| DORTMUND LIMITED | Private company limited by shares | Dissolved |
| DORTMUND ENERGY CO., LIMITED | Private company limited by shares | Dissolved |
| DORTMUND NEW ENERGY CO., LIMITED | Private company limited by shares | Live |
| DORTMUND SOLAR ENERGY CO., LIMITED | Private company limited by shares | Live |
| DORTMUND ENERGY INVESTMENT GROUP CO., LIMITED | Private company limited by shares | Live |
| GERMANY DORTMUND EXHIBITION GROUP COMPANY LIMITED | Private company limited by shares | Dissolved |
| GERMANY DORTMUND HEAT ENERGY TECHNOLOGY LIMITED | Private company limited by shares | Live |