Concord Energy LLC | PR-112 |
| CHS Inc. | PR-120 |
| CIMA ENERGY, LP | PR-143 |
| Dakota Gasification Company | PR-153 |
| Devlar Energy Marketing, LLC | PR-137 |
| DXT Commodities North America Inc | PR-154 |
| Koch Energy Services, LLC | PR-151 |
| Macquarie Energy LLC | PR-131 |
| Montana-Dakota Utilities Co. | PR-100 |
| Nesson Gathering System, LLC | PR-142 |
| Nielson Energy, Inc. | PR-117 |
| NJR Energy Services Company | PR-147 |
| Phillips 66 Company | PR-119 |
| Rainbow Gas Company | PR-101 |
| Sequent Energy Management LLC | PR-133 |
| Tenaska Gas Storage, LLC | PR-146 |
| Tenaska Marketing Ventures | PR-110 |
| Tharaldson Ethanol Plant I, LLC | PR-140 |
| Twin Eagle Resource Management, LLC | PR-107 |
| United Energy Trading, LLC | PR-138 |