| Administrador del Mercado Mayorista | GUATEMALA | Guatemala |
| Adroit Technologies | Johannesburg | South Africa |
| Arga Controls, Inc. | Monrovia | United States |
| BC Hydro | Burnaby | Canada |
| Beckwith Electric Co. Inc. | Largo | United States |
| Emerson Process Management | Watertown | United States |
| C3ilex, LLC | Fremont | United States |
| Central Maine Power Company | Augusta | United States |
| City Utilities of Springfield | Springfield | United States |
| Country Energy | Dubbo | Australia |
| CSE-Servelec Ltd | Sheffield | United Kingdom |
| Dairyland Power Cooperative | La Crosse | United States |
| DNP | Calgary | Canada |
| EDF Energy | Ipswich | United Kingdom |
| EFACEC ENGENHARIA, S. A. | Moreira Maia | Portugal |
| Energex | Fortitude Valley | Australia |
| EnerNex Corporation | Knoxville | United States |
| FortisBC | Kelowna | Canada |
| Infratek Finland Oy | VANTAA | Finland |
| Georgia Power | Bogart | United States |
| Great River Energy | Elk River | United States |
| H&L Instruments | North Hampton | United States |
| Hsiang Cheng Electric Corp. | Hsin-Tien City | Taiwan |
| Hydro Tasmania Consulting | Cambridge | Australia |
| IOServer Pty Limited | Sydney | Australia |