| Company Name Sort ascending | Description | Membership Type |
|---|---|---|
| Zachry Group | Associate Member | |
| Yokogawa | Associate Member | |
| WorleyParsons | Associate Member | |
| Wood Mackenzie | Wood Mackenzie is a leading research and consulting business which provides comprehensive knowledge about the worlds energy and metals industries. We analyze and advise on the assets, markets and companies operating upstream and downstream; in oil, gas, coal, carbon, metals and power generation. In the global downstream oil sector we support both existing players and new entrants to identify and exploit new refining and marketing opportunities as well as enhance existing business performance |
Associate Member |
| Wood | Associate Member | |
| Westlake Chemical Corporation | Regular Member | |
| Waid Environmental | Associate Member | |
| W. R. Grace & Co. | Regular Member | |
| Vopak Americas | Associate Member | |
| Versalis S.p.A. | International Manufacturing Member | |
| Veolia North America | Associate Member | |
| Vapor Point | Vapor Emissions Control |
Associate Member |
| Valero Energy Corporation | Regular Member | |
| Universal Plant Services, Inc. | Associate Member | |
| Univar USA Inc. | Associate Member | |
| United Rentals, Inc. | Equipment rentals, sales, services and contractor supplies. |
Associate Member |
| U.S. EPA/HQ | Regular Member | |
| U.S. Department of Labor | Regular Member | |
| U.S. Department of Homeland Security | Regular Member | |
| U.S. Department of Energy | Regular Member |