| ENGIE ELECTRICAL & COMMUNICATIONS PTY LIMITED | Former Name (Historical) | ASIC |
| DESA AUSTRALIA PTY LIMITED | Former Name (Historical) | ASIC |
| DATA AND ELECTRICAL SERVICES AUSTRALIA PTY. LIMITED | Former Name (Historical) | ASIC |
| GARZMAR PTY. LTD. | Former Name (Historical) | ASIC |
| EQUANS ELECTRICAL AND COMMUNICATIONS PTY LIMITED | Main Name (Current) | ABR |
| ENGIE ELECTRICAL & COMMUNICATIONS PTY LIMITED | Main Name (Historical) | ABR |
| DESA AUSTRALIA PTY LIMITED | Main Name (Historical) | ABR |
| DESA Australia | Business Name (Current) | ABR |
| DATA AND ELECTRICAL SERVICES (AUSTRALIA) | Business Name (Current) | ABR |
| EQUANS Electrical & Communications | Business Name (Historical) | ABR |
| ENGIE DESA | Business Name (Historical) | ABR |
| ENGIE Services - DESA | Business Name (Historical) | ABR |
| INFORMATION STORAGE DEPOT | Business Name (Historical) | ABR |