| Company | Booth | |
| S.T. Cotter Turbine Services, Inc | 808 | |
| Sargent & Lundy LLC | 0 | |
| Siemens | 839 | |
| Simmers Crane Design & Services | 111 | |
| Slingmax Rigging Solutions | 223 | |
| Sohre Turbomachinery Inc | 435 | |
| Southern Environmental | 522 | |
| SSS Clutch Company Inc | 646 | |
| Sterling | 102 | |
| Sunbelt Rentals Inc | 201 | |
| Superheat FGH Services | 351 | |
| Supra | 729 | |
| Syntech Towers | 811 | |
